General Description
   The A29040D is a 5.0 volt-only Flash memory organized as 524,288 bytes of 8 bits each. The 512 Kbytes of data are further divided into eight sectors of 64 Kbytes each for flexible sector erase capability. The 8 bits of data appear on I/O0 - I/O7 while the addresses are input on A0 to A18. The A29040D is offered in 32-pin PLCC, TSOP, and PDIP packages. This device is designed to be programmed insystem with the standard system 5.0volt VCC supply. Additional 12.0 volt VPP is not required for in-system write or erase operations. However, the A29040D can also be programmed in standard EPROM programmers.

FEATUREs
◾ 5.0V ± 10% for read and write operations
◾ Access time:
   - 55ns (max.)
◾ Current:
   - 20mA typical active read current
   - 30mA typical program/erase current
   - 6μA typical CMOS standby
◾ Flexible sector architecture
   - 8 uniform sectors of 64 Kbyte each
   - Any combination of sectors can be erased
   - Supports full chip erase
   - Sector protection:
      A hardware method of protecting sectors to prevent
      any inadvertent program or erase operations within that
      sector
◾ Extended operating temperature range: -40°C~+85°C
   for –U series
◾ Embedded Erase Algorithms
   - Embedded Erase algorithm will automatically erase the
      entire chip or any combination of designated sectors
      and verify the erased sectors
   - Embedded Program algorithm automatically writes and
      verifies bytes at specified addresses
◾ Minimum 100,000 program/erase cycles per sector
◾ 20-year data retention at 125ºC
   - Reliable operation for the life of the system
◾ Compatible with JEDEC-standards
   - Pinout and software compatible with single-power-supply 
      Flash memory standard
   - Superior inadvertent write protection
◾ Data Polling and toggle bits
   - Provides a software method of detecting completion of
      program or erase operations
◾ Erase Suspend/Erase Resume
   - Suspends a sector erase operation to read data from,
      or program data to, a non-erasing sector, then
      resumes the erase operation
◾ Package options
   - 32-pin P-DIP, PLCC, or TSOP (Forward type)
   - All Pb-free (Lead-free) products are RoHS compliant