Microchip Technology AT93C56B-XHM-B serial EEPROM, 2Kbit, 3-Wire interface, 2 MHz clock, 1.7V-5.5V supply, -40°C to +85°C, 8-TSSOP package, Bulk.
| Parameter | Value |
|---|---|
| Memory type | Non-Volatile |
| Mounting | Surface Mount |
| Supply voltage | 1.7V ~ 5.5V |
| Clock frequency | 2 MHz |
| Memory interface | 3-Wire Serial |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Bulk |
| Technology | EEPROM |
| Memory size | 2Kbit |
| Memory format | EEPROM |
| Case | 8-TSSOP (0.173\", 4.40mm Width) |
| Memory organization | 256 x 8, 128 x 16 |
| Write cycle time - word, page | 5ms |
The AT93C56B-XHM-B is a 2Kbit serial EEPROM from Microchip Technology, organized as 256 x 8 or 128 x 16 bits, accessed over a 3-Wire serial interface.
The 1.7V minimum supply lets this part run directly from a single Li-ion cell through most of its discharge curve, and the 5.5V ceiling covers legacy 5V logic rails without a level translator on the supply side.
The AT24C08D-SSHM-B is a peer 8Kbit EEPROM in a similar 8-pin SOIC package, but it uses an I²C interface instead of the 3-Wire serial bus on the AT93C56B-XHM-B. The different interface means they are not drop-in replacements — the board layout and firmware driver must match the bus protocol.
Microchip certifies this part as ROHS3 compliant. No UL, IEC, or REACH documentation is listed in the available records. Standard Microchip EEPROM datasheets include the ROHS declaration and material composition data.