EnOcean TCM515B 2.4 GHz Bluetooth Low Energy (BLE) Transceiver User Manual

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

Patent protected:

WO98/36395, DE 100 25 561, DE 101 50 128,

WO 2004/051591, DE 103 01 678 A1, DE 10309334,

WO 04/109236, WO 05/096482, WO 02/095707,

US 6,747,573, US 7,019,241

Observe precautions! Electrostatic sensitive devices!

14 December 2017

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

REVISION HISTORY

The following major modifications and improvements have been made to this document:

Version

Author Reviewer

Date Major Changes

0.1 MKA MKA 15.02.2017

Initial Release

0.2 MKA MKA 14.07.2017

Update regarding operation conditions

0.3 MKA MKA 19.09.2017

Added detailed pin mapping

0.4 RS MKA 19.09.2017

Added antenna options and descriptions

0.5 RS MKA 05.10.2017

Added FCC

labelling requirements, RF exposure

and distance requirements, FCC and ISED certifi-

cates

0.6 RS 14.12.2017

Updated chapters to RF exposure

Published by EnOcean GmbH, Kolpingring 18a, 82041 Oberhaching, Germany

www.enocean.com, info@enocean.com, phone +49 (89) 6734 6890

Important!

This information describes the type of component and shall not be considered as assured

characteristics. No responsibility is assumed for possible omissions or inaccuracies. Circuitry

and specifications are subject to change without notice. For the latest product specifica-

tions, refer to the EnOcean website: http://www.enocean.com.

As far as patents or other rights of third parties are concerned, liability is only assumed for

modules, not for the described applications, processes and circuits.

EnOcean does not assume responsibility for use of modules described and limits its liability

to the replacement of modules determined to be defective due to workmanship. Devices or

systems containing RF components must meet the essential requirements of the local legal

authorities.

The modules must not be used in any relation with equipment that supports, directly or

indirectly, human health or life or with applications that can result in danger for people,

animals or real value.

Components of the modules are considered and should be disposed of as hazardous waste.

Local government regulations are to be observed.

Packing: Please use the recycling operators known to you.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

TABLE OF CONTENT

1 GENERAL DESCRIPTION ................................................................................. 5

1.1 Basic functionality ......................................................................................... 5

1.2 Technical data ............................................................................................... 6

1.3 Physical dimensions ....................................................................................... 6

1.4 Environmental conditions ............................................................................... 6

1.5 Packaging information .................................................................................... 6

1.6 Ordering information ..................................................................................... 6

2 FUNCTIONAL INFORMATION ........................................................................... 7

2.1 TCM 515B Device Interface ............................................................................. 7

2.1.1 Signal Description .................................................................................. 8

2.2 High-level operation principle .......................................................................... 8

2.3 Radio functionality ......................................................................................... 9

2.4 Radio transmission sequence ........................................................................ 10

2.5 Radio reception sequence ............................................................................. 10

2.6 User-defined radio channels .......................................................................... 10

3 Telegram format ......................................................................................... 11

3.1 Preamble .................................................................................................... 11

3.2 Access Address ........................................................................................... 11

3.3 Header ....................................................................................................... 11

3.4 Source address ........................................................................................... 12

3.4.1 Static source address mode .................................................................. 12

3.4.2 Private resolvable source address mode ................................................. 13

3.5 Check Sum ................................................................................................. 14

3.6 Payload ...................................................................................................... 15

3.7 Sensor status encoding ................................................................................ 16

3.7.1 Sensor Data Descriptor ......................................................................... 16

3.7.2 Sensor Status...................................................................................... 17

3.8 TCM 515B telegram authentication ................................................................ 18

3.9 ESP3 Interface ............................................................................................ 19

3.9.1 ESP3 Data Format................................................................................ 19

4 DEVICE INTEGRATION ................................................................................. 20

4.1 Recommended PCB Footprint ........................................................................ 20

4.2 Antenna options .......................................................................................... 21

4.2.1 General antenna requirements for TCM 515B .......................................... 21

4.2.2 Specific antenna requirements for European Union................................... 21

4.2.3 Specific antenna requirements for US / Canada ....................................... 21

4.2.4 Antenna Description ............................................................................. 21

4.2.4.1 Whip Antenna ................................................................................... 21

4.2.4.2 Meandered PCB Antenna .................................................................... 23

4.2.4.3 Dipole antenna requirements .............................................................. 25

4.3 Soldering information .................................................................................. 29

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

4.4 Device handling instructions ......................................................................... 29

4.5 Device operation instructions ........................................................................ 30

4.6 Tape & Reel specification .............................................................................. 31

5 APPLICATION INFORMATION ........................................................................ 32

5.1 Transmission range ............................................................................................ 32

6 REGULATORY INFORMATION......................................................................... 33

6.1 CE (RED) for European Union ........................................................................ 33

6.2 FCC (United States) Certificate ...................................................................... 34

6.2.1 FCC (United States) regulatory statement ............................................... 35

6.2.2 FCC (United States) labeling requirements .............................................. 35

6.2.3 FCC (United States) RF exposure statement ............................................ 35

6.3 ISED (Industry Canada) Technical Acceptance Certificate ................................. 36

6.3.1 ISED (Industry Canada) regulatory statement ......................................... 37

6.3.2 ISED (Industry Canada) RF exposure statement ...................................... 37

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

1 GENERAL DESCRIPTION

1.1 Basic functionality

TCM 515B provides radio transceiver functionality (telegram transmission and reception)

according to the Bluetooth Low Energy standard in the 2.4 GHz radio band. TCM 515B re-

ceives and transmits radio telegrams based on a whip or PCB antenna connected via the

host PCB.

TCM 515B is primarily intended for use within energy harvesting wireless sensors where it

will provide the required radio functionality. To meet this requirement, TCM 515B provides

a radio application programming interface (API) for transmission and reception of 2.4 GHz

BLE radio telegrams. This radio API can be used by sensor applications running on TCM

515B to transmit and receive radio telegrams.

Additionally, TCM 515B provides an ESP3 interface to an external host which can be used to

transmit and receive data tele-grams.

TCM 515B provides an I2C interface which can be used to connect external sensors.

TCM 515B is implemented as 31 pin reflow-solderable module in an optimized form factor

to enable size constrained applications. The module design is mechanically compatible with

the other members of the TCM 515 radio transceiver family to enable reuse.

Figure 1 below shows TCM 515B.

Figure 1 – TCM 515B outline

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

1.2 Technical data

Antenna External 50 Ohm or whip antenna (connected at host board)

Supported Radio Frequency Range 2402 … 2480 MHz

Default Radio Channels Advertising on Channel 37, 38 and 39

Receiver Sensitivity (at 25°C)

(1)

Minimum: -92dBm / Typical: –95 dBm

Transmit Power (at 25°C) Adjustable up to +4 dBm

Power Supply 3.3 V +- 10%

Serial Host Interface UART according to ESP3 Standard with Turbo Mode Option

Current Consumption (typ, at 25°C) 15 mA

Module Dimensions 19.0 x 14.7 x 3.0 mm (each dimension +-0.3 mm)

Note (1): Receiver sensitivity is based on the combination of 3 subtelegrams

1.3 Physical dimensions

Module Dimensions 19.0 x 14.7 x 3.0 mm (each dimension +-0.3 mm)

Module Weight 1 g

1.4 Environmental conditions

Operating Temperature -25°C ... 85°C

Storage Temperature -25°C ... 85°C

Humidity 0% to 95% r.h. (non-condensing)

1.5 Packaging information

Packaging Unit 250 units

Packaging Method Tape and reel

1.6 Ordering information

Type Ordering Code Frequency

TCM 515B S3223-K515 2.4 GHz (BLE)

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

2 FUNCTIONAL INFORMATION

2.1 TCM 515B Device Interface

TCM 515B implements a 31 pin reflow-solderable interface. Solder mask data is available

on request from EnOcean. The pin assignment (as seen from the top of the device) is

shown in Figure 2 below.

Figure 2 – TCM 515B device interface

Table 1 below summarizes the signal assignment.

PIN NAME PIN

NAME PIN NAME

1 GND 12 Digital IO 23 GND

2 ANTENNA (50 Ohms) 13 Digital IO 24 Debug

3 GND 14 Digital IO 25 Debug

4 Digital IO 15 GND 26 Digital IO

5 Digital IO 16 Analog / Digital IO 27 Digital IO

6 GND 17 Analog / Digital IO 28 Digital IO

7 Analog / Digital IO 18 I2C Data 29 Digital IO

8 Analog / Digital IO 19 I2C CLK 30 Digital IO

9 Analog / Digital IO / 32 kHz OSC 20 UART RX (Input) 31 TURBO

10 Analog / Digital IO / 32 kHz OSC 21 UART TX (Output)

11 Analog/ Digital IO 22 VDD

Table 1 - TCM 515B device interface pin assignment

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

2.1.1 Signal Description

TCM 515B is supplied by the VDD and GND Pins. The required supply voltage is 3.3V with a

tolerance of no more than +-10%.

TCM 515B receives and transmits data based on a 50Ω whip antenna connected to its AN-

TENNA input (Pin 2).

TCM 515B communicates with the external host using the standard ESP3 serial (UART) in-

terface based on the signals UART_TX (Pin 21, direction from TCM 515B to external host)

and UART_RX (Pin 20, direction from external host to TCM 51Z).

The default interface speed of the ESP3 interface is 57600 bit per second (the exact speed

is 57347 Bit per second, a deviation of -0.04%).

It is possible to select faster communication speeds of 115200, 230400 and 460800 bit per

second during operation using the ESP3 CO_SET_BAUDRATE command.

Additionally it is possible to change the default ESP3 interface speed at power up from

57.600 Bit per second to 460.800 Bit per second by connecting the TURBO input (Pin 31) to

Ground. Subsequent modification of the interface speed during operation using the

CO_SET_BAUDRATE command is always possible irrespective of the state of the TURBO

input pin.

TCM 515B provides one or two I2C interfaces as primarily means to connect external sen-

sors. Additionally, it provides digital and analog inputs and outputs as well as the option for

an SPI interface.

2.2 High-level operation principle

In receive mode, TCM 515B forwards the content of received BLE radio telegrams (which

pass frame check sum validation) unmodified to the sensor application SW or an external

host via the ESP3 interface. The sensor application can use the data of received telegrams

for instance to adjust parameters such as update intervals.

In transmit mode, TCM 515B receives from the application SW or an external host the pre-

computed message payload. TCM 515B then calculates the frame check sum and appends it

to the message. The full frame (including the Preamble and Start of Frame fields) will then

be transmitted as BLE radio telegram (TX mode).

The sensor application uses an internal or external timer to periodically wake-up and check

the status of the connected sensors. Based on this status information, it will decide if

transmission of a telegram is necessary and if so forward it to the radio routine by means

of its API.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

2.3 Radio functionality

TCM 515B transmits and receives advertising telegrams within the 2.4 GHz radio frequency

band (2402MHz … 2480MHz) using the BLE advertising frame format.

By default, TCM 515B will use the three BLE advertising channels (BLE Channel 37, 38 and

39) defined for transmission and reception. The transmission of a radio telegram on these

three advertising channels is called an Advertising Event.

Use of different radio channels within the frequency band from 2402 MHz to 2480 MHz is

possible and can be configured by the application software or the external host (via ESP3

interface).

Table 2 below summarizes radio channels supported by TCM 515B.

Radio Channel Frequency Channel Type

BLE Radio Channels

37 2402 MHz BLE Advertising Channel

0 2404 MHz BLE Data Channel

1 2406 MHz BLE Data Channel

…

10 2424 MHz BLE Data Channel

38 2426 MHz BLE Advertising Channel

11 2428 MHz BLE Data Channel

12 2430 MHz BLE Data Channel

…

36 2478 MHz BLE Data Channel

39 2480 MHz BLE Advertising Channel

Custom Radio Channels

40 2403 MHz Custom Radio Channel

41 2405 MHz Custom Radio Channel

…

77 2477 MHz Custom Radio Channel

78 2479 MHz Custom Radio Channel

Table 2 – TCM 515B supported radio channels

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

2.4 Radio transmission sequence

TCM 515B transmits telegrams in its standard configuration by using so-called Advertising

Events.

An advertising event is defined as the transmission of the same radio telegram on all se-

lected radio channels (by default this would be on BLE Channel 37, 38 and 39) one after

another with minimum delay in between.

For reliability reasons, TCM 515B will send three redundant advertising events for each

transmission. The resulting transmission sequence is shown in Figure 3 below.

Figure 3 – Default radio transmission sequence

2.5 Radio reception sequence

TCM 515B receives radio telegrams in its standard configuration by monitoring the Adver-

tising Channels (Channel 37, 38 and 39). Alternative channels can be selected via the radio

API or the ESP3 interface.

TCM 515B will continuously scan these channels one after the other for valid data tele-

grams. The time spent on each channel is configurable.

2.6 User-defined radio channels

In certain situations it might be desirable to transmit and receive radio telegrams on chan-

nels other than the three advertising channels.

TCM 515B therefore allows to select the radio channels to be used for the transmission and

reception. The selection of the radio channels is done by the application SW using the radio

API or the external host using the ESP3 interface.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3 Telegram format

TCM 515B transmits and receives radio telegrams in the 2.4 GHz band according to BLE

frame structure. For detailed information about the BLE standard, please refer to the appli-

cable specifications.

Figure 4 below summarizes the BLE frame structure.

Figure 4 – BLE frame structure

The content of these fields is described in more detail below.

3.1 Preamble

The BLE Preamble is 1 byte long and identifies the start of the BLE frame. The value of the

BLE Preamble is always set to 0xAA.

3.2 Access Address

The 4 byte BLE Access Address identifies the radio telegram type. For advertising frames,

the value of the Access Address is always set to 0x8E89BED6.

3.3 Header

The BLE Header identifies certain radio telegram parameters. Figure 5 below shows the

structure of the BLE header.

Figure 5 – BLE header structure

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.4 Source address

The 6 byte BLE Source Address (MAC address) uniquely identifies each TCM 515B product.

TCM 515B supports two source address modes:

 Static Source Address mode (default)

In this mode, the source address is constant (but its lower 32 bit can be configured

via radio API)

 Private Resolvable Address mode (NFC configurable)

In this mode, the source address changes for each transmission

TCM 515B uses by default the Static Source Address mode. Private Resolvable Address

mode can be selected via the radio API. These two address modes are described in the fol-

lowing chapters.

3.4.1 Static source address mode

By default, TCM 515B uses static source addresses meaning that the source address is con-

stant during normal operation. The structure of TCM 515B static addresses is as follows:

 The upper 2 bytes of the source address are used to identify the device type and set

to 0xE500 to designate EnOcean STM 500 multi-sensor type. These two bytes cannot

be changed.

 The lower 4 bytes are uniquely assigned to each device.

Figure 6 below illustrates the static address structure used by TCM 515B.

Figure 6 – BLE static source address structure

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.4.2 Private resolvable source address mode

For some applications it is desirable to modify (rotate) the source address used by TCM

515B in order to prevent tracking of its radio transmissions. At the same time, each TCM

515B device must remain uniquely identifiable by the receiver.

To achieve these goals, TCM 515B can be configured via radio API to use random resolvable

private addresses.

Using random resolvable private addresses requires that both TCM 515B and the receiver

both know a common key – the so-called Identity Resolution Key (IRK). TCM 515B uses its

device-unique random key as identity resolution key.

For resolvable private addresses, the 48 bit address field is split into two sub-fields:

 prand

This field contains a random number which always starts (two most significant bits)

with 0b10. The prand value is changed for each telegram that is transmitted. Indi-

vidual advertising events used to transmit one telegram use the same prand value.

 hash

This field contains a verification value (hash) generated from prand using the IRK

The structure of a random resolvable private address is shown in Figure 7 below.

Figure 7 – BLE private resolvable source address structure

The prand value is encrypted using the IRK. The lowest 24 bit of the result (encrypted

value) are then used as hash.

The concatenation of 24 bit prand and 24 bit hash will be transmitted as 48 bit private re-

solvable source address.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

The receiving device maintains a list of IRK for all transmitters that have been commis-

sioned to work with it.

Whenever the receiving device receives a radio telegram with private resolvable source

address (identified by the most significant bits being set to 0b10), it will itself generate a 24

bit hash from the 24 bit prand sequentially using the IRK of each device that it has been

learned into it.

If an IRK matches (i.e. when prand is encoded with this specific IRK then the result

matches hash), then the receiver has established the identity of the transmitter.

So conceptually the IRK takes the role of the device source address while prand and hash

provide a mechanism to select the correct IRK among a set of IRK.

This mechanism is illustrated in Figure 8 below.

Figure 8 – Resolving private source addresses

3.5 Check Sum

The 3 byte BLE Check Sum is used to verify data integrity of received BLE radio telegrams.

It is calculated as CRC (cyclic redundancy check) of the BLE Header, Source Address and

Payload fields.

TCM 515B will discard received radio telegrams that do not pass the CRC check.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.6 Payload

The payload of data telegrams is up to 31 bytes long (depending on the size of the sensor

data) and consists of the following fields:

 Length (1 byte)

The Length field specifies the combined length of the following fields and depends on

the size of the Sensor Status field. The minimum length is 13 byte and the maxi-

mum length is 31 byte

 Type (1 byte)

The Type field identifies the data type used for this telegram. For TCM 515B data

telegrams, this field is always set to 0xFF to designate manufacturer-specific data

field

 Manufacturer ID (2 byte)

The Manufacturer ID field is used to identify the manufacturer of BLE devices based

on assigned numbers. EnOcean has been assigned 0x03DA as manufacturer ID code.

 Sequence Counter (4 byte)

The Sequence Counter is a continuously incrementing counter used for security

processing. It is initialized to 0 at the time of production and incremented for each

telegram (data telegram or commissioning telegram) sent.

 Sensor Data (variable size)

The Sensor Data field reports the measured values of the sensors. The encoding of

this field is described in chapter 3.7.

 Security Signature (4 byte)

The Security Signature is used to authenticate TCM 515B radio telegrams as de-

scribed in chapter 0

Figure 9 below illustrates the telegram payload structure.

Figure 9 – Telegram payload structure

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.7 Sensor status encoding

The Sensor Status field within the Payload data identifies the status of the connected sen-

sors. The Sensor Status field is composed of sub-fields (one per sensor attribute).

Each sub-field consists of two items:

 Sensor Data Descriptor

The descriptor identifies the type of the attribute and the size of the following data

field

 Sensor Data

The sensor data encodes the attribute data

Figure 10 below shows the structure of the sensor status field.

Figure 10 – Sensor Status field structure

3.7.1 Sensor Data Descriptor

The Sensor Data Descriptor describes type and size of the following sensor data field. It

explicitly specifies the size to ensure forward compatibility, i.e. to enable future receivers to

parse sensor telegrams containing unknown data types.

The Sensor Data Descriptor structure is shown in Figure 11 below.

Figure 11 – Sensor Data Descriptor field structure

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.7.2 Sensor Status

The Sensor Status field encodes the current status (last reported value) of a sensor.

As described above, the type of the sensor data is identified by the Data Type ID field and

its size is identified by the Data Size field of the preceding Sensor Data Descriptor.

Table 3 below shows the sensor status encoding used by TCM 515B.

Table 3 – Sensor status encoding

ID Type Size

[bytes]

signed Minimum Maximum Unit Encoding

(Input = x)

Measurement

too low

Measurement

Invalid

0x00 Temperature 2 yes -327.67 327.66 °C 100 * x 0x8000 0x7FFF

0x01 Voltage 2 yes -16 383.5 16 383.5 mV 2 * x 0x8000 0x7FFF

0x02 Battery level 1 no 0 126.5 % 2 * x 0xFF 0xFE

0x03 Current 2 yes -32 767 32 766

μ

A x 0x8000 0x7FFF

0x04 Illuminance

(wide angle)

2 no 0 65 533 lx x 0xFFFF 0xFFFE

0x05 Illuminance

(Narrow angle)

2 no 0 65 533 lx x 0xFFFF 0xFFFE

0x06 Relative humidity 1 no 0 126.5 % 2 * x 0xFF 0xFE

0x07 Pressure 2 yes -32 767 32 766 hPa x 0x8000 0x7FFF

0x08 Distance 2 no 0 ~1023.95 cm 64 * x 0xFFFF 0xFFFE

0x09 Gas concentration 2 no 0 32 766.5 ppm 2 * x 0xFFFF 0xFFFE

0x0A Acceleration 2 yes ~-16 ~16 G 2048 * x 0x8000 0x7FFF

ID Type Size

[bytes]

0x20 Occupancy 1 0x00:

Generic Error

0x01:

Not occupied

0x02:

Occupied

0x21 Smoke 1 0x00:

Generic error

0x01:

No smoke

0x02:

Smoke

(ion chamber)

0x01:

Up

0x02:

Right

0x05:

Up to right

0x06:

Right to down

0x09:

Up to left

0x0A:

Left to down

0x23 Open/closed 1 0x00:

Generic error

0x01:

Closed

0x02:

Open

0x3B Device descriptor Variable

0x3C Error report 1 0x00: No error

0x3D User data Variable

0x3E Commissioning 26 Commissioning telegram: 4 byte Sequence Counter + 6 byte Source Address + 16 byte Private Key

Other values: Application specific

All values: Application specific, Size defined by descriptor

Enumerations

System Messages

Enumerated values

0x08:

Left to up

0x07:

Down to left

0x00:

Generic error

0x03:

Standby

0x03:

Smoke

(opt. chamber)

0x03:

Down

0x0B:

Down to right

0x22 Mechanical handle 1

0x04:

Smoke

(both chambers)

0x04:

Left

0x0C:

Right to up

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.8 TCM 515B telegram authentication

TCM 515B implements telegram authentication to ensure that only telegrams from senders

using a previously exchanged security key will be accepted. Authentication relies on a 32

bit telegram signature which is calculated as shown in Figure 12 below and exchanged as

part of the radio telegram.

Figure 12 – Telegram authentication flow

Sequence counter, source address and the remaining telegram data together form the in-

put data for the signature algorithm. This algorithm uses AES128 encryption based on the

device-unique random security key to generate a 32 bit signature which will be transmitted

as part of the radio telegram.

The signature is therefore dependent both on the current value of the sequence counter,

the device source address and the telegram payload. Changing any of these three parame-

ters will therefore result in a different signature.

The receiver performs the same signature calculation based on sequence counter, source

address and the remaining telegram data of the received telegram using the security key it

received from TCM 515B during commissioning.

The receiver then compares the signature reported as part of the telegram with the signa-

ture it has calculated. If these two signatures match then the following statements are

true:

 Sender (TCM 515B) and receiver use the same security key

 The message content (address, sequence counter, data) has not been modified

At this point, the receiver has validated that the message originates from a trusted sender

(as identified by its security key) and that its content is valid.

In order to avoid message replay (capture and retransmission of a valid message), it is

required that the receiver tracks the value of the sequence counter used by TCM 515B and

only accepts messages with higher sequence counter values (i.e. not accepts equal or lower

sequence counter values for subsequent telegrams).

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

3.9 ESP3 Interface

TCM 515B provides a bi-directional UART interface for communicating with the external

host. The default baud rate of this interface is 57600 bps. If the TURBO pin is set to active

low then the baud rate is increased to 460.800 bps.

3.9.1 ESP3 Data Format

TCM 515B communicate with external hosts using EnOcean Serial Protocol version 3 (ESP3)

with EnOcean 2.4 GHz extensions.

Please consult the detailed ESP3 specification at https://www.enocean.com/esp.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

4 DEVICE INTEGRATION

TCM 515B is designed for integration onto a host PCB. Detailed Gerber data of the device

footprint is available from EnOcean upon request.

4.1 Recommended PCB Footprint

Figure 13 below shows the recommended PCB footprint for TCM 515B.

Figure 13 – Recommended PCB footprint

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

4.2 Antenna options

This chapter outlines options for antenna that can be used with TCM 515B. Note that this

chapter is for guidance purposes only, please consult with an authorized certification body

for specific information.

4.2.1 General antenna requirements for TCM 515B

Antenna used TCM 515B shall always meet the requirements listed in Fehler! Verweis-

quelle konnte nicht gefunden werden. below.

Frequency band 2.4 GHz ISM Antenna must be suited for this band

Antenna type Passive Mandatory for radio approval

Impedance ~50 Ohm Mandatory for radio approval

Maximum gain ≤ 5 dBi Mandatory for radio approval

Table 4 – General Antenna requirements

4.2.2 Specific antenna requirements for European Union

TCM 515B can be used with the antennas described in subsequent chapters.

See chapter 6 for additional important remarks regarding RED certification.

4.2.3 Specific antenna requirements for US / Canada

The TCM 515B has been tested and certified according to FCC regulation with a number of

different antennas as described below.

4.2.4 Antenna Description

4.2.4.1 Whip Antenna

TCM 515B modules can be used with a whip antenna meeting key parameters shown in

Fehler! Verweisquelle konnte nicht gefunden werden. below.

USER MANUAL

TCM 515B – 2.4 GHZ

BLUETOOTH LOW ENERGY

Figure 14 –

Whip antenna with parameters for 2.4 GHz

The whip antenna has to meet the following parameters:



Antenna length (L): 30 mm wire, connect to RF_WHIP



Minimum GND plane: 15 mm x 15 mm



Minimum distance space: 10 mm

The referen

ce layout for this antenna is sho

green dotted rectangle and the minimum ground plane has to be implemented exactly as

shown in order to use EnOcean modular approval for US / Canada.

Figure 15 –

Whip antenna

Additionally, the transmission line between TCM 515B and the whip antenna has to be i

plemented as specified in

Figure

/ Canada.

BLUETOOTH LOW ENERGY

(BLE)

Transceiver

F-710-017, V1.0 TCM 515B

User Manual | v

Whip antenna with parameters for 2.4 GHz

The whip antenna has to meet the following parameters:

Antenna length (L): 30 mm wire, connect to RF_WHIP

Minimum GND plane: 15 mm x 15 mm

Minimum distance space: 10 mm

ce layout for this antenna is sho

wn in Figure 15

below. Th

green dotted rectangle and the minimum ground plane has to be implemented exactly as

shown in order to use EnOcean modular approval for US / Canada.

Whip antenna

reference layout

Additionally, the transmission line between TCM 515B and the whip antenna has to be i

Figure

16 below

in order to use EnOcean modular approval for US

Transceiver

User Manual | v

0.5 | October 2017 | Page 22/37

Whip antenna with parameters for 2.4 GHz

below. Th

e area within the

green dotted rectangle and the minimum ground plane has to be implemented exactly as

Additionally, the transmission line between TCM 515B and the whip antenna has to be i

m-

in order to use EnOcean modular approval for US

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

w = 1.00mm

s = 0.15mm

h =

0.90…2.00m

m

(see

Note 1)

Typical line

impedance

on

FR4=44…56

Ω

Return

loss>=24dB

Figure 16 – Transmission line specification

Note (1): Coplanar waveguide modes are dominant in this configuration. Thus thickness of

substrate can be changed with the given limits.

4.2.4.2 Meandered PCB Antenna

TCM 515B has been certified for use with a meandered PCB antenna provided that the fol-

lowing layout guidelines are met:

 Matching circuit values of the modular approval may not be changed, use matching

circuit components as specified in Table 5

 Shape according to reference layout in Figure 17

 Minimum GND plane: 40 mm x 18 mm

 Connect GND planes using multiple via as shown in Figure 17

 Minimum distance space: 10 mm

 PCB Stack of the modular approval may not be changed,

use PCB stack as specified in Figure 18 – PCB stack specification for meandered PCB

antenna

Side View

Top View

Grounded Coplanar Waveguide (GCPW)

Line heigth: h

line gap: s

line width: w

Line length: l

GND

optional layer(s)

other signals (optional)

GND vias

USER MANUAL

TCM 515B – 2.4 GHZ

BLUETOOTH LOW ENERGY

Figure 17 below shows

the dimensions of the meandered PCB antenna, the matching circuit

and the area important for US / Canada modular approval (marked in green).

Figure 17 –

Reference layout for meandered PCB antenna

Figure 18 –

PCB stack specification for meandered PCB antenna

Table 5 below lists the

parameters of the

strate with 1.0 mm height.

It is mandatory to not change the designator values and su

strate height for compliance with

Designator

Value

C8 1.0pF

R9 6.8nH

C9 ---

Table 5 – Parameters

of the matching circuit

BLUETOOTH LOW ENERGY

(BLE)

Transceiver

F-710-017, V1.0 TCM 515B

User Manual | v

the dimensions of the meandered PCB antenna, the matching circuit

and the area important for US / Canada modular approval (marked in green).

Reference layout for meandered PCB antenna

PCB stack specification for meandered PCB antenna

parameters of the

matching circuit

components

It is mandatory to not change the designator values and su

strate height for compliance with US / Canada modular approval usage.

Notes

Use Murata GRM1555 series or similar

Use Würth WE-

KI series, Murata LQW series or similar

Not assembled

of the matching circuit

for 1.0 mm substrate height

Transceiver

User Manual | v

0.5 | October 2017 | Page 24/37

the dimensions of the meandered PCB antenna, the matching circuit

and the area important for US / Canada modular approval (marked in green).

h = 1.00mm

substrate: FR4

components

using a FR4 sub-

It is mandatory to not change the designator values and su

b-

US / Canada modular approval usage.

KI series, Murata LQW series or similar

for 1.0 mm substrate height

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

4.2.4.3 Dipole antenna requirements

The TCM 515B has been certified for use with the dipole antenna model S151AH-2450S

from Nearson or other antennas with similar parameters provided that:

 The RF connector is a non-standard connector such as a RP-SMA-Female from John-

son/Cinch Connectivity Solutions (142-4701-801)

In addition, the following layout guidelines have to be met:

 The bottom GND plane is implemented below the RF transmission line section of the

circuit to form a grounded coplanar waveguide (Figure 20 – Detailed description

of RF transmission line)

 The ground planes have to be connected using multiple via along RF transmission

line as shown in Figure 19 and Figure 20

Table 6 at the end of this section lists dipole antennas that can be used optional instead of

S151AH-2450S antenna stated previously as they are of the same kind with less or equal

gain.

Figure 19 below shows the layout used for compliance tests. The section of the layout lo-

cated within the green frame has to remain unchanged for US / Canada modular approval

usage.

Figure 19 – Reference layout for dipole antenna

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

The transmission line between TCM 515B and the antenna has to be implemented as shown

in the following picture (Figure 20).

w =1.00mm

s = 0.15mm

h

=0.90…2.00m

m

(see Note

1)

Typical line

impedance on

FR4=44…56Ω

Return

loss>=24dB

Figure 20 – Detailed description of RF transmission line

Note (1): Coplanar waveguide modes are dominant in this configuration. Thus thickness of

substrate can be changed with the given limits.

Figure 21 below shows dipole antenna model S151AH-2450S from Nearson that was used

for certification tests.

Figure 21 – dipole antenna model S151AH-2450S

Side View

Top View

Grounded Coplanar Waveguide (GCPW)

Line heigth: h

line gap: s

line width: w

Line length: l

GND GND

optional layer(s)

other signals (optional)

GND vias

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

Figure 22 – RP-SMA-Female

Figure 22 above displays the RP-SMA-Female (142-4701-801) from Chinch Connectivity

Solutions as an example for a non-standard RF connector required for US / Canada modular

approval usage.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

Table 6 gives a list of examples of dipole antennas that could be used with TCM 5151B un-

der US / Canada modular approval.

Manufacturer Manufacturer Part Number Gain Antenna Type

Nearson Inc.

1

S151AH-2450S 5dBi Whip (Dipole), Tilt

Nearson Inc. S131AH-2450S 5dBi Whip (Dipole), Tilt

Nearson Inc. S181AH-2450S 2dBi Whip (Dipole), Tilt

ATOP Technologies ANT-WS-AB-RM-05-200 5dBi Whip (Dipole), Straight

ATOP Technologies ANT-WS-AB-RM-05-180 5dBi Whip (Dipole), Straight

Digi International A24-HASM-525 2.1dBi

Whip (Dipole), Tilt

Digi International A24-HASM-450 2.1dBi

Whip (Dipole), Tilt

Digi International DG-ANT-20DP-BG 2dBi Whip (Dipole), Tilt

Digi International DC-ANT-24DP 1.8dBi

Whip (Dipole), Tilt

Digi International DC-ANT-24DT 1.8dBi

Whip (Dipole), Straight

Honeywell WAN01RSP 2.2dBi

Whip (Dipole), Straight

Honeywell WAN02RSP 2.2dBi

Whip (Dipole), Tilt

Laird Technologies IAS S2403BH36RSM 3dBi Whip (Dipole), Straight

Laird Technologies IAS EXR2400RSM 3dBi Whip (Dipole), Tilt

Laird Technologies IAS MAF94046 1.3dBi

Whip (Dipole), Tilt

Laird Technologies IAS MAF94028 1.3dBi

Whip (Dipole), Tilt

Laird Technologies IAS MAF94112 1.5dBi

Whip (Dipole), Tilt

Linx Technologies Inc. ANT-2.4-CW-HW 3.2dBi

Whip (Dipole), Straight

Linx Technologies Inc. ANT-2.4-CW-RCT-RP 2.2dBi

Whip (Dipole), Tilt

Linx Technologies Inc. ANT-2.4-CW-HWR-RPS 3.2dBi

Whip (Dipole), Tilt

Linx Technologies Inc. ANT-2.4-CW-CT-RPS 2.8dBi

Whip (Dipole), Straight

LSR 001-0010 2dBi Whip (Dipole), Tilt

LSR 001-0001 2dBi Whip (Dipole), Tilt

Microchip Technology RN-SMA4-RP 2.2dBi

Whip (Dipole), Tilt

Proant AB 333 3dBi Whip (Dipole), Tilt

Proant AB 348 3dBi Whip (Dipole), Straight

Pulse Electronics W1037 3.2dBi

Whip (Dipole), Tilt

Pulse Electronics W1027 3.2dBi

Whip (Dipole), Tilt

Pulse Electronics W1030 2dBi Whip (Dipole), Tilt

Pulse Electronics W5010 1.5dBi

Whip (Dipole), Straight

Pulse Electronics W5001 1.5dBi

Whip (Dipole), Right Angle

Red Lion Controls ANT-GW11A153 2.3dBi

Whip (Dipole), Tilt

Siretta Ltd DELTA6B/X/SMAM/RP/S/11 5dBi Whip (Dipole), Tilt

Siretta Ltd DELTA10A/X/SMAM/RP/S/17

3dBi Whip (Dipole), Straight

Taoglas Limited GW.11.A153 2.3dBi

Whip (Dipole), Tilt

Taoglas Limited GW.26.0151 1.8dBi

Whip (Dipole), Straight

Walsin Technology RFDPA151300SBAB8G1 3dBi Whip (Dipole), Tilt

Walsin Technology RFDPA171300SBAB8G1 3dBi Whip (Dipole), Tilt

Walsin Technology RFDPA870900SBAB8G1 2dBi Whip (Dipole), Tilt

Table 6 – Dipole antenna options

1 antenna tested for FCC and IC certification

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

4.3 Soldering information

TCM 515B has to be soldered according to IPC/JEDEC J-STD-020C standard as outlined in

Figure 23 below.

Figure 23 – Recommended temperature profile

4.4 Device handling instructions

TCM 515B shall be handled according to Moisture Sensitivity Level MSL 3. TCM 515B may

be soldered only once, since one time is already consumed at production of the module

itself.

Once the dry pack bag is opened, the desired quantity of units should be removed and the

bag resealed within two hours. If the bag is left open longer than 30 minutes the desiccant

should be replaced with dry desiccant. If devices have exceeded the specified floor life time

of 168 h, they may be baked according IPC/JEDEC J-STD-033B at max. 90 °C for less than

60 h.

Devices packaged in moisture-proof packaging should be stored in ambient conditions not

exceeding temperatures of 40 °C or humidity levels of 90% r.H.

TCM 515B modules have to be soldered within 6 months after delivery!

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

In general we recommend a no clean flux process. If washing is needed, then TCM 515B

radio modules have a shield cover with small openings at the top of the edges.

It is very important to mount the modules in a top down position during the drying process

as this will allow getting the aggregated washing fluid removed properly from within the

shield cover area.

To prevent damage, modules have to be checked for any remaining fluid after the drying.

4.5 Device operation instructions

TCM 515B shall only be operated while assembled onto a PCB that is integrated into a suit-

able product housing.

TCM 515B shall only be supplied using “Limited Power Sources” compliant with EN 62368-1

clause 6.2.2.4 and a maximum output power of 15W (PS1).

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

4.6 Tape & Reel specification

TCM 515B is delivered in Tape & Reel packaging with 250 units per reel. Figure 24 below

illustrates the dimensions.

Figure 24 – Tape & Reel dimensions of TCM 515B

Figure 25 below shows the positioning of TCM 515B in the Tape & Reel packaging.

Figure 25 – Position of TCM 515B in the reel

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

5 APPLICATION INFORMATION

5.1 Transmission range

The main factors that influence the system transmission range are:

- Type and location of the antennas of receiver and transmitter

- Type of terrain and degree of obstruction of the link path

- Sources of interference affecting the receiver

- “Dead spots” caused by signal reflections from nearby conductive objects.

Since the expected transmission range strongly depends on this system conditions, range

tests should always be performed to determine the reliably achievable range under the

given conditions.

The following figures should be treated as a rough guide only:

- Line-of-sight connections

Typically 10 m range in corridors, up to 50 m in halls

- Plasterboard walls / dry wood

Typically 10 m range, through max. 2 walls

- Ferro concrete walls / ceilings

Maximum 1 wall or ceiling, depending on thickness and material

- Fire-safety walls, elevator shafts, staircases and similar areas should be considered

as shielded

The angle at which the transmitted signal hits the wall is very important. The effective wall

thickness – and with it the signal attenuation – varies according to this angle. Signals

should be transmitted as directly as possible through the wall. Wall niches should be

avoided.

Other factors restricting transmission range include:

- Switch mounting on metal surfaces (up to 30% loss of transmission range)

- Hollow lightweight walls filled with insulating wool on metal foil

- False ceilings with panels of metal or carbon fibre

- Lead glass or glass with metal coating, steel furniture

The distance between the receiver and other transmitting devices such as computers, audio

and video equipment that also emit high-frequency signals should be at least 0.5 m.

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

6 REGULATORY INFORMATION

TCM 515B has been tested according to CE regulation. Changes or modifications not ex-

pressly approved by EnOcean could void compliance with RED requirements.

6.1 CE (RED) for European Union

According to laws of the member states of the European Union OEM manufacturer or dis-

tributor are responsible for the conformity of the product. Note the following requirements

for CE certification:

The existing R&TTE directive has been replaced by RED (radio equipment directive) since

13th of June 2016.

OEM manufacturers or distributors which sell this component as a product to his (final) cus-

tomers have to fulfill all requirements of the radio equipment directive (RED).

RED contains at least following requirements for OEM manufacturers or distributors:

 Provide product branding (on the product) clearly identifying company name or

brand and product name as well as type, charge or serial number for market surveil-

lance

 Include (with the product) documentation containing full postal address of the man-

ufacturer as well as radio frequency band and max. transmitting power

 Include (with the product) user manual, safety information and a declaration of con-

formity for the final product in local language

 Provide product development and test documentation upon request

 OEM has to fulfill all additional requirements according to RED such as market sur-

veillance or 10 years record retention.

For details and national translations, please see:

http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex:32014L0053

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

6.2 FCC (United States) Certificate

< to be inserted>

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

6.2.1 FCC (United States) regulatory 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, and

(2) this device must accept any interference received, including interference that may

cause undesired operation.

6.2.2 FCC (United States) labeling requirements

This module is labeled with its own FCC ID number, and, if the FCC ID is not visible when

this module is installed inside another device, then the outside of this device into which the

module is installed must also display a label referring to this enclosed module.

This exterior label can use wording such as the following:

"Contains Transmitter Module FCC ID: SVZ-TCM515B"

Or alternatively:

"Contains FCC ID: SVZ-TCM515B"

Any similar wording that expresses the same meaning may be used. Figure 26 below shows

an example of such label.

Figure 26 – Label example

6.2.3 FCC (United States) RF exposure statement

This module complies with radiofrequency radiation exposure limits according to 47 CFR, §

2.1093, applying general RF exclusion guidance KDB 447498.

Calculation of conducted output power:

conducted output power: 4.5 dBm

duty cycle correction factor: -14 dBm

time averaged output power: -9.5 dBm

time averaged output power: 0.1 mW

FCC output power exception limit: . ( )∗ 

√(())

Frequency f: 2.4 GHz

Limit: 10 mW

Contains FCC ID: SVZ-TCM515B

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

6.3 ISED (Industry Canada) Technical Acceptance Certificate

< to be inserted>

USER MANUAL

TCM 515B – 2.4 GHZ BLUETOOTH LOW ENERGY (BLE) Transceiver

6.3.1 ISED (Industry Canada) regulatory statement

This device complies with Industry Canada license-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 unde-

sired 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, et

(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le

brouillage est susceptible d'en compromettre le fonctionnement.”

6.3.2 ISED (Industry Canada) RF exposure statement

This module complies with the Exemption Limits for Routine Evaluation of radiofrequency

radiation exposure according to RSS-102, 2.5.1.

Calculation of e.i.r.p. (effective isotropic radiated power):

conducted output power: 4.5 dBm

maximum gain of antenna: 5.0 dBi

maximum e.i.r.p.: 9.5 dBm

duty cycle correction factor -14 dBm

time averaged e.i.r.p -4.5 dBm

time averaged e.i.r.p 0.4 mW

ISED Exeption limit for time-averaged e.i.r.p output power

Frequency f: 2450 MHz

Limit 4 mW

Source: https://www.ic.gc.ca/eic/site/smt-gst.nsf/vwapj/rss-102-issue5.pdf/$file/rss-102-issue5.pdf

EnOcean TCM515B 2.4 GHz Bluetooth Low Energy (BLE) Transceiver User Manual

EnOcean GmbH 2.4 GHz Bluetooth Low Energy (BLE) Transceiver

User Manual

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