BQ2022A

BQ2022A SLUS724F – SEPTEMBER 2006 – REVISED JANUARY 2022 BQ2022A 1-Kbit Serial EPROM with SDQ Interface 1 Features 1024 bits of one-time programmable (OTP) EPROM for storage of user-programmable configuration data Factory-programmed unique 64-bit identification number Single-wire interface to reduce circuit board routing Synchronous communication reduces host interrupt overhead 15-KV IEC 61000-4-2 ESD compliance on data pin No standby power required Available in a 3-pin SOT-23 package and TO-92 package 2 Applications Security encoding Inventory tracking Product-revision maintenance Battery-pack identification SPACER SPACER 3 Description 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. Device Information PART NUMBER PACKAGE(1) BODY SIZE (NOM) BQ2022A SOT-23 (3) TO-92 (3) 2.92 mm × 1.30 mm 4.30 mm × 4.30 mm (1) For all available packages, see the orderable addendum a...