GENERAL DESCRIPTION
The AS29F040 is a 4Mbit, 5.0 Volt-only FLASH memory organized as 524,288 Kbytes of 8 bits each. The 512 Kbytes of data are divided into eight sectors of 64 Kbytes each for flexible erase capability. The 8 bits of data appear on DQ0-DQ7. The device is designed to be programmed in-system with the standard system 5.0 Volt VCC supply. A 12.0 volt VPP is not required for write or erase operations. The device can also be programmed in standard EPROM programmers.

FEATURES
• Single 5.0V ±10% power supply operation
• Fastest access times: 55, 60, 70, 90, 120, & 150ns
• Low power consumption:
    √ 20 mA typical active read current
    √ 30 mA typical program/erase current
    √ 1 μA typical standby current (standard access time to active mode)
• Flexible sector architecture
    √ Eight uniform 64 Kbyte each
    √ Any combination of sectors can be erased
    √ Supports full chip erase
• Sector protection
• Embedded Algorithms Erase & Program Algorithms
• Erase Suspend/Resume
• Minimum 1,000,000 Program/Erase Cycles per sector guaranteed
• Compatible with JEDEC standards
    √ Pinout and software compatible with single-powersupply FLASH
• Data Polling and Toggle Bits
• 20-year data retention at 125°C