Description
The AT49F040A is a 5-volt only in-system reprogrammable Flash memory. Its 4 megabits of memory is organized as 524,288 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 55 ns with power dissipation of just 165 mW over the commercial temperature range.

FEATUREs
• Single-voltage Operation
   – 5V Read
   – 5V Reprogramming
• Fast Read Access Time – 55 ns
• Internal Program Control and Timer
• Sector Architecture
   – One 16K Bytes Boot Block with Programming Lockout
   – Two 8K Bytes Parameter Blocks
   – Eight Main Memory Blocks (One 32K Bytes, Seven 64K Bytes)
• Fast Erase Cycle Time – 6 Seconds
• Byte-by-Byte Programming – 20 µs/Byte Typical
• Hardware Data Protection
• DATA Polling for End of Program Detection
• Low Power Dissipation
   – 20 mA Active Current
   – 70 µA CMOS Standby Current
• Typical 10,000 Write Cycles