The BU99901GUZ-W series is a serial EEPROM of I2C BUS interface method.
The BU99901GUZ-W is a high‑reliability serial EEPROM with I²C bus interface, offering low power consumption and a wide supply voltage range suitable for battery‑powered applications. It supports fast‑mode operation up to 400 kHz, page‑write capability, and includes write‑protect and auto‑erase functions.
The document details absolute maximum ratings, memory cell characteristics, timing diagrams, pin assignments, and current consumption for write, read, and standby modes. Ordering information and packaging specifications are also provided.
| Supply voltage range | -0.3 V to +6.5 V |
|---|---|
| Operating temperature range | -40 °C to +85 °C |
| Data rewrite endurance | 1,000,000 cycles |
| Data retention | 40 years |
| Write current (3.3 V) | 0.6 mA (Typ.) |
| Read current (3.6 V) | 0.6 mA (Typ.) |
The device operates from –0.3 V up to +6.5 V.
The EEPROM supports up to 1,000,000 data‑rewrite cycles.
It operates from –40 °C to +85 °C, with storage allowed from –65 °C to +125 °C.