8 Kbit I²C EEPROM in a 6-ball VCSP50L1 package
The ROHM BU9889GUL-WE2 is an 8 Kbit serial EEPROM with an I²C interface, organized as 1 K x 8 bits. The 400 kHz clock frequency matches the standard I²C fast-mode bus speed used by most microcontrollers. Data is non-volatile, with a 5 ms write cycle time per word or page. Typical applications include parameter storage, calibration data, and configuration registers in industrial sensors, telecom modules, and automotive cabin electronics.
Supply range and 1.8 V system compatibility
The 1.7 V minimum supply voltage directly answers the 1.8 V system compatibility question. The 5.5 V upper limit also covers legacy 5 V buses, giving the BOM engineer one part number for mixed-voltage boards.
Package and footprint — VCSP50L1
The 6-UFBGA / CSPBGA package (supplier device package VCSP50L1) is a 0.5 mm pitch, 6-ball array.