The ROHM BR93H76RF-2LBH2 is an 8 Kbit serial EEPROM organized as 512 x 16 bits, using a Microwire (3-wire) interface for read and write operations.
The 2 MHz clock rate on the Microwire bus translates to a theoretical 2 Mbps serial throughput for reads, though the actual read/write bandwidth is gated by the 4 ms write-cycle time per word or page. That 4 ms write time is typical for this density class — it means a single-byte update takes about 4 ms before the next operation can start, so firmware should poll the ready/busy status or insert a delay accordingly. For bulk writes, the page-write mode (512 x 16 organized as pages) can reduce total programming time compared to byte-by-byte writes, but the per-page write time still holds at 4 ms.