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