The BQ2022A is a 1-Kbit 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.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
---|---|---|
BQ2022A | SOT-23 (3) | 2.92 mm × 1.30 mm |
TO-92 (3) | 4.30 mm × 4.30 mm |
Changes from Revision E (March 2016) to Revision F (January 2022)
Changes from Revision D (December 2014) to Revision E (February 2016)
PIN | TYPE | DESCRIPTION | ||
---|---|---|---|---|
NAME | SOT-23 | TO-92 | ||
SDQ | 1 | 2 | I | Data |
VSS | 2, 3 | 1 | — | Ground. Both pins should be connected to system ground. |
NC | — | 3 | — | No connection. This pin should be connected to system ground or left floating. |