The 24AA02/24LC02B is a 2 Kbit serial EEPROM organized as a single 256‑byte block with a 2‑wire I²C‑compatible interface. It operates from 1.8 V to 5.5 V and offers low‑power CMOS technology, with typical active current of 1 mA and standby current of 1 µA. The device supports page‑write up to 8 bytes, self‑timed write cycles, and hardware write‑protect via the WP pin.
The datasheet details the bus protocol, timing diagrams, electrical and AC characteristics, and package options (PDIP, SOIC, TSSOP, MSOP, SOT‑23‑5). It also describes write‑protect mode, acknowledge polling for write‑cycle completion, and endurance specifications such as 1 M erase/write cycles and >200‑year data retention.
| Memory size | 2 Kbit (256 × 8 bits) |
|---|---|
| Supply voltage | 1.8 V to 5.5 V |
| Industrial temperature range | -40 °C to +85 °C |
| Automotive temperature range | -40 °C to +125 °C |
| Maximum clock frequency | 400 kHz (2.5 V–5.5 V) |
| Endurance | 1 000 000 erase/write cycles |
| Data retention | >200 years |
| Active current | 1 mA typical |
| Package options | PDIP, SOIC, TSSOP, MSOP, SOT‑23‑5 |
It operates from 1.8 V up to 5.5 V.
A page write can store up to 8 bytes of data.
Connecting the WP pin to Vcc disables programming and protects the entire memory.
The 24LC02B supports up to 400 kHz when Vcc is between 2.5 V and 5.5 V.