M29W640FT M29W640FB 64 Mbit (8Mb x8 or 4Mb x16, Page, Boot Block) 3V Supply Flash Memory Feature summary
The M29W640FT and M29W640FB are 64‑Mbit (8 Mb × 8 or 4 Mb × 16) non‑volatile flash memories that operate from a 2.7 V to 3.6 V supply. They support asynchronous random and page reads, and feature an on‑chip program/erase controller with suspend/resume capabilities. The memory is organized into 135 blocks, including a boot block, parameter blocks, main blocks, and an optional extended block for security data.
The devices are offered in TSOP48 (12 × 20 mm) and TFBGA48 (6 × 8 mm) packages, including lead‑free ECOPACK versions. Detailed command sets, timing diagrams, and electrical characteristics are provided, along with revision history and legal notices.
| Supply voltage (Vcc) | 2.7 V to 3.6 V |
|---|---|
| Fast program voltage (Vpp) | 12 V (optional) |
| Memory size | 64 Mbit (8 Mb × 8 or 4 Mb × 16) |
| Program/erase endurance | 100,000 cycles per block |
| Page width | 4 words |
| Page access time | 25 ns |
| Random access time | 60 ns |
| Typical programming time | 10 µs per byte/word |
The device operates from 2.7 V to 3.6 V for programming, erase, and read operations.
Each block is rated for 100,000 program/erase cycles.
Yes, a 12 V Vpp can be applied for optional fast programming.