SI7050-A20 Datasheet, PDF (16/26 Pages) Silicon Laboratories – IC TEMPERATURE SENSORS

Si7050/3/4/5-A20
5.4. Firmware Revision
The internal firmware revision can be read with the following I²C transaction:
Slave
S
W
A
0x84
A
Address
0xB8
Slave
A
S
Address
RA
FWREV
The values in this field are encoded as follows:
0xFF = Firmware version 1.0
0x20 = Firmware version 2.0
A NA P
16
Rev. 1.0