AM29F400B

DATA SHEET Am29F400B 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory DISTINCTIVE CHARACTERISTICS ■ Single power supply operation — 5.0 volt-only operation for read, erase, and program operations — Minimizes system level requirements ■ Manufactured on 0.32 µm process technology — Compatible with 0.5 µm Am29F400 device ■ High performance — Access times as fast as 45 ns ■ Low power consumption (typical values at 5 MHz) — 1 µA standby mode current — 20 mA read current (byte mode) — 28 mA read current (word mode) — 30 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 via programming equipment Temporary Sector Unprotect feature allows code changes in previously locked sectors ■ Top or bottom boot block configurations available ■ 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 ■ 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 ■...