GENERAL DESCRIPTION
The Am29F004B is a 4 Mbit, 5.0 volt-only Flash memory device organized as 524,288 bytes. The data appears on DQ0–DQ7. The device is offered in a 32-pin PLCC package. 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 program or erase operations. The device can also be programmed in standard EPROM programmers.

DISTINCTIVE CHARACTERISTICS
■ 5.0 Volt single power supply operation
   — Minimizes system-level power requirements
■ High performance
   — Access times as fast as 70 ns
■ Manufactured on 0.32 µm process technology
■ Ultra low power consumption (typical values at 5 MHz)
   — 20 mA typical active read current
   — 30 mA typical program/erase current
   — 1 µA typical standby mode current
■ Flexible sector architecture
   — One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and seven 64 Kbyte sectors
   — Supports full chip erase
   — Sector Protection features:
      A hardware method of locking a sector to
      prevent any program or erase operations within
      that sector
      Sectors can be locked in-system or via
      programming equipment
      Temporary Sector Unprotect feature allows code
      changes in previously locked sectors
■ Top or bottom boot block configurations available
■ Minimum 1,000,000 write cycle guarantee per sector
■ Package option
   — 32-pin PLCC
■ Compatible with JEDEC standards
   — Pinout and software compatible with singlepower supply Flash
   — Superior inadvertent write protection
■ 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 data at specified addresses
■ Erase Suspend/Erase Resume
   — Suspends an erase operation to read data from, or program data to, a sector that is not being erased, then resumes the erase operation
■ Data# Polling and toggle bits
   — Provides a software method of detecting program or erase operation completion
■ 20-year data retention at 125°C