The bq2022 is a 1K-bit serial EPROM containing a factory programmed unique 48-bit ID 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.
The bq2022 is a 1K-bit serial EPROM containing a factory-programmed unique 48-bit identification number, an 8-bit family code, and a 64-bit CRC generation circuit. It features a single-wire SDQ interface that requires only a data connection and ground return, making it ideal for battery pack configuration, inventory tracking, and security applications. The device is available in a 3-pin SOT23 package.
| Memory Size | 1024 bits |
|---|---|
| Identification Number | 48-bit |
| Family Code | 8-bit |
| CRC Generation | 64-bit |
| Operating Temperature | -20°C to 70°C |
| Supply Voltage | 2.65 V to 5.5 V |
| Supply Current | 20 µA |
| Package | 3-Pin SOT23 |
The device contains 1024 bits of One-Time Programmable (OTP) EPROM.
No, the device requires no standby power.
The default 8-bit family code is 09h.