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1K-Bit Serial EPROM with SDQ Interface (Rev. F)
Texas Instruments
Description
The bq2022 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 bq2022 SDQ™ interface (TI's proprietary serial communications protocol) requires only a single connection and a ground return. The DATA pin is also the sole power source for the bq2022. The bus architecture allows multiple SDQ devices to be connected to a single host. 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.
Features
1024 bits of One-Time Programmable (OTP) EPROM For Storage Of User-Programmable Configuration DataFactory-Programmed Unique 64-Bit Identification Number Bus-Interface Architecture Allowing Multiple bq2022s Attached to a Single Host Single-Wire Interface to Reduce Circuit Board RoutingSynchronous Communication Reduces Host Interrupt Overhead15KV HBM ESD ComplianceNo Standby Power RequiredAvailable in a 3-Pin SOT23 Package and TO-92 PackageAPPLICATIONSSecurity EncodingInventory TrackingProduct-Revision MaintenanceBattery-Pack Identification SDQ is a trademark of Texas Instruments.
Related Datasheets
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