DESCRIPTION
The M29W040 is a non-volatile memory that may be erased electrically at the block level, and programmed Byte-by-Byte.
The interface is directly compatible with most microprocessors. PLCC32, TSOP32(8 x 20mm)and TSOP32 (8 x 14mm) packages are available. Both normal and reverse pin outs are available for the TSOP32 (8 x 20mm) package.

■ M29W040 is replaced by the M29W040B
■ 2.7V to 3.6V SUPPLY VOLTAGE for PROGRAM, ERASE and READ OPERATIONS
■ FAST ACCESS TIME: 100ns
■ BYTE PROGRAMMING TIME: 12µs typical
■ ERASE TIME
    – Block: 1.5 sec typical
    – Chip: 2.5 sec typical
■ PROGRAM/ERASE CONTROLLER (P/E.C.)
    – Program Byte-by-Byte
    – Data Polling and Toggle bits Protocol for P/E.C. Status
■ MEMORY ERASE in BLOCKS
    – 8 Uniform Blocks of 64 KBytes each
    – Block Protection
    – Multiblock Erase
■ ERASE SUSPEND and RESUME MODES
■ LOW POWER CONSUMPTION
    – Read mode: 8mA typical (at 12MHz)
    – Stand-by mode: 20µA typical
    – Automatic Stand-by mode
■ POWER DOWN SOFTWARE COMMAND
    – Power-down mode: 1µA typical
■ 100,000PROGRAM/ERASE CYCLES per BLOCK
■ 20 YEARS DATA RETENTION
    – Defectivity below 1ppm/year
■ ELECTRONIC SIGNATURE
    – Manufacturer Code: 20h
    – Device Code: E3h