Computime CT-EM2506 ZigBee Module User Manual CT EM2506 V1 2

Computime Limited ZigBee Module CT EM2506 V1 2

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Document ID1718274
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Date Submitted2012-06-08 00:00:00
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Creation Date2012-05-18 11:49:03
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Document Lastmod2012-06-06 15:07:48
Document TitleMicrosoft Word - CT-EM2506-V1.2.doc
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Document Author: rnd-hardyfung

CT-EM2506 ZigBee Ready RF Transceiver Modules
ZigBee- Ready SoC RF Transceiver Modules
CT- EM2506 Series Specification
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Page 1 of 16
CT-EM2506 ZigBee Ready RF Transceiver Modules
Table of Content
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18
19
20
General Description ..................................................................................................................3
Applications ..............................................................................................................................3
Features .....................................................................................................................................3
Absolute Maximum Ratings .....................................................................................................4
Recommended Operating Conditions .......................................................................................4
Electrical Specifications............................................................................................................4
Introduction...............................................................................................................................6
Typical application block ..........................................................................................................6
Pin Assignment .........................................................................................................................7
Pin Description......................................................................................................................7
Block Diagram ......................................................................................................................9
Circuit Description................................................................................................................9
SIF Module Programming and Debug Interface .................................................................10
Power Management.............................................................................................................10
RF Frequency, Output Power Levels and Data Rates .........................................................11
Antenna Design Considerations..........................................................................................12
Product Approvals...............................................................................................................13
Mechanical Dimension .......................................................................................................15
Ordering Information ..........................................................................................................16
Document Revision History................................................................................................16
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CT-EM2506 ZigBee Ready RF Transceiver Modules
ZigBee- Ready SoC RF Transceiver Modules
1.
General Description
The CT-EM2506 SoC RF Transceiver Modules is a compact surface mounted
module specially designed for Ember’s ZigBee™ protocol stack for wireless networks,
EmberZNet, based on IEEE 802.15.4 standard in the 2.4GHz world-wide ISM band. It
provides 16 channels and compliant PHY and MAC layers. The complete module is
only 25.4 x 32.4 x 4.1mm. They both integrate a 2.4GHz, IEEE 802.15.4-compliant
transceiver with a 16-bit XAP2b microprocessor and a FEM. They consist of
integrated Flash and RAM memory and peripherals. A number of peripherals such as
GPIO, UART, SPI, I2C, ADC, and general purpose timers are integrated to support
user-defined applications.
2.
Applications
Home
automation &
building control
3.
Home
appliances &
alarms
Monitoring of
remote
systems
Lighting
controls
Sensor data
capturing
Features
ƒ Integrated PCB trace antenna
ƒ IEEE 802.15.4 compliant PHY and MAC layer
ƒ 12MHz XAP2b 16-bit microcontroller core
ƒ 128kB Flash and 5kB RAM, emulation EEPROM
ƒ 17 GPIO , 4 channel 12 bit ADC
ƒ UART, SPI, I2C and debug interfaces
ƒ External 32.768 kHz real time clock or internal RC oscillator for timer
ƒ 16 channels in the 2.4 GHz ISM band
ƒ On-chip regulator for 2.7-3.6V operation, three sleep low power modes
ƒ -15dBm------20dBm output power, SW controlled
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CT-EM2506 ZigBee Ready RF Transceiver Modules
4.
Absolute Maximum Ratings
Parameter
Test Conditions
Min.
Max.
Unit
Regulator voltage (VDD_PADS)
- 0.3
3.6
Voltage on any GPIO[16:0], SIF_CLK,
SIF_MISO, SIF_MOSI, nSIF_LOAD, OSC32A,
OSC32B, nRESET
- 0.3
VDD_PADS+
0.3
Storage temperature
- 40
+ 140
°C
Under no circumstances should the absolute maximum ratings given above be violated. Stress exceeding
one or more of the limiting values may cause permanent damage to the device.
5.
Recommended Operating Conditions
Parameter
Test Conditions
Min.
Regulator input voltage (VDD_PADS)
2.7
Core input voltage (VDD_24MHZ, VDD_VCO,
VDD_RF, VDD_IF, VDD_PADSA,
VDD_FLASH, VDD_PRE, VDD_SYNTH,
VDD_CORE)
1.7
Temperature range
- 40
6.
Typ.
Max.
Unit
3.6
1.8
1.9
+ 85
°C
Electrical Specifications
T = 25℃, VCC = 3.0V, fo = 2450Mhz, if nothing else stated.
Parameter
Min.
Typ.
Max
Unit Condition / Note
Operating frequency
2400
2483.5
MHz
Number of channels
16
Channel spacing
MHz
Input/output impedance
50
Ohm
Data rate
250
kbit/s
Mc/s
DSSS chip rate
Frequency stability
Transmit power
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-15
All rights reserved
Programmable in 5 MHz steps for
IEEE 802.15.4 compliance
For IEEE 802.15.4 compliance
+/-40
ppm
20
dBm
Confidential
For IEEE 802.15.4 compliance
Programmable from software
Page 4 of 16
CT-EM2506 ZigBee Ready RF Transceiver Modules
Parameter
Min. Typ.
Sensitivity
Adjacent channel
+/-5 MHz
rejection
Adjacent channel
+/-10 MHz
rejection
Co-channel rejection
Supply voltage
Unit
Condition / Note
-98
dBm
PER = 1% Boost Mode
35/35
dB
40/40
dB
IEEE 802.15.4 signal at 82dBm
-6
dB
IEEE 802.15.4 signal at - 82dBm
2.7
Max
3.6
IEEE 802.15.4 signal at - 82dBm
36
mA
Max RX sensitivity (normal mode)
38
mA
Max RX sensitivity (boost mode)
Current consumption
TX Mode
190
mA
20dBm output
Quiescent current
5.0
μA
Flash memory
128
KB
RAM memory
Simulated EEPROM memory
MCU clock frequency
12
KB
KB
MHz
RC OSCILATOR frequency
10
KHZ
MCU low frequency crystal
32.768
kHz
Current consumption
RX mode
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CT-EM2506 ZigBee Ready RF Transceiver Modules
7.
Introduction
The CT-EM2506 series of modules are specially designed for ZigBee application. They
provide a fast jump start design for system integrators or electronic designers wishing to
use ZigBee wireless technologies. The module contains qualified RF hardware and
enough processor power to run the EmberZNet stack or other ZigBee network stack
(depending on version), making it a powerful platform for building wireless networking
products. ZigBee Coordinators (ZC), ZigBee Routers (ZR), and ZigBee End Devices
(ZED) are all supported and are programmed onto the module together with a custom
application. Minimal RF design experience is needed to use CT-EM2506 modules.
8.
Typical application block
GPIO PIN
MCU and/or
Peripheral
Equipment
VDD_PADS=2.7-3.6V
SIF PIN
Ember
Debug and
programming
interface
EM250
SIF PIN
Hum.
Sensor
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Temp.
Sensor
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FEM
4 General A/D
Page 6 of 16
CT-EM2506 ZigBee Ready RF Transceiver Modules
9.
Pin Assignment
TOP VIEW
10. Pin Description
Pin#
Signal
Direction
Description
CLK
DI
SIF Interface clock
MISO
DO
SIF Interface master in/slave out
MOSI
DI
SIF Interface master out/slave in
LOADB
DI/DO
SIF Interface load strobe
GPIO16
DI/DO
General Purpose Digital I/O, Output B of Timer 1, Capture Input B of
Timer 2, or Source D Interrupt
GPIO15
DI/DO
General Purpose Digital I/O, Output A of Timer 1, Capture Input A of
Timer 2, or Source C Interrupt
GPIO14
DI/DO
General Purpose Digital I/O, Output B of Timer 2, Capture Input B of
Timer 1, or Source B Interrupt
GPIO13
DI/DO
General Purpose Digital I/O, Output A of Timer 2, or Capture Input A of
Timer 1
GROUND
GND
Ground
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CT-EM2506 ZigBee Ready RF Transceiver Modules
10
GROUND
GND
Ground
11
GROUND
GND
Ground
12
GROUND
GND
Ground
13
IDLE_EN
14
VBRD
PI
Power Supply Input
15
RSTB
DI
Reset, active low
16
GPIO11
DI/DO
General Purpose Digital I/O, SC1 UART CTS, SC1 SPI master clock,
or Capture Input A of Timer 2
17
GPIO12
DI/DO
General Purpose Digital I/O, SC1 UART RTS, or Capture Input B of
Timer 2
18
GPIO0
DI/DO
General Purpose Digital I/O, SC2 SPI MOSI, or Capture Input A of
Timer 1
19
GPIO1
DI/DO
General Purpose Digital I/O, SC2 SPI MISO, SC2 I2C SDA,
or Capture Input A of Timer 2
20
GPIO2
DI/DO
General Purpose Digital I/O, SC2 SPI master clock, SC2 I2C SCL, or
Capture Input B of Timer 2
21
GPIO3
DI/DO
General Purpose Digital I/O, SC2 SPI slave select, or Capture Input B
of Timer 1
22
GPIO4
DI/DO/AI
General Purpose Digital I/O, ADC Input 0, or PTI frame signal
23
GPIO5
DI/DO/AI
General Purpose Digital I/O, ADC Input 1, or PTI data signal
24
GPIO6
DI/DO/AI
General Purpose Digital I/O, ADC Input 2, Timer 2 Clock Input, or
Timer 1 Enable
25
GPIO7
DI/DO/AI
General Purpose Digital I/O, ADC Input 3, Timer 2 Clock Input,
External regulator open collector output
26
GPIO8
DI/DO/AO
General Purpose Digital I/O, ADC Reference Output, Timer 1 Clock
Input, Timer 2 Enable, or Source A Interrupt
27
GPIO9
DI/DO
General Purpose Digital I/O, SC1 TXD, SC1 MO, SC1 I2C Data,
or Capture Input A of Timer 1
28
GPIO10
DI/DO
General Purpose Digital I/O, SC1 RXD, SC1 MI, SC1 I2C Clock,
or Capture Input B of Timer 1
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Enable the FEM in deep sleep mode , Active high, in other state, set it
in low level
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Page 8 of 16
CT-EM2506 ZigBee Ready RF Transceiver Modules
11. Block Diagram
2.7 – 3.6V
2.7 – 3.6V
16 Bit MCU
Digital/Analog I/O
UART interface
SPI interface
I C interface
User
Application
TM
Zigbee
Network
IEEE 802.15.4
RF Transceiver
RF Frond End
IEEE 802.15.4
MAC
12. Circuit Description
The module contains an IEEE 802.15.4 compliant SoC RF transceiver, internal memory,
high speed oscillator, RC oscillator, an FEM . The module is intended to run the
EmberZNet ZigBee software or other ZigBee network implementation, depending on the
specific version.
The application software together with the ZigBee protocol software stack can be
programmed in Flash memory through the SIF module, using an evaluation board from
Ember InSight Desktop.
To support user-defined applications, a number of peripherals such as GPIO, UART, SPI,
I2C, ADC, and general-purpose timers are integrated. Also, an integrated voltage
regulator, power-on-reset circuitry, sleep timer, and low-power sleep modes are available.
The deep sleep mode draws less than 5μA , allowing products to achieve long battery life.
For further details on the SoC transceiver (Ember EM250), please consult the data sheet
at http://www.ember.com
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CT-EM2506 ZigBee Ready RF Transceiver Modules
13. SIF Module Programming and Debug Interface
SIF is a synchronous serial interface developed by Cambridge Consultants Ltd. It is the
primary programming and debug interface of the CT-EM2506. The SIF module allows
external devices to read and write memory-mapped registers in real-time without
changing the functionality or timing of the XAP2b core.
The SIF interface provides the following:
ƒ IC production test (especially analog)
ƒ PCB production test
ƒ XAP2b code development
ƒ Product control and characterization
The pins are:
ƒ SIF_LOADB
ƒ SIF_CLK
ƒ SIF_MOSI
ƒ SIF_MISO
The maximum serial shift speed for the SIF interface is 48MHz. SIF interface accesses
can be initiated even when the chip is in idle and deep sleep modes. An edge on
SIF_LOADB wakes the chip to allow SIF cycles.
14. Power Management
The CT-EM2506 supports three different power modes:
IDLE and DEEP SLEEP.
processor ACTIVE, processor
The IDLE power mode stops code execution of the XAP2b until any interrupt occurs or an
external SIF wakeup command is seen. All peripherals including the radio continue to
operate normally.
The DEEP SLEEP power mode powers off most of the module but leaves the critical chip functions,
such as the GPIO pads and RAM powered by the High Voltage Supply (VDD_PADS). The module
can be woken by configuring the sleep timer to generate an interrupt after a period of time, using an
external interrupt, or with the SIF interface. Activity on a serial interface may also be configured to
wake up the module, though actual reception of data is not re-enabled until the module has finished
waking up. Depending on the speed of the serial data, it is possible to finish waking up in the middle
of a byte. Care must be taken to reset the serial interface between bytes and discard any garbage data
before the rest. Another condition for wakeup is general activity on GPIO pins.
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CT-EM2506 ZigBee Ready RF Transceiver Modules
15. RF Frequency, Output Power Levels and Data Rates
The following table shows the RF channels as defined by the IEEE 802.15.4
RF channel
Frequency
11
2405MHz
12
2410MHz
13
2415MHz
14
2420MHz
15
2425MHz
16
2430MHz
17
2435MHz
18
2440MHz
19
2445MHz
20
2450MHz
21
2455MHz
22
2460MHz
23
2465MHz
24
2470MHz
25
2475MHz
26
2480MHz
The output power level of EM250 can be configured in the range -32 to 3dBm and the
gain of FEM is 17dB, So the module output can controlled in range -15 to 20dBm. The RF
transceiver uses direct sequence spread spectrum (DSSS) with a raw data rate of 250
kbit/s. The modulation format is Offset – Quadrature Phase Shift Keying (O-QPSK). It is
robust even under noisy environments when sharing the same frequency band with other
applications.
Note: The output power of EM250 should be configured lower than -19dBm for
the channel 2480MHz to comply FCC.
The use of RF frequencies and maximum allowed RF power should according to different
national regulations. The CT-EM2506 is complying with the applicable regulations for the
world wide 2.4GHz ISM band.
[Subject to final approval: Specifically it complies with the European Union R&TTE directive
meeting EN 300 328 and EN300 440 class 2. It also meets the FCC CFR47 Part15 regulations for use
in the US and the ARIB T-66 for use in Japan.]
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CT-EM2506 ZigBee Ready RF Transceiver Modules
16. Antenna Design Considerations
The CT-EM2506 module includes an integrated PCB trace antenna. An optional MMCX
connector can be specified, enabling connection to a 50-ohm external antenna of the user’s
choice..
The PCB antenna employs an F-Antenna topology that is compact and supports an
omni-directional radiation pattern. To maximize antenna efficiency, an adequate ground
plane must be provided on the host PCB. If positioned correctly, the ground plane on the host
board under the module can contribute significantly to antenna performance.
The position of the module on the host board and overall design of the product enclosure
contribute to antenna performance. Poor design effects radiation patterns and can result in
reflection, diffraction, and/or scattering of the transmitted signal.
Here are some design guidelines to help ensure antenna performance:
• Never place the ground plane or route copper traces directly underneath the antenna
portion of the module.
• Never place the antenna close to metallic objects.
• In the overall design, ensure that wiring and other components are not placed near the
antenna.
• Do not place the antenna in a metallic or metallized plastic enclosure.
• Keep plastic enclosures 1cm or more from the antenna in any direction.
Test at 2440MHZ
__
Vertical Polarization Gain
(dBi)
Avg : -14.8
---
Horizontal Polarization Gain
(dBi)
Avg : -3.4
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CT-EM2506 ZigBee Ready RF Transceiver Modules
17. Product Approvals
17.1
FCC Approvals
The CT-EM2506 has been designed to meet all national regulations for World-wide use.
Using the integrated antenna it conforms to FCC CFR 47 Part 15 (USA).
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, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
The device CT-EM2506 carries FCC authorization and is marked with the FCC ID
Number. Whilst any device into which this authorized module is installed will not normally
be required to obtain FCC authorization, this does not preclude the possibility that some
other form of authorization or testing may be required for the finished device.
When the CT-EM2506 module is integrated inside another device/product, then the
outside surface of that device/product must display a label referring to the enclosed
module. This exterior label can use wording such as “Contains Transmitter Module
FCC ID: DI2CT-EM2506” or “Contains FCC ID: DI2CT-EM2506”, although any similar
wording that expresses the same meaning may be used.
To meet the Section 15.209 emission requirements in the restricted frequency
bands of Section 15.205, the transceiver transmitter power for the CT-EM2506
module needs to be reduced from the typical maximum setting on the upper
channels(2480MHz).Maximum output power of Ember is -19dBm(Configured the
output power of EM250 lower than -19dBm and enable the boost mode at the same
time).
FCC statement:
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.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
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CT-EM2506 ZigBee Ready RF Transceiver Modules
17.2
CE Certificate
With the integrated antenna the CT-EM2506 has been tested and conforms to the
following standards:
• Radio: ETSI EN300 328 V1.6.
• EMC: ETSI EN301 489-17 V1.2.1
• EMC: ETSI EN301 489-1 V1.6.1
• Safety: IEC/EN60950-1
If the CT-EM2506 module is incorporated into an OEM product, the OEM product
manufacturer must ensure compliance of the final product to the European EMC, and low
voltage/safety standards. A Declaration of Conformity must be issued for each of these
standards and kept on file as described in the R&TTE Directive. The final product must
not exceed the specified power ratings, as specified in this specification. If any of these
specifications are exceeded in the final product then a submission must be made to a
notified body for compliance testing to all of the required standard
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Page 14 of 16
CT-EM2506 ZigBee Ready RF Transceiver Modules
18 Mechanical Dimension
25.4
4.1
3.81
2.54
32.4
23.22
2.54
1.91
1.6
10.52
1.53
1.53
2.79Typ 28 pads
1.78Typ 28 pads
2.54 Pitch Typ
0.38
5.2
22.61
Unit in mm
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CT-EM2506 ZigBee Ready RF Transceiver Modules
19 Ordering Information
Ordering Part Number
CT-EM2506
Description
ZigBee-ready RF module, 128 KB Flash, PCB trace
antenna, 20dBm output. FCC/CE certificate
20 Document Revision History
Document Revision
change
1.0
Draft
1.1
Add MSL
1.2
Modify output power of 2480MHz
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