The ROHM BR93L76F-WE2 is an 8Kbit serial EEPROM organized as 512 x 16 bits, accessed over a Microwire interface at up to 2 MHz. It operates from a single 1.8V to 5.5V supply, covering both legacy 5V logic and modern 3.3V or 1.8V core rails. The 8-SOIC package (0.173" body width, 4.40mm) is a common footprint for parameter storage, calibration constants, or small firmware look-up tables in industrial controls, telecom modules, and consumer appliances.
2 MHz clock — bus timing and throughput
The 2 MHz clock rate is the Microwire bus speed. At this rate a 16-bit word read takes about 8 µs plus the 5 ms write cycle for a page or word write. For designs that store configuration data updated infrequently (once per power-up or on a field-calibration event), the write speed is adequate. If the application streams data into EEPROM at high rates, the 5 ms write-cycle time becomes the bottleneck — consider a larger page-size or faster-write EEPROM family.
The wide supply range means the BR93L76F-WE2 can sit on a 5V legacy bus without a level shifter, or on a 3.3V or 1.8V microcontroller rail. The Microwire interface is not SPI, but the timing is similar — the chip select, clock, and data-in/data-out lines are straightforward to bit-bang or drive from a dedicated Microwire peripheral. The 1.8V minimum supply is low enough for battery-powered handheld gear that runs down to that rail.
The 8-SOP (supplier device package 8-SOP) is the same 8-SOIC footprint used across many EEPROMs and small logic devices — no board re-spin if you switch from another 8-pin EEPROM in the same density.
ROHS3 compliant.