GENERAL DESCRIPTION
The FT29F040B is a 4 Mbit, 5.0 volt-only Flash memory organised 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 FT29F040B is offered in 32-pin PLCC, TSOP, and PDIP packages. This 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.

DISTINCTIVE CHARACTERISTICS
■ 5.0 V ± 10% for read and write operations
   — Minimises system level power requirements
■ Manufactured on 0.32 µm process technology
   — Compatible with 0.5 µm FT29F040 device
■ High performance
   — Access times as fast as 55 ns
■ 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
   — 8 uniform sectors of 64 Kbytes each
   — Any combination of sectors can be erased
   — Supports full chip erase
   — Sector protection:
      A hardware method of locking sectors to prevent
      any program or erase operations within that sector
■ Embedded Algorithms
   — Embedded Erase algorithm automatically
      preprograms and erases the entire chip or any
      combination of designated sectors
   — Embedded Program algorithm automatically
      writes and verifies bytes at specified addresses
■ Minimum 1,000,000 program/erase cycles per
   sector guaranteed
■ 20-year data retention at 125°C
   — Reliable operation for the life of the system
■ Package options
   — 32-pin PLCC, TSOP, or PDIP
■ Compatible with JEDEC standards
   — Pinout and software compatible with
      single-power-supply Flash standard
   — Superior inadvertent write protection
■ Data# Polling and toggle bits
   — Provides a software method of detecting
      program or erase cycle completion
■ 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