Microchip Technology, Inc. Memory AT28HC256-70JC

The AT28HC256-70JC is a high-performance electrically erasable and programmable read-only memory (EEPROM) with a capacity of 256K bits, organized as 32,768 words by 8 bits. It features a fast read access time of 70 ns and supports automatic page write operations, allowing for the writing of 1 to 64 bytes in a single cycle with a maximum page write cycle time of 3 ms or 10 ms. The device operates on a single 5V ± 10% supply and has low power dissipation, with an active current of 80 mA and a standby current of 3 mA. The AT28HC256 incorporates hardware and software data protection mechanisms, ensuring data integrity during write operations. It also includes a DATA polling feature for end-of-write detection, enhancing usability. The memory is built using high-reliability CMOS technology, offering an endurance of 10^4 to 10^5 cycles and a data retention period of up to 10 years. The device is compatible with both CMOS and TTL logic levels and is available in various package options, including a JEDEC approved byte-wide pinout. This product is suitable for applications requiring reliable non-volatile memory with fast access and low power consumption.