The M24256 is a 256-Kbit I²C-compatible EEPROM (Electrically Erasable PROgrammable Memory) organized as 32 K × 8 bits.The M24256-BW can operate with a supply voltage from 2.5 V to 5.5 V, the M24256-BR and M24256-DR can operate with a supply voltage from 1.8 V to 5.5 V, and the M24256-BF and M24256-DF can operate with a supply voltage from 1.7 V to 5.5 V. All these devices operate with a clock frequency of 1 MHz (or less), over an ambient temperature range of –40 °C / +85 °C.Compatible with all I²C bus modes:1 MHz400 kHz100 kHzMemory array:256 Kbit (32 Kbytes) of EEPROMPage size: 64 bytesAdditional Write lockable page (M24256-D order codes)Single supply voltage and high speed:1 MHz clock from 1.7 V to 5.5 VWrite:Byte Write within 5 msPage Write within 5 msOperating temperature range:from -40 °C up to +85 °CRandom and sequential Read modesWrite protect of the whole memory arrayEnhanced ESD/Latch-Up protectionMore than 4 million Write cyclesMore than 200-years data retentionPackagesSO8 ECOPACK2®TSSOP8 ECOPACK2®UFDFPN8 ECOPACK2®WLCSP ECOPACK2®