4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
The AMD Am29LV400 is a 4 Mbit CMOS flash memory device that operates from a single 3.0 V supply. It is available in 48‑ball FBGA, 48‑pin TSOP and 44‑pin SO packages and supports both byte (8‑bit) and word (16‑bit) modes.
The datasheet details electrical characteristics, pin configurations, sector architecture, power‑saving features, and handling instructions for fine‑pitch BGA packages. It also provides ordering information, physical dimensions, and revision history.
| Memory size | 4 Mbit (512 K × 8‑Bit / 256 K × 16‑Bit) |
|---|---|
| Operating voltage (full range) | 2.7 V to 3.6 V |
| Operating voltage (regulated range) | 3.0 V to 3.6 V |
| Access time (regulated range) | 90 ns |
| Access time (full range) | 100 ns |
| Package options | 48‑ball FBGA, 48‑pin TSOP, 44‑pin SO |
| Typical write/erase current | 20 mA program/erase |
| Sleep mode current | 200 nA |
| Standby mode current | 200 nA |
| Read current | 10 mA |
| Write cycles per sector (typical) | 1,000,000 |
| Write cycles per sector (minimum guaranteed) | 100,000 |
Typical endurance is 1,000,000 cycles per sector, with a guaranteed minimum of 100,000 cycles.
The RESET# pin is the hardware reset pin that terminates any operation in progress and returns the device to read mode.
The device is offered in 48‑ball FBGA, 48‑pin TSOP, and 44‑pin SO packages.