JetHome ZB4C Zigbee Module (EFR32MG21)

The JetHome ZB4C module is designed to function as a coordinator or Zigbee end device within a Smart Home controller with the appropriate software installed and configured.

The module is based on a modern wireless microcontroller for the range of 2.4 GHz Silicon Labs EFR32MG21A020F1024IM32 and features high performance, increased transmitter output power and compact size.

The module is based on the circuitry of the debug board Silabs EFR32xG21 (BRD4180B) based on the EFR32MG21 chip:

Technical Specifications

  • The *80Mhz *Arm® Cortex®-M33 processor.

  • Flash 1024KB.

  • SRAM 96KB.

  • Transmitter output power up to +20 dBm.

  • Power supply voltage 3.3V.

  • Current consumption in active mode is less than 200 mA.

  • Module dimensions: 28 x 18 mm.

Module pin assignment

The module is in the format of a unified JetHome wireless module of size 28 x 18 mm with contacts located on the perimeter of the module.

Module pin assignment (top view):

../../_images/zb4c_module_pinout.png

Module output

Destination

Microcontroller output

1

SWCLK

PA01 (18)

2

SWDIO

PA02 (19)

3

SWO

PA03 (20)

4

PA00

PA00 (17)

5

PD02

PD02 (30)

6

PD03

PD03 (29)

7

PD04

PD04 (28)

8

PC04

PC04 (5)

9

GND

10

NC

11

NC

12

NC

13

+3.3V

14

GND

15

RESET

RESET (9)

16

PA6/RX

PA06 (23)

17

PA5/TX

PA05 (22)

18

PA4/CTS

PA04 (21)

19

PC1/RTS

PC01 (2)

20

PB0/BOOT

PB00 (16)

21

GND

22

ANTENNA

23

GND

Software

Supported firmware

Module flashing procedure

Limitations

Warning

  • The device is shipped and supported with coordinator firmware only.

  • You are responsible for using third-party firmware, including router firmware.