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SI7015-A10 Datasheet, PDF (25/39 Pages) Silicon Laboratories – Excellent long term stability
5.2.3. Firmware Revision
The internal firmware revision can be read with the following I2C transaction:
S
Slave
WA
Address
0x84
A 0xB8 A S
Slave
Address
R A FWREV A NA P
The values in this field are encoded as follows:
0xFF = Firmware revision 1.0
Si7015-A10
Rev. 1.0
25