Most of the Ikea Tradfri products contain a generic Zigbee Light Link (ZLL) module. Here is a teardown of that module (ICC-1, D-Poly_4B V2.0).

ICC-1 module


IEEE 802.15.4 RF transceiver with EFR32 Blue Gecko Bluetooth® Low Energy SoC
Module size: 18.0 x 24.5 mm
Supports Zigbee and Bluetooth Low Energy (BLE) and Thread.

Top side

Bottom side mirrored

Pin descriptions



Sadly the connections to the Flash chip are not exposed outside the module. I will try to find out how I can get to that easily. Is the firmware in the Flash of the SoC or is it stored in the external Flash . .. Would be nice if it is external so I can repurpose the tradfri modules for some other purpose. Also I want to find out where the serial (if it even exists) is stored. All devices need to keep their unique identification.

Pin ID (EFR32 pins) Description
01 GND
02 PB15
03 PB14
04 PC10
05 PC11 Present at 2 locations on PCB
06 PF0
07 PF1
08 PF2
09 PF3
10 RESETn
11 VDD PAVDD, IOVDD,
VREGVDD, VREGSW, VREGVSS
12 GND
13 PB13
14 PB12
15 PA1
16 PA0
17 PC11 Present at 2 locations on PCB

Operating conditions


Keep power supply above 1.85V (min 1.62V, max 3.35V). When powering from a coin cell, decouple the device between 20 and 200 uF.

EFR32 markings:
M: Family code: M
G: Gecko
P: Performance Grade: P
1: Feature code: 1
3: TRX code: TXRX
2: Band: 2.4 GHz
I: TemperatureGrade: -40 to 125 Degree

Ads by Google



Absolute maximum ratings


Information from EFR32 datasheet, the major active component on the board.

Parameter Symbol Test condition Min Typ Max Unit
Storage temperature range TSTG
-50
150
°C
Voltage on any supply pin VDDMAX
-0.3
3.8
V
Total current into VDD power lines IVDDMAX Source
200
mA
Total current into VSS ground lines IVSSMAX Source
200
mA
Current per I/O pin IIOMAX Sink or Source
50
mA
Current for all I/O pins IIOALLMAX Sink or Source
200
mA
Junction temperature TJ I grade devices
-40
125
°C

This slideshow requires JavaScript.

Bottom side with printing readable

Ads by Google



Disclaimer


This page and its content is not affiliated with IKEA of Sweden AB.

The purpose of this project is to learn and improve using reverse engineering techniques. Use this information on your own risk.

Leave a Reply