Flaircomm Microelectronics BTM501 Bluetooth Module User Manual FLC BTMxxx DS V1 0

Flaircomm Microelectronics,Inc. Bluetooth Module FLC BTMxxx DS V1 0

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Document Author: Flaircomm

FLC-BTM501 Datasheet
FLC-BTM501/FLC-BTMDC751
Datasheet
Document Type:
Bluetooth Module Datasheet
Document Number:
FLC-BTM501-DS
Document Version:
V1.6
Release Date:
2013/12/18
Copyright 2012~ 2014 by Flaircomm Microelectronics Inc., All Right Reserved
Without written permission from Flaircomm Microelectronics Inc., reproduction, transfer, distribution or
storage of part or all of the contents in this document in any form is prohibited
Flaircomm Microelectronics Confidential
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FLC-BTM501 Datasheet
Release Record
Version
Release Date
1.0
1.1
1.2
1.3
1.4
1.5
1.6
2012/06/26
2012/09/06
2012/11/01
2012/11/16
2013/07/26
2013/08/15
2013/12/18
Flaircomm Microelectronics Confidential
Comments
Release
Modify operating temperature.
Modify power consumptions.
Modify Features.
Modify table of Mechanical Characteristic.
Small modifications.
Modify Mechanical Characteristic.
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FLC-BTM501 Datasheet
CONTENTS
1.
1.1
1.2
1.3
1.4
INTRODUCTION ............................................................................................................................................... 6
NAMING DECLARATION ..................................................................................................................................... 6
BLOCK DIAGRAM ............................................................................................................................................... 7
FEATURES .......................................................................................................................................................... 7
APPLICATIONS ................................................................................................................................................... 7
2.
GENERAL SPECIFICATION .......................................................................................................................... 9
3.
PIN DEFINITION ............................................................................................................................................. 10
3.1
3.2
4.
PIN CONFIGURATION ........................................................................................................................................ 10
PIN DEFINITION ................................................................................................................................................ 10
PHYSICAL INTERFACES ............................................................................................................................. 13
4.1
POWER SUPPLY ................................................................................................................................................ 13
4.2
RESET .............................................................................................................................................................. 13
4.3
AUDIO INTERFACES.......................................................................................................................................... 14
4.3.1
ADC ........................................................................................................................................................ 14
4.3.2
ADC Sample Rate Selection and Warping .............................................................................................. 14
4.3.3
ADC Gain................................................................................................................................................ 14
4.3.4
DAC ........................................................................................................................................................ 15
4.3.5
DAC Sample Rate Selection and Warping .............................................................................................. 15
4.3.6
DAC Gain................................................................................................................................................ 15
4.3.7
Mono Operation ...................................................................................................................................... 15
4.3.8
Audio Input Stage .................................................................................................................................... 15
4.3.9
Microphone Input .................................................................................................................................... 15
4.3.10
Audio Output Stage ................................................................................................................................. 15
4.4
RF INTERFACE ................................................................................................................................................. 16
4.5
GENERAL PURPOSE ANALOG IO ...................................................................................................................... 16
4.6
GENERAL PURPOSE DIGITAL IO ....................................................................................................................... 16
4.6.1
Audio Signal Control .............................................................................................................................. 16
4.7
SERIAL INTERFACES ......................................................................................................................................... 17
4.7.1
UART ...................................................................................................................................................... 17
4.7.2
USB ......................................................................................................................................................... 17
4.7.3
I2C ........................................................................................................................................................... 19
4.7.4
SPI ........................................................................................................................................................... 20
5.
ELECTRICAL CHARACTERISTIC ............................................................................................................. 21
5.1
ABSOLUTE MAXIMUM RATING ........................................................................................................................ 21
5.2
RECOMMENDED OPERATING CONDITIONS ....................................................................................................... 21
5.3
INPUT/OUTPUT TERMINAL CHARACTERISTICS ................................................................................................. 21
5.3.1
Digital Terminals..................................................................................................................................... 21
5.3.2
USB ......................................................................................................................................................... 22
5.3.3
Internal CODEC - Analogue to Digital Converter .................................................................................. 22
5.3.4
Internal CODEC - Digital to Analogue Converter .................................................................................. 23
5.3.5
Microphone Input .................................................................................................................................... 23
5.3.6
Speaker Output ........................................................................................................................................ 23
5.4
POWER CONSUMPTIONS.................................................................................................................................... 24
6.
REFERENCE DESIGN .................................................................................................................................... 25
7.
MECHANICAL CHARACTERISTIC ........................................................................................................... 26
8.
RECOMMENDED PCB LAYOUT AND MOUNTING PATTERN............................................................ 27
8.1
ANTENNA CONNECTION AND GROUNDING PLANE DESIGN .............................................................................. 27
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FLC-BTM501 Datasheet
9.
10.
RECOMMENDED REFLOW PROFILE ...................................................................................................... 29
ORDERING INFORMATION .................................................................................................................... 30
10.1 PRODUCT PACKAGING INFORMATION .............................................................................................................. 30
10.2 ORDERING INFORMATION ................................................................................................................................. 32
10.2.1
Product Revision ..................................................................................................................................... 32
10.2.2
Shipping Package .................................................................................................................................... 32
10.2.3
Product Package ...................................................................................................................................... 32
10.2.4
Product Grade .......................................................................................................................................... 32
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FLC-BTM501 Datasheet
TABLES AND FIGURES
Table 1: Naming Declaration ........................................................................................................................................ 6
Table 2: General Specification ...................................................................................................................................... 9
Table 3: Pin Definition ................................................................................................................................................ 12
Table 4: Pin Status on Reset ........................................................................................................................................ 13
Table 5: Possible UART Settings ................................................................................................................................ 17
Table 6: USB Interface Component Values ................................................................................................................ 18
Table 7: Absolute Maximum Rating ........................................................................................................................... 21
Table 8: Recommended Operating Conditions ........................................................................................................... 21
Table 9: Digital Terminal ............................................................................................................................................ 22
Table 10: USB Terminal ............................................................................................................................................. 22
Table 11: Analogue to Digital Converter .................................................................................................................... 22
Table 12: Digital to Analogue Converter .................................................................................................................... 23
Table 13: Microphone Input ........................................................................................................................................ 23
Table 14: Microphone Output ..................................................................................................................................... 23
Table 15: Power consumptions ................................................................................................................................... 24
Table 16: Product Revision ......................................................................................................................................... 32
Table 17: Shipping Package ........................................................................................................................................ 32
Table 18: Product Package .......................................................................................................................................... 32
Table 19: Product Grade ............................................................................................................................................. 32
Figure 1: Block Diagram ............................................................................................................................................... 7
Figure 2: Pin Configuration......................................................................................................................................... 10
Figure 3: Audio Input and Output ............................................................................................................................... 14
Figure 4: An Example of the Audio Signal Control by PIOs ...................................................................................... 16
Figure 5: UART Connection ....................................................................................................................................... 17
Figure 6: USB Connections for Self-Powered Mode .................................................................................................. 18
Figure 7: USB Connections for Bus-Powered Mode .................................................................................................. 19
Figure 8: Example EEPROM Connection with I2C Interface..................................................................................... 20
Figure 9: Design SPI for In-System Programming and Debug ................................................................................... 20
Figure 10: Reference Design ....................................................................................................................................... 25
Figure 11: Mechanical Characteristic .......................................................................................................................... 26
Figure 12: Placement the Module on a System Board ................................................................................................ 27
Figure 13: Leave 5mm Clearance Space from the Antenna ........................................................................................ 27
Figure 14: Recommended Trace Connects Antenna and the Module ......................................................................... 28
Figure 15: Recommended Reflow Profile ................................................................................................................... 29
Figure 16: Product Packaging Information (Tape) ...................................................................................................... 30
Figure 17: Product Packaging Information (Tray) ...................................................................................................... 31
Figure 18: Ordering Information ................................................................................................................................. 32
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FLC-BTM501 Datasheet
1. Introduction
FLC-BTM501 is a small form factor, low power and highly economic Bluetooth radio module that
allows OEM to add wireless capability to their products. The module supports multiple interfaces
that make it simple to design into fully certified embedded Bluetooth solutions.
With FLC’s AT+™ programming interfaces, designers can easily customize their applications to
support different Bluetooth profiles, such HS/HF, A2DP, AVRCP, OPP, DUN, SPP, and etc. The
module supports Bluetooth® Enhanced Data Rate (EDR) and delivers up to 3 Mbps data rate for
distances to 10M.
The module is an appropriate product for designers who want to add wireless capability to their
products.
1.1 Naming Declaration
New Naming
Old Naming
FLC-BTM501XXXA
FLC-BTM501XXXB
FLC-BTMDC751
FLC-BTMDC751S
FLC-BTMDC751MV
FLC-BTMDC8501BM
FLC-BTMDC8501AS
FLC-BTM501XXXD
FLC-BTM501XXXE
Description
Built-in 16M flash memory.
Built-in 8M flash memory.
Built-in 16M flash memory. HTG.
Built-in 8M flash memory. Halogen-Free.
Table 1: Naming Declaration
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FLC-BTM501 Datasheet
1.2 Block Diagram
Balun
Filter
Antenna
PIOs
Microphone
Input
USB
SPI
BlueCore5-MM
UART
Speaker
Outputs
AUX_DAC
AIOs
Flash
Crystal
VDD
Figure 1: Block Diagram
1.3 Features

Bluetooth v2.1+EDR, Class 2

Profiles including HS/HF, A2DP, AVRCP, OPP, DUN, SPP, and etc.

UART and USB programming and data interfaces

Small form factor

SMT pads for easy and reliable PCB mounting

BQB/FCC/CE Certified

RoHS compliant

APTX
1.4 Applications

Automobile hands-free applications

Stereo headset applications

Cable replacements

Bar code and RFID scanners
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FLC-BTM501 Datasheet

Measurement and monitoring systems

Industrial sensors and controls

Medical devices

Industrial PCs and laptops
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FLC-BTM501 Datasheet
2. General Specification
Bluetooth Specification
Standard
Bluetooth2.1+EDR, Class II
Profiles
HS/HF, A2DP, AVRCP, OPP, DUN, SPP, etc.
detailed profiles depends on the firmware
Frequency Band
2.402GHz ~ 2.480GHz
Maximum Data Rate
3Mbps
RF Input Impedance
50 ohms
Baseband Crystal OSC
16MHz
Interface
Sensitivity
RF TX Power
UART, PIO, AIO, USB, SPI, Speaker, Microphone, etc.
-86dBm@0.1%BER
4dBm
Power
Supply Voltage
2.7V ~ 3.6V DC
Working Current
Depends on profiles, 30mA typical.
Standby Current
<1mA
Operating Environment
Temperature
Humidity
Certifications
Environmental
-40ºC to +85ºC for A and I grade
-20ºC to +70ºC for V and C grade
10%~90% Non-Condensing
BQB/FCC/CE
RoHS Compliant
Dimension and Weight
Dimension
23.24mm x 11.94mm x 2.00mm (2.2mm for FLC-BTM501D)
Weight
1g
Table 2: General Specification
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FLC-BTM501 Datasheet
3. Pin Definition
3.1 Pin Configuration
Figure 2: Pin Configuration
3.2 Pin Definition
Pin
Symbol
GND
I/O Type
Description
Ground
Ground
RESETB
CMOS input with weak internal
pull-up
Active LOW reset
SPI_CLK
input with weak internal pulldown
Serial Peripheral interface clock for programming
only
SPI_MISO
CMOS output, tri-state, with
weak internal pull-down
Serial Peripheral Interface output for
programming only
SPI_MOSI
CMOS input, with weak internal
Serial Peripheral Interface input for programming
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FLC-BTM501 Datasheet
pull-down
only
CMOS input with weak internal
pull-up
Chip select for Synchronous Serial Interface for
programming only, active low
SPI_CSB
PIO10
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
PIO11
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
PIO5
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
10
PIO3
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
11
PIO2
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
12
PIO0
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
13
PIO1
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
14
AUX_DAC
Analogue
Voltage DAC output
15
GND
Ground
Ground
16
MIC_BIAS
Analogue
Microphone Bias
17
RF_GND
RF Ground
RF ground
18
RF_IN
Analogue
Transceiver input/output line
19
RF_GND
RF Ground
RF ground
20
AIO1
Bi-directional
Analogue Programmable input/output line
21
AIO0
Bi-directional
Analogue Programmable input/output line
22
GND
Ground
Ground
23
MIC_LP
Analogue
Microphone input positive
24
MIC_LN
Analogue
Microphone input negative
25
SPK_LN
Analogue
Speaker output negative (left side)
26
SPK_LP
Analogue
Speaker output positive (left side)
27
SPK_RN
Analogue
Speaker output negative (right side)
28
SPK_RP
Analogue
Speaker output positive (right side)
29
PIO13
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
30
VDD
3.3v power input
3.3v power input
31
USB_DP
Bi-directional
USB data plus, pull up 1.5K when active
32
USB_DN
Bi-directional
USB data minus
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FLC-BTM501 Datasheet
33
GND
Ground
Ground
34
PIO14
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
35
PIO9
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
36
PIO4
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
37
GND
Ground
Ground
38
UART_TX
Bi-directional CMOS output, tristate, with weak internal pull-up
UART data output
39
UART_RX
CMOS input with weak internal
pull-down
UART data input
40
PIO8
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
41
PIO7
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
42
PIO6
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
Table 3: Pin Definition
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FLC-BTM501 Datasheet
4. Physical Interfaces
4.1 Power Supply
The transient response of the regulator is important. If the power rails of the module are supplied
from an external voltage source, the transient response of any regulator used should be 20μs or less.
It is essential that the power rail recovers quickly.
4.2 Reset
The module may be reset from several sources: RESETB pin, power-on reset, a UART break
character or via a software configured watchdog timer.
The RESETB pin is an active low reset and is internally filtered using the internal low frequency
clock oscillator. A reset will be performed between 1.5 and 4.0ms following RESETB being active.
It is recommended that RESETB be applied for a period greater than 5ms.
At reset the digital I/O pins are set to inputs for bi-directional pins and outputs are tri-state. The PIOs
have weak pull-ups.
Pin Name / Group
Pin Status on Reset
USB_DP
USB_DN
UART_RX
UART_TX
SPI_MOSI
SPI_CLK
SPI_CSB
SPI_MISO
RESETB
PIOs
AIOs
RF-IN
Input with PD
Input with PD
Input with PD
Tri-state output with PU
Input with PD
Input with PD
Input with PU
Tri-state output with PD
Input with PU
Bi-directional with PU
Output, drive low
High impedance
Table 4: Pin Status on Reset
Note: Pull-up (PU) and pull-down (PD) default to weak values unless specified otherwise.
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FLC-BTM501 Datasheet
4.3 Audio Interfaces
Audio interface provides following features:
 Mono analogue input for voice band and audio band
 Stereo and mono analogue output for voice band and audio band
MIC_LP
Input
Amplifier
∑△-ADC
MIC_LN
LP Filter
SPK_LP
SPK_LN
Output
Amplifier
DAC
Digital
Circuitry
LP Filter
SPK_RP
SPK_RN
Output
Amplifier
DAC
Figure 3: Audio Input and Output
The stereo audio CODEC uses a fully differential architecture in the analogue signal path, which
results in low noise sensitivity and good power supply rejection while effectively doubling the signal
amplitude. It operates from a single power-supply of 1.5V and uses a minimum of external
components. The module features a differential stereo audio output interfaces.
4.3.1 ADC
The ADC consists of a second order Digma Delta converter as show in Figure 3.
4.3.2 ADC Sample Rate Selection and Warping
ADC supports the following sample rates: 8kHz, 11.025kHz, 16kHz, 22.05kHz, 24kHz, 32kHz,
44.1kHz.
One of the main concerns for stereo wireless music applications is the ability to keep sampl rates for
the CODECs at both ends of the wireless link in synchronization. A VM function adjusts the sample
rate using a ‘warping’ function to tune the sample rate to the required value. The ADC warp function
allows the sample rate to be changed by +/-3%, in steps of 1/217, or 7.6ppm. The warp function
preserves the signal quality – the distortion introduced when warping the sample rate is negligible.
4.3.3 ADC Gain
The ADC contains two gain stages for each channel, an analogue and a digital gain stage.
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FLC-BTM501 Datasheet
4.3.4 DAC
The DAC contains two second order Sigma Delta converters allowing two separate channels that are
identical in functionality as show in Figure 3.
4.3.5 DAC Sample Rate Selection and Warping
Each DAC supports the following sample rates: 8kHz, 11.025kHz, 16kHz, 22.05kHz, 24kHz, 32kHz,
44.1kHz, 48kHz.
One of the main concerns for the DAC used in stereo wireless music applications is the ability to
keep sample rates for the CODECs at both ends of the wireless link in synchronization. A VM
function adjusts the sample rate using a ‘warping’ function to tune the sample rate to the required
value. The ADC warp function allows the sample rate to be changed by +/-3%, in steps of 1/217, or
7.6ppm. The warp function preserves the signal quality – the distortion introduced when warping the
sample rate is negligible.
4.3.6 DAC Gain
The DAC contains two gain stages for each channel, a digital and an analogue gain stage.
4.3.7 Mono Operation
Mono operation is single channel operation of the stereo CODEC. The left channel represents the
single mono channel for audio in and audio out. In mono operation the right channel is auxiliary
mono channel that may be used in dual mono channel operation.
4.3.8 Audio Input Stage
The audio input stage of the module consists of a low noise input amplifier, which receives its
analogue input signal from pins MIC_LP and MIC_LN to a second–order ∑-Δ ADC that outputs a
4Mbit/sec single-bit stream into the digital circuitry. The input can be configured to be either single
ended or fully differential. It can be programmed for either microphone or line input and has a 3-bit
digital gain setting of the input-amplifier in 3dB steps to optimize it for the use of different
microphones.
4.3.9 Microphone Input
Check the reference design in Figure 10 for the microphone input design.
4.3.10 Audio Output Stage
The output digital circuitry converts the signal from 16-bit per sample, linear PCM of variable
sampling frequency to a 2Mbits/sec multi-bit stream, which is fed into the analogue output circuitry.
The output circuit comprises a digital to analogue converter with gain setting and output amplifier.
Its class-AB output-stage is capable of driving a signal on both channels of up to 2V pk-pkdifferential into a load of 16Ω. The output is available as a differential signal between SPK_LP and
SPK_LN for the left channel; and between SPK_RP and SPK_RN for the right channel. The output
is capable of driving a speaker directly if its impedance is at least 8Ω if only one channel is
connected or an external regulator is used.
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FLC-BTM501 Datasheet
The gain of the output stage is controlled by a 3-bit programmable resistive divider, which sets the
gain in steps of approximately 3dB.
The multi-bit stream from the digital circuitry is low pass filtered by a second order bi-quad filter
with a pole at 20kHz. The signal is then amplified in the fully differential output stage, which has a
gain bandwidth of typically 1MHz.
4.4 RF Interface
The module integrates a balun filter. The user can connect a 50ohms antenna directly to the RF port.
4.5 General Purpose Analog IO
The general purpose analog IOs can be configured as ADC inputs by software. Do not connect them
if not use.
4.6 General Purpose Digital IO
There are nine general purpose digital IOs defined in the module. All these GPIOs can be configured
by software to realize various functions, such as button controls, LED displays or interrupt signals to
host controller, etc. Do not connect them if not use.
4.6.1 Audio Signal Control
PIOs can be used to switch on/off external audio amplifier and microphone-bias generation. Please
contact with Flaircomm for the special firmware.
PIO5
External Audio
Amplifier
FLC-BTM501
PIO11
Mic Bias Generation
Figure 4: An Example of the Audio Signal Control by PIOs
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FLC-BTM501 Datasheet
4.7 Serial Interfaces
4.7.1 UART
This is a standard UART interface for communicating with other serial devices. The UART interface
provides a simple mechanism for communicating with other serial devices using the RS232 protocol.
When the module is connected to another digital device, UART_RX and UART_TX transfer data
between the two devices. The remaining two signals, UART_CTS and UART_RTS, can be used to
implement RS232 hardware flow control where both are active low indicators. PIO10 and PIO11 can
be configured as UART_DTR and UART_RTS.
Parameter
Possible Values
1200 baud (≤2%Error)
9600 baud (≤1%Error)
4M baud (≤1%Error)
RTS/CTS or None
None, Odd or Even
1 or 2
Minimum
Baud Rate
Maximum
Flow Control
Parity
Number of Stop Bits
Bits per Byte
Table 5: Possible UART Settings
When connecting the module to a host, please make sure to follow Figure 5.
TX
RX
RX
TX
Module
Host
GND
GND
Figure 5: UART Connection
4.7.2 USB
There is a full speed (12M bits/s) USB interface for communicating with other compatible digital
devices. The module acts as a USB peripheral, responding to request from a master host controller,
such as a PC.
The module features an internal USB pull-up resistor. This pulls the USB_DP pin weakly high when
module is ready to enumerate. It signals to the USB master that it is a full speed (12Mbit/s) USB
device. The USB internal pull-up is implemented as a current source, and is compliant with section
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FLC-BTM501 Datasheet
7.1.5 of the USB specification v1.2. The internal pull-up pulls USB_DP high to at least 2.8V when
loaded with a 15kΩ ±5% pull-down resistor (in the hub/host) when VDD =3.1V. This presents a
Thevenin resistance to the host of at least 900Ω. Alternatively, an external 1.5kΩ pull-up resistor can
be placed between a PIO line and DP on the USB cable.
4.7.2.1
Self-Powered Mode
In self-powered mode, the module is powered from its own power supply and not from the VBUS
(5V) line of the USB cable. It draws only a small leakage current (below 0.5mA) from VBUS on the
USB cable. This is the easier mode for which to design, as the design is not limited by the power that
can be drawn from the USB hub or root port. However, it requires that VBUS be connected to
module via a resistor network (Rvb1 and Rvb2), so the module can detect when VBUS is powered
up. The module will not pull USB_DP high when VBUS is off.
Self-powered USB designs (powered from a battery or LDO) must ensure that a PIO line is allocated
for USB pull-up purposes. A 1.5KΩ 5% pull-up resistor between USB_DP and the selected PIO line
should be fitted to the design. Failure to fit this resistor may result in the design failing to be USB
compliant in self-powered mode. The internal pull-up in the module is only suitable for bus-powered
USB devices, e.g., dongles.
Figure 6: USB Connections for Self-Powered Mode
Note:
USB_ON is shared with the module PIO terminals.
Identifier
Value
Function
Rs
Rvb1
Rvb2
27Ω Nominal
22kΩ 5%
47kΩ 5%
Impedance matching to USB cable
VBUS ON sense divider
VBUS ON sense divider
Table 6: USB Interface Component Values
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FLC-BTM501 Datasheet
4.7.2.2 Bus-Powered Mode
In bus-powered mode, the application circuit draws its current from the 5V VBUS supply on the
USB cable. The module negotiates with the PC during the USB enumeration stage about how much
current it is allowed to consume. For Class 2 Bluetooth applications, FLC recommends that the
regulator used to derive 3.3V from VBUS is rated at 100mA average current and should be able to
handle peaks of 120mA without foldback or limiting. In bus-powered mode, the module requests
100mA during enumeration. For Class 1 Bluetooth applications, the USB power descriptor should be
altered to reflect the amount of power required. This is higher than for a Class 2 application due to
the extra current drawn by the Transmit RF PA. When selecting a regulator, be aware that VBUS
may go as low as 4.4V. The inrush current (when charging reservoir and supply decoupling
capacitors) is limited by the USB specification. Some applications may require soft start circuitry to
limit inrush current if more than 10µF is present between VBUS and GND.
Figure 7: USB Connections for Bus-Powered Mode
4.7.3 I2C
PIO8, PIO7 and PIO6 can be used to form a master I2C interface. The interface is formed using
software to drive these lines. It is suited only to relatively slow functions such as driving a LCD,
Keyboard, scanner or EEPROM. In the case, PIO lines need to be pulled up through 2.2Kohm
resistors.
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FLC-BTM501 Datasheet
Figure 8: Example EEPROM Connection with I2C Interface
4.7.4 SPI
The synchronous serial port interface (SPI) can be used for system debugging. It can also be used for
in-system programming for the flash memory within the module. SPI interface uses the SPI_MOSI,
SPI_MISO, SPI_CSB and SPI_CLK pins. Testing points for the SPI interface are reserved on board
in case that the firmware shall be updated during manufacture.
The module operates as a slave and thus SPI_MISO is an output of the module. SPI_MISO is not in
high-impedance state when SPI_CSB is pulled high. Instead, the module outputs 0 if the processor is
running and 1 if it is stopped. Thus the module should NOT be connected in a multi-slave
arrangement by simple parallel connection of slave SPI_MISO lines.
Figure 9: Design SPI for In-System Programming and Debug
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FLC-BTM501 Datasheet
5. Electrical Characteristic
5.1 Absolute Maximum Rating
Rating
Min
Max
Unit
Storage Temperature
-40
+120
°C
PIO/AIO Voltage
-0.4
+3.6
VDD_3V3 Voltage
-0.4
+3.6
USB_DP/USB_DN Voltage
-0.4
+3.6
Other Terminal Voltages except RF
-0.4
VDD+0.4
Min
Typical
Max
Unit
Storage Temperature
-40
--
+85
°C
Operating Temperature Range (for A and I grade)
-40
--
+85
°C
Operating Temperature Range (for V and C grade)
-20
--
+70
°C
VDD_3V3 Voltage
+2.7
+3.3
+3.6
Table 7: Absolute Maximum Rating
5.2 Recommended Operating Conditions
Operating Condition
Table 8: Recommended Operating Conditions
5.3 Input/output Terminal Characteristics
5.3.1 Digital Terminals
Supply Voltage Levels
Min
Typical
Max
Unit
VIL input logic level low
-0.3
+0.25xVDD
VIH input logic level high
0.625VDD
VDD+0.3
0.125
0.75xVDD
0.625xVDD
Ii input leakage current at Vin=VDD or 0V
-100
100
nA
Ioz tri-state output leakage current at Vo=VDD or 0V
-100
100
nA
With strong pull-up
-100
-40
-10
μA
10
40
100
μA
Input Voltage Levels
Output Voltage Levels
VOL output logic level low, lOL = 4.0mA
VOH output logic level high, lOH = -4.0mA
Input and Tri-state Current
With strong pull-down
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FLC-BTM501 Datasheet
-5
-1.0
-0.2
μA
-0.2
+1.0
5.0
μA
I/O pad leakage current
-1
+1
μA
CI Input Capacitance
1.0
5.0
pF
Resistive Strength
Rpuw weak pull-up strength at VDD-0.2V
500k
2M
Ω
Rpdw weak pull-up strength at 0.2V
500k
2M
Ω
Rpus strong pull-up strength at VDD-0.2V
10k
50k
Ω
Rpds strong pull-up strength at 0.2V
10k
50k
Ω
With weak pull-up
With weak pull-down
Table 9: Digital Terminal
5.3.2 USB
USB Terminals
Input Threshold
VIL input logic level low
VIH input logic level high
Min
Typical
Max
Unit
0.7VDD
0.3VDD
10.0
μA
pF
0.2
VDD
Input Leakage Current
GND < VIN < VDD(a)
-1
CI Input capacitance
2.5
Output Voltage Levels to Correctly Terminated USB Cable
VIL output logic level low
0.0
VIH output logic level high
2.8
Table 10: USB Terminal
(a) Internal USB pull-up disabled
5.3.3 Internal CODEC - Analogue to Digital Converter
Parameter
Min
Typical
Max
Unit
Resolution
16
Bits
Input Sample Rate
44.1
kHz
-24
82
81
80
79
79
78
21.5
dB
dB
dB
dB
dB
dB
dB
Signal / Noise, fin=1kHz, BW=20Hz->20kHz AWeighted THD+N<1% 150mV Vpk-pk
Fsample = 8kHz
Fsample = 11.025kHz
Fsample = 16kHz
Fsample = 22.05kHz
Fsample = 32kHz
Fsample = 44.1kHz
Digital Gain
Table 11: Analogue to Digital Converter
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FLC-BTM501 Datasheet
5.3.4 Internal CODEC - Digital to Analogue Converter
Parameter
Resolution
Output Sample Rate, Fsample
Signal / Noise, fin=1kHz, BW=20Hz>20kHz A-Weighted THD+N<0.01%
0dBFS signal Load-100kΩ
Fsample = 8kHz
Fsample = 11.025kHz
Fsample = 16kHz
Fsample = 22.05kHz
Fsample = 32kHz
Fsample = 44kHz
Fsample = 48kHz
Digital Gain
Gain Resolution
Min
Typical
Max
Unit
16
48
Bits
kHz
-24
95
95
95
95
95
95
95
1/32
21.5
dB
dB
dB
dB
dB
dB
dB
dB
dB
Table 12: Digital to Analogue Converter
5.3.5 Microphone Input
Microphone Input
Input full scale at maximum gain
Input full scale at minimum gian(differential)
Gain
Gain resolution
Distortion at 1kHz
3dB Bandwidth
Input impedance
THD+N(microphone input)@30mV rms input
Min
Typical
Max
Unit
800
20
0.04
42
-74
mV rms
mV rms
dB
dB
dB
kHz
kΩ
-3
Table 13: Microphone Input
5.3.6 Speaker Output
Speaker Driver
Output voltage full scale swing (differential)
THD+N 100kΩ load
THD+N 16Ω load
SNR(Load=16Ω, 0dBFS input relative to digital
silence)
Resistive
Allowed Load
Capacitive
Min
Typical
Max
Unit
750
0.01%
0.1%
mV rms
95
dB
16(8)
O.C.
500
Ω
pF
Table 14: Microphone Output
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FLC-BTM501 Datasheet
5.4 Power consumptions
Search
Unconnected (Deep
Sleep Idle Mode)
Connected Idle
Play with Minimum
Volume
Play with Maximum
Volume
Shutdown
~30mA
~0.57mA
~4mA
~35mA
~35mA
<50uA
Table 15: Power consumptions
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FLC-BTM501 Datasheet
6. Reference Design
Figure 10: Reference Design
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FLC-BTM501 Datasheet
7. Mechanical Characteristic
Figure 11: Mechanical Characteristic
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FLC-BTM501 Datasheet
8. Recommended PCB Layout and Mounting Pattern
Placement and PCB layout are critical to optimize the performances of a module without on-board
antenna designs. The trace from the antenna port of the module to an external antenna should be 50
and must be as short as possible to avoid any interference into the transceiver of the module. The
location of the external antenna and RF-IN port of the module should be kept away from any noise
sources and digital traces. A matching network might be needed in between the external antenna and
RF-IN port to better match the impedance to minimize the return loss.
As indicated in Figure 12 below, RF critical circuits of the module should be clearly separated from
any digital circuits on the system board. All RF circuits in the module are close to the antenna port.
The module, then, should be placed in this way that module digital part towards your digital section
of the system PCB.
Figure 12: Placement the Module on a System Board
8.1 Antenna Connection and Grounding Plane Design
Figure 13: Leave 5mm Clearance Space from the Antenna
Flaircomm Microelectronics Confidential
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FLC-BTM501 Datasheet
General design recommendations are:

The length of the trace or connection line should be kept as short as possible.

Distance between connection and ground area on the top layer should at least be as large as the
dielectric thickness.
Routing the RF close to digital sections of the system board should be avoided.
To reduce signal reflections, sharp angles in the routing of the micro strip line should be avoided.
Chamfers or fillets are preferred for rectangular routing; 45-degree routing is preferred over
Manhattan style 90-degree routing.


Figure 14: Recommended Trace Connects Antenna and the Module


Routing of the RF-connection underneath the module should be avoided. The distance of the
micro strip line to the ground plane on the bottom side of the receiver is very small and has huge
tolerances. Therefore, the impedance of this part of the trace cannot be controlled.
Use as many vias as possible to connect the ground planes.
Flaircomm Microelectronics Confidential
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FLC-BTM501 Datasheet
9. Recommended Reflow Profile
The soldering profile depends on various parameters necessitating a set up for each application. The
data here is given only for guidance on solder reflow.
℃
250
217
210
25
min
Figure 15: Recommended Reflow Profile
Pre-heat zone (A) — This zone raises the temperature at a controlled rate, typically 0.5 – 2 C/s.
The purpose of this zone is to preheat the PCB board and components to 120 ~ 150 C. This stage is
required to distribute the heat uniformly to the PCB board and completely remove solvent to reduce
the heat shock to components.
Equilibrium Zone 1 (B) — In this stage the flux becomes soft and uniformly encapsulates solder
particles and spread over PCB board, preventing them from being re-oxidized. Also with elevation
of temperature and liquefaction of flux, each activator and rosin get activated and start eliminating
oxide film formed on the surface of each solder particle and PCB board. The temperature is
recommended to be 150 to 210 for 60 to 120 second for this zone.
Equilibrium Zone 2 (c) (optional) — In order to resolve the upright component issue, it is
recommended to keep the temperature in 210 – 217  for about 20 to 30 second.
Reflow Zone (D) — The profile in the figure is designed for Sn/Ag3.0/Cu0.5. It can be a reference
for other lead-free solder. The peak temperature should be high enough to achieve good wetting but
not so high as to cause component discoloration or damage. Excessive soldering time can lead to
intermetallic growth which can result in a brittle joint. The recommended peak temperature (Tp) is
230 ~ 250 C. The soldering time should be 30 to 90 second when the temperature is above 217 C.
Cooling Zone (E) — The cooling ate should be fast, to keep the solder grains small which will give
a longerlasting joint. Typical cooling rate should be 4 C.
Flaircomm Microelectronics Confidential
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FLC-BTM501 Datasheet
10. Ordering Information
10.1 Product Packaging Information
Figure 16: Product Packaging Information (Tape)
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FLC-BTM501 Datasheet
Figure 17: Product Packaging Information (Tray)
Flaircomm Microelectronics Confidential
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FLC-BTM501 Datasheet
10.2 Ordering information
FLC-BTM501XYZA
Product Revision
Shipping Package
Product Package
Product Grade
Figure 18: Ordering Information
10.2.1 Product Revision
Product Revision
Product Grade
Availability
C/V
C/V
A/I
A/I
Yes
Yes
Yes
Yes
Table 16: Product Revision
10.2.2 Shipping Package
Shipping Package
Description
Quantity
Availability
Foam Tray
Plastic Tray
Tape
—
100x10x3 = 3000
1000x5 = 5000
No
Yes
Yes
Table 17: Shipping Package
10.2.3 Product Package
Product Package
Description
Availability
QFN
LGA
BGA
Connector
Yes
No
No
No
Table 18: Product Package
10.2.4 Product Grade
Product Grade
Description
Availability
Consumer
Industrial
Automobile After-Market
Automobile Before-Market
Refer to Table 16
Refer to Table 16
Refer to Table 16
Refer to Table 16
Table 19: Product Grade
Flaircomm Microelectronics Confidential
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11. Cautions &Warnings
11.1 EU Regulatory Conformance
Hereby, Flaircomm Microelectronics,Inc. declares that this device is in compliance with the
essential requirements and other relevant provisions of Directive 1999/5/EC.
The product is conformity with the following standards.
SAFETY (Art. 3.1(a)):
• EN 60950-1:2006+A11:2009:+A1:2010+A12:2011+A2:2013
HEALTH (Art. 3.1(a)):
• EN 62479:2010
EMC (Art. 3.1(b)):
• EN 301 489-1 V1.9.2:2011
• EN 301 489-17 V2.2.1:2012
RADIOS (Art. 3.2)
• EN 300 328 V1.9.1:2012
Notified body involved: Telefication B.V.
CE Number: 0560
11.2 Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause
undesired operation.
CAUTION: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation.
This equipment generates uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications.However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and receiver.
 Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
 Consult the dealer or an experienced radio/TV technician for help.
RF Warning Statement
To comply with FCC RF exposure compliance requirements, the antennas used for this transmitter
must be installed to provide a separation distance of at least 20 cm from all persons and must not
be co-located or operating in conjunction with any other antenna or transmitter.
This device is intended only for OEM integrators under the following conditions:
Flaircomm Microelectronics Confidential
1) The antenna must be installed such that 20 cm is maintained between the antenna and users,
and
2) The transmitter module may not be co-located with any other transmitter or antenna.
As long as 2 conditions above are met, further transmitter test will not be required.
However, the OEM integrator is still responsible for testing their end-product for any additional
compliance requirements required with this module installed
IMPORTANT NOTE: In the event that these conditions cannot be met (for example certain laptop
configurations or co-location with another transmitter), then the FCC authorization is no longer
considered valid and the FCC ID cannot be used on the final product. In these circumstances, the
OEM integrator will be responsible for reevaluating the end product(including the transmitter) and
obtaining a separate FCC authorization.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna may be installed
such that 20 cm may be maintained between the antenna and users. The final end product must be
labeled in a visible area with the following: “Contains FCC ID: P4I-BTM501”. The grantee's FCC ID
can be used only when all FCC compliance requirements are met.
Manual Information to the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to
install or remove this RF module in the user’s manual of the end product which integrates this
module.
The end user manual shall include all required regulatory information/warning as show in this
manual.
11.3 Industry Canada statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [*] est conforme à la norme NMB-003 du Canada.
This device complies with Industry Canada’s licence-exempt RSS standard(s). Operation is subject
to the following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio
exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :
1) l’appareil ne doit pas produire de brouillage;
2) l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d’en compromettre le fonctionnement.
Radiation Exposure Statement:
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the
radiator & your body.
Déclaration d'exposition aux radiations:
Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un
environnement non contrôé. Cet équipement doit être installé et utilisé avec un minimum de 20cm
de distance entre la source de rayonnement et votre corps.
This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antenna and users,
and
2) The transmitter module may not be co-located with any other transmitter or antenna.
Flaircomm Microelectronics Confidential
As long as 2 conditions above are met, further transmitter test will not be required. However, the
OEM integrator is still responsible for testing their end-product for any additional compliance
requirements required with this module installed.
Cet appareil est conçu uniquement pour les intégrateurs OEM dans les conditions
suivantes:1)L'antenne doit être installée de telle sorte qu'une distance de 20 cm est respectée
entre l'antenne et les utilisateurs, et 2) Le module émetteur peut ne pas être coïmplanté avec un
autre émetteur ou antenne.
Tant que les 2 conditions ci-dessus sont remplies, des essais supplémentaires surl'émetteur ne
seront pas nécessaires. Toutefois, l'intégrateur OEM est toujoursresponsable des essais sur son
produit final pour toutes exigences de conformitésupplémentaires requis pour ce module installé.
IMPORTANT NOTE: In the event that these conditions cannot be met (for example certain laptop
configurations or co-location with another transmitter), then the Canada authorization is no longer
considered valid and the IC ID cannot be used on the final product. In these circumstances, the
OEM integrator will be responsible for re-evaluating the end product(including the transmitter) and
obtaining a separate Canada authorization.
NOTE IMPORTANTE: Dans le cas où ces conditions ne peuvent être satisfaites (par exemple pour
certaines configurations d'ordinateur portable ou de certaines co-localisation avec un
autreémetteur), l'autorisation du Canada n'est plus considéré comme valide et l'ID IC ne peut pas
être utilisé sur leproduit final. Dans ces circonstances, l'intégrateur OEM sera chargé de réévaluer
le produit final (y comprisl'émetteur) et l'obtention d'une autorisation distinct au Canada.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna may beinstalled
such that 20 cm may be maintained between the antenna and users. The finalend product must be
labeled in a visible area with the following: “Contains IC: 20580-BTM501”.
Plaque signalétique du produit final
Ce module émetteur est autorisé uniquement pour une utilisation dans un dispositif oùl'antenne
peut être installée de telle sorte qu'une distance de 20cm peut être maintenueentre l'antenne et les
utilisateurs. Le produit final doit être étiqueté dans un endroit visible avec l'inscriptionsuivante:
"Contient des IC: 20580-BTM501".
Manual Information To the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to
install or remove this RF module in the user’s manual of the end product which integrates this
module.
The end user manual shall include all required regulatory information/warning as show in this
manual.
Manuel d'information à l'utilisateur final
L'intégrateur OEM doit être conscient de ne pas fournir des informations à l'utilisateur final quant à
la façon d'installer ou de supprimer ce module RF dans le manuel de l'utilisateur du produit final qui
intègre ce module. Le manuel de l'utilisateur final doit inclure toutes les informations réglementaires
requises et avertissements comme indiqué dans ce manuel.
The maximum operating ambient temperature of the equipment declared by the manufacturer is
-40~+85℃
Flaircomm Microelectronics Confidential

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