BU9880GUL-W is a serial EEPROM of I2C BUS interface method of ROHM Co., Ltd., which has a completely conforming to the world standard I2C BUS, other devices can share the port, single power supply 1.7 ~ 5.5V, 400kHz at 1.7 ~ 5.5V, page write mode, automatic erase and end function, low power consumption, write error prevention function, data rewrite 100 million times, data retention for 40 years, noise filter, etc.
This technical note provides an overview of the BU9880GUL-W serial EEPROM, a high‑reliability 64‑Kbit I²C‑bus EEPROM from ROHM. It lists key features such as low power consumption, fast 400 kHz I²C mode, 1 000 000 write cycles and 40‑year data retention.
The document includes detailed electrical specifications, timing diagrams, pin assignments, and recommended operating conditions, as well as ordering information and legal notices. It is intended for designers integrating the device into electronic equipment such as audio‑visual, office‑automation or communication products.
| Supply voltage (Vcc) | 1.7 V ~ 5.5 V |
|---|---|
| Storage temperature range | -65 °C ~ 125 °C |
| Data rewrite cycles | 1 000 000 times |
| Data retention | 40 years |
| Write current (5 V) | 0.5 mA (typ.) |
| Read current (5 V) | 0.2 mA (typ.) |
| Standby current (5 V) | 0.1 µA (typ.) |
| Maximum I²C clock frequency | 400 kHz |
| Page size | 32 Byte |
The device operates from 1.7 V to 5.5 V.
It supports up to 1 000 000 data rewrite cycles.
Data is retained for 40 years.
The I²C bus can run at up to 400 kHz.