AT28HC256 256K (32K x 8) High-speed Parallel EEPROM

AT28HC256 256K (32K x 8) High-speed Parallel EEPROM

The AT28HC256 is a high-performance electrically erasable and programmable readonly memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the AT28HC256 offers access times to 70 ns with power dissipation of just 440 mW. Whe.

Features

• Fast Read Access Time
  – 70 ns
• Automatic Page Write Operation
  – Internal Address and Data Latches for 64 Bytes
  – Internal Control Timer
• Fast Write Cycle Times
  – Page Write Cycle Time: 3 ms or 10 ms Maximum
  – 1 to 64-byte Page Write Operation
• Low Power Dissipation
  – 80 mA Active Current
  – 3 mA Standby Current
• Hardware and Software Data Protection
• DATA Polling for End of Write Detection
• High Reliability CMOS Technology
  – Endurance: 104 or 105 Cycles
  – Data Retention: 10 Years
• Single 5V ± 10% Supply
• CMOS and TTL Compatible Inputs and Outputs
• JEDEC Approved Byte-wide Pinout
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