The MicrochipAT24C04D series is a 4 Kbit serial EEPROM. Device communication is achieved through a single I/O pin. 16‑byte page write or single byte writes are allowed. This device comprises of die sale options: wafer form and tape and reel.

Low‑voltage operation
Schmitt triggers, filtered inputs for noise suppression
Bidirectional data transfer protocol
Write-protect pin for full array hardware data protection
Random and sequential read modes
High reliability