The M24C64 is a 64-Kbit I2C-compatible EEPROM (Electrically Erasable PROgrammable Memory) organized as 8 K × 8 bits. Over an ambient temperature range of -40 °C / +85 °C, the M24C64-W can operate with a supply voltage from 2.5 V to 5.5 V, the M24C64-R can operate with a supply voltage from 1.8 V to 5.5 V, and the M24C64-F and M24C64-DF can operate with a supply voltage from 1.7 V to 5.5 V ( the M24C64-F can also operate down to 1.6 V, under some restricting conditions).The M24C64-D offers an additional page, named the Identification Page (32 bytes). The Identification Page can be used to store sensitive application parameters which can be (later) permanently locked in Read-only mode.

FEATUREs
• Compatible with all I2C bus modes:
   –1 MHz
   – 400 kHz
   – 100 kHz
• Memory array:
   – 64 Kbit (8 Kbytes) of EEPROM
   – Page size: 32 bytes
   – Additional Write lockable page(M24C64-D order codes)
• Single supply voltage:
   – 1.7 V to 5.5 V over –40 °C / +85 °C
   – 1.6 V to 5.5 V over 0 °C / +85 °C
• Write:
   – Byte Write within 5 ms
   – Page Write within 5 ms
• Random and sequential Read modes
• Write protect of the whole memory array
• Enhanced ESD/Latch-Up protection
• More than 4 million Write cycles
• More than 200-year data retention Packages