This document describes the features and characteristics of M29F040 4 Mbit (512Kb x8, Uniform Block) Single Supply Flash Memory, including supply voltage, access time, programming time, erase time, erase and programming controller, low power consumption, data retention time, electronic signature, etc.
The M29F040 is a 4 Mbit (512 Kb × 8) uniform‑block flash memory designed for single‑supply operation. It is compatible with a wide range of microprocessors and is offered in PLCC32 and TSOP32 packages with normal and reverse pin‑outs.
Key features include fast 70 ns access time, byte‑programming in 10 µs, block erase in 1 s, low power consumption (8 mA read, 25 µA standby), 100 k program/erase cycles per block, and 20‑year data retention. The device includes a built‑in Program/Erase Controller with block protection, suspend/resume, and status bits for polling, toggle, and error detection.
| Fast Access Time | 70 ns |
|---|---|
| Byte Programming Time | 10 µs |
| Block Erase Time | 1.0 sec (typical) |
| Supply Voltage Range | –0.6 to 7 V |
| Operating Temperature Range | –40 to 125 °C |
| Standby Current | 25 µA typical |
| Read Mode Current | 8 mA typical (at 12 MHz) |
| Program/Erase Cycles per Block | 100,000 |
| Data Retention | 20 years |
The device operates from –0.6 V to 7 V.
It supports up to 100,000 program/erase cycles per block.
The fast access time is 70 ns.
The memory is divided into eight uniform blocks of 64 KB each.