Key facts
- Brand
- STMicroelectronics
- Model
- M29F040B
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
Start here

ST M29F040B 4 Mbit (512Kb x8 Uniform Block) Single Supply Flash Memory handbook
The document describes the M29F040B, a 4 Mbit (512Kb x8) non-volatile Flash Memory designed for read, erase, and reprogram operations using a single 5V supply. It features an embedded Program/Erase controller that simplifies memory updates and includes status register polling to detect operation completion.
Read onlineSTMicroelectronics M29F040B specifications
| Memory Capacity | 4 Mbit (512Kb x8) |
|---|---|
| Supply Voltage | Single 5V + 10% |
| Access Time | 45ns |
| Programming Time | 8us per Byte typical |
| Memory Blocks | 8 Uniform 64 Kbytes |
| Program/Erase Cycles | 100,000 per Block |
| Data Retention | 20 Years |
Source: ST M29F040B 4 Mbit (512Kb x8 Uniform Block) Single Supply Flash Memory handbook
All STMicroelectronics M29F040B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the manufacturer code for this memory?
The manufacturer code is 20h.
From: ST M29F040B 4 Mbit (512Kb x8 Uniform Block) Single Supply Flash Memory handbook
What are the available package types?
It is offered in TSOP32, PLCC32 and PDIP32 packages.
From: ST M29F040B 4 Mbit (512Kb x8 Uniform Block) Single Supply Flash Memory handbook
What supply voltage is required for the M29F040B?
The device operates from a single 5 V supply with a tolerance of ±10 %.
From: ST M29F040B Datasheet
How many program/erase cycles can each block endure?
Each memory block is rated for 100,000 program/erase cycles.
From: ST M29F040B Datasheet
