The BR24A□□-WM series is a serial EEPROM with an I2C bus interface.
The ROHM BR24A01A is a 1‑Kbit serial EEPROM that uses an I²C‑compatible two‑wire interface (SCL, SDA). The device operates from a single 2.5 V to 5.5 V supply and is intended for battery‑powered applications, offering low standby current and high reliability.
The note provides detailed specifications such as supply voltage range, write and standby currents, data retention of 40 years, and up to 100 k rewrite cycles. It also includes pin assignments, timing diagrams for fast‑mode (400 kHz) and standard‑mode (100 kHz), package options (SOP8, SOP‑J8, MSOP8), and ordering information.
| Supply voltage (VCC) | 2.5 V – 5.5 V |
|---|---|
| Data retention | 40 years |
| Maximum rewrite cycles | 100 000 times |
| Package options | SOP8, SOP‑J8, MSOP8 |
The device operates from 2.5 V to 5.5 V.
It can be rewritten up to 100 000 times.
Data can be retained for 40 years.