The bq2022A is a 1K-bit serial EPROM containing a factory-programmed, unique 48-bit
identification number, 8-bit CRC generation, and the 8-bit family code (09h). A 64-bit status
register controls write protection and page redirection.
The bq2022A SDQ™ interface requires only a single
connection and a ground return. The DATA pin is also the sole power source for the bq2022A.
The small surface-mount package options saves printed-circuit-board space, while the low
cost makes it ideal for applications such as battery pack configuration parameters, record
maintenance, asset tracking, product-revision status, and access-code security.