AT24C64D-MAHM-T

• 64 Kbit Serial EEPROM, 8K X 8 Organisation
• 2-Wire I2C Interface at Up to 1 MHz
• Wide 1.7 V to 5.5 V Supply Range
• 450 Ns Access time, 3 mA Nominal Supply Current
• 8-Pin Ultra-Thin UDFN package, 600 Um Height
• -40 C to 85 C Operating Temperature Range
• Lead free, RoHS compliant, Production status, Tape and Reel

The Microchip AT24C64D-MAHM-T is a 64 kbit serial EEPROM organised as 8K x 8, communicating over a 2-wire I2C interface at up to 1 MHz. It operates from 1.7 V to 5.5 V, covering 1.8 V, 2.5 V, 3.3 V and 5 V systems, draws 3 mA nominal supply current, and has a 450 ns access time. The AT24C64D-MAHM-T is supplied in an 8-pin ultra-thin UDFN package with a 600 um height, is rated -40 C to 85 C, lead free, RoHS compliant, and at Production lifecycle status shipping on tape and reel. EEPROM is byte-erasable non-volatile memory, which is why it is used for small settings and calibration data rather than bulk program storage.

The AT24C64D-MAHM-T is used to hold small amounts of data that must survive a power cycle: calibration constants, serial numbers and board identity, configuration settings, user preferences, and event or error counters. Two-wire I2C means it costs only two pins on the host controller, and the ultra-thin UDFN package fits designs where component height is constrained. Typical hosts are consumer and wearable devices, industrial sensors and modules, automotive-adjacent electronics, medical devices, and pluggable modules that carry their own identity data. Buyers are embedded product OEMs across most segments, module and cable assembly manufacturers, and contract assemblers stocking serial EEPROM as a standard line item.