GENERAL DESCRIPTION
   The Am29SL400D is an 4Mbit, 1.8 V volt-only Flash memory organized as 524,288 bytes or 262,144 words. The device is offered in a 48-ball FBGA package. The word-wide data (x16) appears on DQ15–DQ0; the byte-wide (x8) data appears on DQ7–DQ0. This device is designed to be programmed and erased in-system with a single 1.8 volt VCC supply. No VPP is required for write or erase operations. The device can also be programmed in standard EPROM programmers

DISTINCTIVE CHARACTERISTICS
◾ Single power supply operation
   — 1.65 to 1.95 V for read, program, and erase
      operations
   — Ideal for battery-powered applications
◾ Manufactured on 0.23 µm process technology
◾ High performance
   — Access times as fast as 90 ns
◾ Ultra low power consumption (typical values at
   5 MHz)
   — 0.2 µA Automatic Sleep Mode current
   — 0.2 µA standby mode current
   — 5 mA read current
   — 15 mA program/erase current
◾ Flexible sector architecture
   — One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and
      seven 64 Kbyte sectors (byte mode)
   — One 8 Kword, two 4 Kword, one 16 Kword, and
      seven 32 Kword sectors (word mode)
   — 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
◾ Unlock Bypass Program Command
   — Reduces overall programming time when
      issuing multiple program command sequences
◾ Top or bottom boot block configurations
   available
◾ Minimum 1,000,000 erase cycle guarantee per
   sector
◾ 20-year data retention at 125°C