This document describes the features and characteristics of the BR24T series high reliability serial EEPROMs, including compliance with the world standard I2C BUS interface, the ability to connect other devices to the same port, single power source operation suitable for battery use, wide operating voltage range, fast mode 400KHz operation, page write mode, auto erase and auto end function, low current consumption, write mistake prevention function, various packaging options, data rewrite up to 1,000,000 times, and data retention for 40 years.
The ROHM BR24T series is a family of high‑reliability serial EEPROMs that use an I²C‑compatible bus interface. The devices operate from a single 1.7 V to 5.5 V supply, making them suitable for battery‑powered applications, and they offer up to 1 M write cycles and 40‑year data retention.
The note provides absolute maximum ratings, recommended operating conditions, electrical characteristics, timing parameters, pin assignments and write command procedures for the various capacity members of the series (1 Kbit to 1 Mbit). It also includes block diagrams and typical application information.
| Supply voltage range | 1.7 V – 5.5 V |
|---|---|
| Data retention | 40 years |
| Write endurance | 1,000,000 cycles |
| Maximum SCL frequency | 400 kHz |
| Low current consumption | Low (typical values in spec tables) |
They operate from 1.7 V to 5.5 V.
Up to 1 M (1,000,000) write cycles.
Data is retained for 40 years.
The bus can run up to 400 kHz.