General Description
The A29L040 is a 3.0 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 A29L040 is offered in 32-pin PLCC, TSOP (8mm x 20mm) or sTSOP (8mm x 14mm) packages. This device is designed to be programmed in-system with the standard system 3.0 volt VCC supply. Additional 12.0 volt VPP is not required for in-system write or erase operations. However, the A29L040 can also be programmed in standard EPROM programmers.

FEATUREs
■ Single power supply operation
    - Full voltage range: 2.7 to 3.6 volt read and write
        operations for battery-powered applications
    - Regulated voltage range: 3.0 to 3.6 volt read and
        write operations for compatibility with high
        performance 3.3 volt microprocessors
■ Access times:
    - 70 (max.)
■ Current:
    - 4 mA typical active read current
    - 20 mA typical program/erase current
    - 200 nA typical CMOS standby
    - 200 nA Automatic Sleep Mode current
■ 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
■ 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
■ Typical 100,000 program/erase cycles per sector
■ 20-year data retention at 125°C
    - Reliable operation for the life of the system
■ Compatible with JEDEC-standards
    - Pinout and software compatible with single-powersupply 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 DIP, PLCC, TSOP (8mm x 20mm) or sTSOP (8mm x 14mm)