Dolphin Tcm 515z User manual

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 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!

11 September 2017

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

REVISION HISTORY

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

Version

Author

Reviewer

Date

Major Changes

1.0

MKA

MK, MF

01.03.2016

Initial Release

1.1

MKA

01.05.2016

Added protocol description, changed location of

TURBO Pin

1.2

MKA

19.07.2016

Added reflow profile

1.3

MKA

23.01.2017

Added list of supported ESP3 commands and

minimum values for sensitivity and output power

1.4

MKA

13.02.2017

Added additional ESP3 interface speeds, added

caution note regarding switching to TURBO mode

via ESP3 command

1.5

MKA

12.06.2017

Added information about antenna options for US

(FCC regulation)

1.6

MKA

11.09.2017

Added information about FCC labelling require-

ments, RF exposure and distance requirements

FCC and ISED certificates

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 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

TABLE OF CONTENT

1GENERAL 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

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

2.1 TCM 515Z Device Interface.............................................................................7

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

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

2.3 Radio Functionality ........................................................................................9

2.3.1 Supported Radio Channels ......................................................................9

2.3.2 Duty cycle limit .....................................................................................9

2.4 ESP3 Interface............................................................................................ 10

2.4.1 ESP3 Data Format................................................................................10

2.4.2 Supported ESP3 Commands.................................................................. 10

3Antenna options..........................................................................................11

3.1 General antenna requirements for TCM 515Z..................................................11

3.2 Specific antenna requirements for European Union ..........................................11

3.3 Specific antenna requirements for US / Canada............................................... 11

3.4 Antenna description.....................................................................................12

3.4.1 Whip antenna......................................................................................12

3.4.2 Meandered PCB antenna.......................................................................13

3.4.3 Dipole antenna requirements ................................................................15

3.4.4 Dipole antenna options.........................................................................18

4Device Integration.......................................................................................19

4.1 Recommended PCB Footprint........................................................................19

4.2 Soldering information................................................................................... 20

4.3 Device handling instructions .........................................................................21

4.4 Tape & Reel specification..............................................................................22

4.5 Power supply requirements...........................................................................23

5APPLICATION INFORMATION ........................................................................24

5.1 Transmission range ..................................................................................... 24

6REGULATORY INFORMATION.........................................................................25

6.1 CE (RED) for European Union........................................................................25

6.2 FCC (United States) Certificate...................................................................... 26

6.2.1 FCC (United States) regulatory statement...............................................27

6.2.2 FCC (United States) labeling requirements..............................................27

6.2.3 FCC (United States) RF exposure statement............................................27

6.3 ISED (Industry Canada) Technical Acceptance Certificate .................................28

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

6.3.1 ISED (Industry Canada) regulatory statement.........................................29

6.3.2 IC (Industry Canada) RF exposure statement..........................................29

Appendix A IEEE 802.15.4 Frame Structure.............................................................30

A.1 IEEE 802.15.4 High Level Frame Structure .....................................................30

A.2 PHY Header ................................................................................................ 31

A.2.1 Length of Frame values used by PTM 215ZE and PTM 535Z ..........................31

A.3 MAC Header................................................................................................32

A.4 MAC Payload...............................................................................................32

A.5 MAC Trailer.................................................................................................32

Appendix B MAC Payload Structure......................................................................... 33

B.1 Secure data telegram format (with authentication)..........................................34

B.2 Secure commissioning telegram format (with authentication) ...........................35

B.3 Standard data telegram format (without authentication) ..................................36

B.4Standard commissioning telegram (without authentication)..............................37

Appendix C ESP3 Interface Format .........................................................................38

C.1 Packet Type 0x10: IEEE 802.15.4 Raw Packet.................................................38

C.1.1 ESP3 packet structure for IEEE 802.15.4 Raw Packets..................................38

C.1.2 RESPONSE for IEEE 802.15.4 Raw Packets ................................................. 39

C.1.3 Failure Indication for IEEE 802.15.4 Raw Packet..........................................40

C.2 Packet Type 0x11: IEEE 802.15.4 COMMAND.................................................. 41

C.2.1 Packet structure for IEEE 802.15.4 COMMAND ............................................41

C.2.2 List of supported commands .....................................................................41

C.2.3 SET_CHANNEL Command......................................................................... 42

C.2.4 RESPONSE for SET_CHANNEL Command....................................................42

C.2.5 GET_CHANNEL Command.........................................................................43

C.2.6 RESPONSE for GET_CHANNEL Command....................................................43

C.3 Packet Type Common Command ...................................................................44

C.3.1 Command Code 0x24: CO_SET_BAUDRATE ................................................44

C.3.2 RESPONSE for CO_SET_BAUDRATE Command ............................................44

C.3.3 Command Code 0x25: CO_GET_FREQUENCY_INFO .....................................45

C.3.4 RESPONSE for CO_GET_FREQUENCY_INFO Command..................................45

C.3.5 Command Code 37: CO_GET_STEPCODE....................................................46

C.3.6 RESPONSE for CO_GET_STEPCODE Command ............................................ 46

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

1GENERAL DESCRIPTION

1.1 Basic functionality

TCM 515Z enables the realization of line-powered actuators, controllers and gateways

communicating based on the 2.4 GHz IEEE 802.15.4 radio standard. It provides a transpar-

ent radio link between EnOcean 2.4 GHz devices and an external host connected via the

standardized ESP3 interface (EnOcean Serial Protocol, version 3).

TCM 515Z receives and transmits radio telegrams based on a 50 Ohm or whip antenna

connected to the host PCB. It forwards received 2.4 GHz IEEE 802.15.4 radio telegrams

to an external host processor or host PC via the ESP3 interface.

IEEE 802.15.4 messages received from an external host via the ESP3 interface will be

transmitted by TCM 515Z as 2.4 GHz radio telegrams.

TCM 515Z is implemented as 31 pin reflow-solderable module with optimized form factor

for size constrained applications.

Figure 1 below shows TCM 515Z.

Figure 1 – TCM 515Z outline

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

1.2 Technical data

Antenna

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

Supported Radio Frequency Range

Radio channel 11 … 26 according to IEEE 802.15.4 standard

Default Radio Channel

IEEE 802.15.4 radio channel 11

Receiver Sensitivity (at 25°C)(1)

Minimum: -92dBm / Typical: –95 dBm

Transmit Power (at 25°C)

Minimum: 0dBm / Typical: +2 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)

Transmit: 20mA, Receive: 15 mA

Radio Regulation

R&TTE (Europe), FCC (US), IC (Canada)

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 515Z

S3073-K515

2.4 GHz (IEEE 802.15.4)

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

2FUNCTIONAL INFORMATION

2.1 TCM 515Z Device Interface

TCM 515Z 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 515Z device interface

Table 1 below summarizes the signal assignment.

NAME

GND

ANTENNA (50 Ohms)

GND

UART_RX (Input)

TURBO

UART_TX (Output)

VDD

Table 1 - TCM 5151Z device interface pin assignment

Signals marked with “NC” are reserved for production test and future device variants and

must not be connected in the design.

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

2.1.1 Signal Description

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

tolerance of no more than +-10%.

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

TENNA input (Pin 2).

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

terface based on the signals UART_TX (Pin 21, direction from TCM 515Z 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 CO_SET_BAUDRATE command as shown in Table 15.

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.

2.2 High-level operation principle

In receive mode, TCM 515Z forwards the content of received IEEE 802.15.4 radio telegrams

(which pass frame check sum validation) unmodified to the external host via the ESP3 in-

terface.

The forwarded frame starts with the Length field of the IEEE 802.15.4 PHY Header, contin-

ues with the MAC Header and ends with the last Byte of the MAC Payload. The frame check

sum (MAC Trailer) will not be forwarded to the host.

In transmit mode, TCM 515Z receives from the external host the precomputed message

payload starting with the Length field of the IEEE 802.15.4 PHY Header, continuing with the

MAC Header and ending with the last Byte of the MAC Payload.

TCM 515Z then calculates the frame check sum (MAC Trailer) and appends it to the mes-

sage. The full frame (including the Preamble and Start of Frame fields) will then be trans-

mitted as IEEE 802.15.4 radio telegram (TX mode).

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

2.3 Radio Functionality

2.3.1 Supported Radio Channels

TCM 515Z support all radio channels of the IEEE 802.15.4 standard in the 2.4 GHz band.

The radio channel used by TCM 515Z can be set by an external host using the ESP3

SET_CHANNEL command as described in Appendix C.2.3.

The channel notation used by TCM 515Z follows IEEE 802.15.4 standard, i.e. channel 11 is

the first channel (lowest frequency) and channel 26 is the last channel (highest frequency).

Table 2 below shows the correspondence between channel ID and channel frequency.

Table 2 - Supported radio channels

2.3.2 Duty cycle limit

In order to ensure regulatory compliance in some markets, the transmission duty cycle of

TCM 515Z may not exceed 35%. An internal SW mechanism therefore monitors the duty

cycle and will temporarily reject requests for additional transmissions if this duty cycle is

exceeded (note: this is only possible if TURBO mode is used and the host continuously re-

quests transmission).

It is the responsibility of the end user to design the host system such that either such tem-

porary transmission suspension does not affect the intended application functionality or to

ensure that the transmission duty cycle requested by the host will not exceed 35%.

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

2.4 ESP3 Interface

TCM 515Z 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.

2.4.1 ESP3 Data Format

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

with EnOcean 2.4 GHz IEEE 802.15.4 extensions.

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

2.4.2 Supported ESP3 Commands

TCM 515Z supports the following ESP3 commands:

Packet Type 0x10: IEEE 802.15.4 Raw Packet

Packet Type 0x11: IEEE 802.15.4 COMMAND

oSET_CHANNEL

oGET_CHANNEL

Packet Type 0x05: Common Command

oCO_SET_BAUDRATE

oCO_GET_FREQUENCY_INFO

oCO_GET_STEPCODE

Please refer to Appendix C for a description of the supported commands.

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

3Antenna options

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

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

for specific information.

3.1 General antenna requirements for TCM 515Z

Antenna used with TCM 515Z shall always meet the requirements listed in Table 3 below.

Frequency Band

2.45GHz ISM

Antenna Type

Passive

Impedance

50Ω, VSWR≤3

Maximum Gain

≤6dBi

Table 3 – General antenna requirements

3.2 Specific antenna requirements for European Union

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

See chapter 6.1 for additional important remarks regarding RED certification.

3.3 Specific antenna requirements for US / Canada

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

different antennas as described below.

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

3.4 Antenna description

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

different antennas as described below.

3.4.1 Whip antenna

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

Figure 3 below.

Figure 3 – Whip antenna 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 reference layout for this antenna is shown in Figure 4 below. The area within the 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 4 – Whip antenna reference layout

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

Additionally, the transmission line between TCM 515Z and the whip antenna has to be im-

plemented as specified in Figure 5 below in order to use EnOcean modular approval for US

/ Canada.

w=1.00mm

s=0.15mm

h=0.90…2.00mm (See

Note 1)

Typical line impedance

on FR4=44…56Ω

Return loss>=24dB

Figure 5 – Transmission line specification

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

substrate can be changed with the given limits.

3.4.2 Meandered PCB antenna

TCM 515Z 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

Shape according to reference layout in Figure 6

Minimum GND plane: 40 mm x 18 mm

Connect GND planes using multiple via as shown in Figure 6

Minimum distance space: 10 mm

Matching circuit components as specified in Table 4

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

Figure 6 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 6 – Reference layout for meandered PCB antenna

Table 4 below lists the parameters of the matching circuit components. It is mandatory to

use them as specified for US / Canada modular approval usage.

Designator

Value

Notes

1.0pF

Use Murata GRM1555 series or similar

6.8nH

Use Würth WE-KI series, Murata LQW series or similar

---

Not assembled

Table 4 – Parameters of the matching circuit

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

3.4.3 Dipole antenna requirements

The TCM 515Z has been certified for use with the dipole antenna 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)

The pi low pass filter described in this section is used

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

The pi low pass filter is part of the modular approval and may not be changed

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

circuit to form a grounded coplanar waveguide (see Figure 8)

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

line as shown in Figure 7 and Figure 8

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

S151AH-2450S antenna stated previously as they are the same kind of antennas and have

the same or less gain.

Figure 7 below shows the layout that has been used. The section of the layout located with-

in the green frame has to remain unchanged for US / Canada modular approval usage.

Figure 7 – Reference layout for dipole antenna

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

Table 5 below lists the parameters of the components which have to be used for the pi low

pass filter.

Designator

Value

Notes

1.0pF

use Murata GRM1555 series or similar

1.0pF

use Murata GRM1555 series or similar

3.1nH

use Murata LQP15MN series or similar

Table 5 – Values of the pi low pass filter for the dipole antenna

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

in Figure 8 below.

w=1.00mm

s=0.15mm

h=0.90…2.00mm (See

Note 1)

Typical line impedance

on FR4=44…56Ω

Return loss>=24dB

Figure 8 – 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.

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

Figure 9 below shows S151AH-2450S from Nearson.

Figure 9 - S151AH-2450S

Figure 10 below shows the RP-SMA-Female (142-4701-801) from Chinch Connectivity Solu-

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

approval usage.

Figure 10 – RP-SMA-Female

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

3.4.4 Dipole antenna options

Table 6 below shows examples of dipole antennas that could be used with TCM 5151Z 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

1This antenna was tested for FCC and IC certification

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

4Device Integration

TCM 515Z 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 11 below shows the recommended PCB footprint for TCM 515Z.

Figure 11 – Recommended PCB footprint

USER MANUAL

TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver

4.2 Soldering information

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

Figure 12 below.

Figure 12 – Recommended temperature profile

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