STC3100

Functional description

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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.