Microchip Technology, Inc. 4Kb I2C compatible Serial Present Detect Serial EEPROM AT34C04

The Microchip AT34C04 is a 4 Kb Serial EEPROM utilizing an I2C (2-wire) serial interface. The device is organized as one block of 512 x 8 and is optimized for use in consumer and industrial applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options with an operating range of 1.7 to 3.6V. The AT34C04 is tailored specifically for DRAM memory modules with Serial Presence Detect (SPD). The device incorporates a Reversible Software Write Protection (RSWP) feature enabling the capability to selectively write protect any or all of the four 128-byte quadrants. Additional Features 512 x 8 (4 Kbit) 2-Wire Serial Interface, I2C Compatible 400 kHz and 1 MHz clock compatibility Supports up to 8 devices on the bus JEDEC JC42.4 (EE1004-v) Serial Presence Detect (SPD) Compliant Advanced Software Data Protection Features Individually reversible software write protection on all four 128-byte quadrants Software procedure to verify each quadrant’s write protection status Self-Timed Erase and Write Cycles (5 ms max.) Low Power Consumption Read current 0.4 mA (Typ), 1 mA (Max) Write current 1.5 mA (Typ), 3 mA (Max) Standby current 4 uA (Max) Hardware Write-Protect Pin More than 1 million erase/write cycles Data retention > 100 years Available in 8-lead JEDEC SOIC, 8-lead TSSOP, and 8-pad UDFN