STC3100 Datasheet, PDF (11/21 Pages) STMicroelectronics – Battery monitor IC with Coulomb counter/gas gauge

STC3100
Functional description
7.5
Unique device ID
The STC3100 provides a means to identify the battery pack or the subsystem. Each device
has its own unique 8-byte ID made of an 8-bit part ID (value = 10h for the STC3100), a
48-bit random unique ID and an 8-bit CRC.
The CRC-8 is calculated according to bytes REG_ID0 to REG_ID6 using the "x8 + x2 + x +
1" polynomial with a zero initial value.
Since the device ID is downloaded from the ROM at power-up and is subsequently kept in
read-only RAM locations together with the general-purpose RAM registers, the device ID
can also be used as an indicator of the RAM integrity.
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