The ROHM BR93G56F-3GTE2 is a 2Kbit serial EEPROM using the Microwire bus interface, organized as 256 x 8 or 128 x 16 bits. Packaged in an 8-SOP body, it is surface-mount and intended for non-volatile storage of configuration data, calibration constants, serial numbers, or small lookup tables in industrial control, sensor modules, telecom gear, and battery-powered instruments where the wide supply range and low pin-count bus are advantages.
Supply voltage and interface — the two specs that decide fit
The 1.7V to 5.5V supply range covers single-cell Li-ion down to near-depletion and 5V legacy rails, so no level translator is needed when the host MCU runs at 3.3V or 5V. The Microwire interface uses three signals (SK, DI, DO) plus a chip-select — not I2C or SPI — so verify the host controller has a dedicated Microwire peripheral or can bit-bang the timing. At 3 MHz the bus can read a full 2Kbit in under 1 ms, which is fine for most parameter-storage tasks.
Active lifecycle and compliance status
It is fully RoHS3 compliant.
The data retention and endurance are specified per the EEPROM technology; the 5ms write cycle time is consistent across the full temperature range.