The M93S46, M93S56, M93S66 devices are Electrically Erasable PROgrammable Memories (EEPROMs) organized as 64, 128 or 256 words (one word is 16 bits), accessed through the MICROWIRE bus.The M93S46, M93S56, M93S66 can operate with a supply voltage from 2.5 V to 5.5 V over an ambient temperature range of -40 °C / +85 °C.Compatible with MICROWIRE bus serial interfaceMemory array1 Kbit, 2 Kbit or 4 Kbit of EEPROMOrganized by word (16b)Page = 4 wordsWriteByte write within 5 msPage write within 5 msReady/busy signal during programmingUser defined write protected areaHigh-speed clock: 2 MHzSingle supply voltage:2.5 V to 5.5 VOperating temperature range: -40 °C up to +85 °C.Enhanced ESD protectionMore than 4 million write cyclesMore than 200-year data retentionPackagesPDIP8 ECOPACK® 1TSSOP8 ECOPACK® 2SO8 ECOPACK® 2