Microchip Technology, Inc. Memory AT28HC256F-12LM/883

The AT28HC256F-12LM/883 is a military-grade 256-Kbit (32,768 x 8) high-speed paged parallel EEPROM. It features a fast read access time of 90 ns and supports automatic page write operations with a page write cycle time of 3 ms or 10 ms maximum, allowing for 1 to 64-byte page write operations. The device operates with a low power dissipation of 80 mA during active use and 3 mA in CMOS standby mode. Data protection is ensured through hardware and software mechanisms, and the device includes data polling for end-of-write detection. It is built using high-reliability CMOS technology, offering an endurance of 10,000 to 100,000 write cycles and a data retention period of up to 10 years. The AT28HC256F-12LM/883 operates on a single 5V ± 10% supply and is compatible with both CMOS and TTL inputs and outputs. It is available in multiple package types, including 32-lead CERDIP, flatpack, CLCC, and 30-pin PGA, and is designed to function within a full military temperature range.