Microchip Technology, Inc. Memory AT28C64E-25SC

The AT28C64E-25SC is a low-power, high-performance 64Kbit EEPROM memory device featuring a fast read access time of 120 ns and a byte write time of 200 µs. It operates with a supply voltage of 5V ± 10% and is compatible with both CMOS and TTL logic levels. The device includes self-timed byte write cycles, internal address and data latches, and an automatic clear before write function, which enhances ease of use in microprocessor-controlled applications. This memory chip supports a data retention period of up to 10 years and offers high reliability with an endurance of 10^4 to 10^5 write cycles. It features a READY/BUSY open drain output for write cycle detection and data polling capabilities to signal the completion of write operations. The AT28C64E-25SC is available in multiple package types, including SOIC, PDIP, and PLCC, making it versatile for various design requirements.