This document introduces the features of the A29L400A series 512K x 8-bit/256K x 16-bit CMOS 3.0 volt boot sector flash memory
The A29L400A series provides 512 K × 8 bit or 256 K × 16 bit flash memory, operating from a single 3.0 V supply. It supports full‑chip erase, sector protection, automatic sleep mode, and a typical 100 000 program/erase cycles per sector with 20‑year data retention at 125 °C.
Available in 44‑pin SOP, 48‑pin TSOP and 48‑ball TFBGA packages, the device offers a wide voltage range (2.7 V–3.6 V), low standby current (200 nA), and fast access times (70 ns / 90 ns). It is JEDEC‑compatible and includes embedded erase/program algorithms and status pins for easy integration into battery‑powered systems.
| Memory size | 4 Mbit (512 K × 8 bit or 256 K × 16 bit) |
|---|---|
| Supply voltage range | 2.7 V to 3.6 V |
| Operating temperature range | -40 °C to +85 °C |
| Typical active read current | 4 mA |
| Typical program/erase current | 20 mA |
| Standby current | 200 nA |
| Program/erase cycles per sector | 100 000 (typical) |
| Data retention | 20 years at 125 °C |
| Package options | 44‑pin SOP, 48‑pin TSOP, 48‑ball TFBGA |
It operates from 2.7 V to 3.6 V.
Each sector can typically endure 100 000 program/erase cycles.
The device retains data for 20 years at 125 °C.
It is offered in 44‑pin SOP, 48‑pin TSOP, and 48‑ball TFBGA packages.