AMD Am29LV400B 4 Megabit（512 K x 8-Bit/256 K x 16-Bit）CMOS 3.0 Volt-only Boot Sector Flash Memory is a low power product manufactured on 0.35 µm process technology. It features single power supply operation, high performance, flexible sector architecture and sector protection features.
This handbook describes the AMD Am29LV400B 4‑Megabit flash memory, a 3.0 V‑only CMOS device offered in 48‑ball FBGA, 48‑pin TSOP and 44‑pin SO packages. It covers the device architecture, pinout, electrical characteristics, programming algorithms, sector protection, and special handling requirements.
Key features include a full voltage range of 2.7 V‑3.6 V, regulated 3.0 V‑3.6 V operation, access times as fast as 70 ns, ultra‑low power modes, and a guaranteed minimum of 1,000,000 write cycles per sector.
| Memory size | 4 Megabit (512 K × 8‑Bit / 256 K × 16‑Bit) |
|---|---|
| Full voltage range | 2.7 V to 3.6 V |
| Regulated voltage range | 3.0 V to 3.6 V |
| Access time | as fast as 70 ns |
| Read current | 7 mA |
| Program/erase current | 15 mA |
| Automatic sleep mode current | 200 nA |
| Package options | 48‑ball FBGA, 48‑pin TSOP, 44‑pin SO |
| Write‑cycle guarantee | ≥ 1,000,000 cycles per sector |
It operates from 2.7 V to 3.6 V in full‑range mode and from 3.0 V to 3.6 V in regulated mode.
The device guarantees a minimum of 1,000,000 write cycles per sector.
It is offered in 48‑ball FBGA, 48‑pin TSOP, and 44‑pin SO packages.
The device can be reset by pulling the RESET# pin low.