仕様
| 属性 | 値 |
| Supplier | Micron Technology Inc. |
| Package / Case | Tray |
| Part Status | Obsolete |
| Memory Type | Non-Volatile |
| Memory Format | FLASH |
| Technology | FLASH - NOR |
| Memory Size | 64Mb (8M x 8, 4M x 16) |
| Memory Interface | Parallel |
| Write Cycle Time - Word Page | 70ns |
| Access Time | 70 ns |
| Voltage - Supply | 2.7V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概要
Description
The M29W640FT70N6E is a 64‑Mbit NOR flash memory device (firmware/code storage) from the M29W family. It provides nonvolatile, byte-addressable storage with a parallel x8 data bus for embedded systems. Key points:
- Capacity and type: 64 Mbit NOR flash (non-volatile, reads at random like RAM but retains data when power is removed).
- Speed and interface: 70 ns read access time, parallel data bus; uses standard NOR flash command set (READ, PROGRAM, ERASE, STATUS).
- Voltage and packaging: typically operated from a single supply in the 3.0–3.6 V range; available in common surface-mount packages with multiple temperature grades (industrial options).
- Use cases: boot memory and firmware/storage in microcontrollers and embedded controllers; favored for fast random reads and deterministic behavior.
- Constraints: requires erase-before-write; finite write/erase cycles; wear must be managed in long-term designs.
Suffix interpretation (FT70N6E) encodes speed, bus width, packaging/temperature options, while the M29W640F family denotes 64 Mb NOR Flash.
- Capacity and type: 64 Mbit NOR flash (non-volatile, reads at random like RAM but retains data when power is removed).
- Speed and interface: 70 ns read access time, parallel data bus; uses standard NOR flash command set (READ, PROGRAM, ERASE, STATUS).
- Voltage and packaging: typically operated from a single supply in the 3.0–3.6 V range; available in common surface-mount packages with multiple temperature grades (industrial options).
- Use cases: boot memory and firmware/storage in microcontrollers and embedded controllers; favored for fast random reads and deterministic behavior.
- Constraints: requires erase-before-write; finite write/erase cycles; wear must be managed in long-term designs.
Suffix interpretation (FT70N6E) encodes speed, bus width, packaging/temperature options, while the M29W640F family denotes 64 Mb NOR Flash.
Equivalent
Equivalent 64-Mbit, 3V parallel-flash parts (x8, ~70ns) from major vendors:
- STMicroelectronics: M29W640G / M29W640FT
- Spansion/Cypress: S29GL064M (or S29GL064N)
- Winbond: W29GL064G
- Macronix: MX29GL064E
Note: Check exact package/pinouts and timing before cross‑replacing.
- STMicroelectronics: M29W640G / M29W640FT
- Spansion/Cypress: S29GL064M (or S29GL064N)
- Winbond: W29GL064G
- Macronix: MX29GL064E
Note: Check exact package/pinouts and timing before cross‑replacing.
Features
M29W640FT70N6E is a 64-Mbit parallel NOR flash memory. Key features:
- Density: 64 Mbit (8 Mbyte), 8-bit parallel NOR flash
- Access/erase: 70 ns read, sector erase 64 KB, page program (typically 256 bytes), chip erase option
- Voltage: VCC 2.7–3.6 V (nominal ~3.0 V)
- Temperature: -40°C to 85°C
- Endurance/retention: ~100,000 erase cycles per sector; data retention ~20 years
- Interface: single 8-bit parallel I/O; address/data multiplexing not required
- Protection: hardware block-protection features via status register
- Packaging: common 48-pin package types (e.g., TSOP/LQFP)
- Intended use: code/storage boot memory in microcontroller-based systems
Note: exact package options and minor feature details can vary by supplier and revision.
- Density: 64 Mbit (8 Mbyte), 8-bit parallel NOR flash
- Access/erase: 70 ns read, sector erase 64 KB, page program (typically 256 bytes), chip erase option
- Voltage: VCC 2.7–3.6 V (nominal ~3.0 V)
- Temperature: -40°C to 85°C
- Endurance/retention: ~100,000 erase cycles per sector; data retention ~20 years
- Interface: single 8-bit parallel I/O; address/data multiplexing not required
- Protection: hardware block-protection features via status register
- Packaging: common 48-pin package types (e.g., TSOP/LQFP)
- Intended use: code/storage boot memory in microcontroller-based systems
Note: exact package options and minor feature details can vary by supplier and revision.
Pinout
- Pin count: 48 pins
- Function: 64-Mbit parallel NOR flash memory (8-bit data bus) used for non-volatile storage of firmware/code; provides standard NOR flash interface with address lines (A0–A23) and control signals CE#, OE#, WE# (LB/UB not always used on all variants).
- Function: 64-Mbit parallel NOR flash memory (8-bit data bus) used for non-volatile storage of firmware/code; provides standard NOR flash interface with address lines (A0–A23) and control signals CE#, OE#, WE# (LB/UB not always used on all variants).
Manufacturer
- Manufacturer: STMicroelectronics (ST)
- What kind of company: A multinational semiconductor company (headquartered in Geneva, Switzerland) that designs and manufactures integrated circuits and semiconductor devices, including NOR flash memory.
- What kind of company: A multinational semiconductor company (headquartered in Geneva, Switzerland) that designs and manufactures integrated circuits and semiconductor devices, including NOR flash memory.
Application
- Boot memory and firmware storage for microcontrollers/SoCs
- Execute-in-place (XIP) code storage in embedded systems
- Automotive ECUs and safety-critical modules
- Consumer electronics (set-top boxes, TVs, digital cameras, printers)
- Industrial and networking equipment
- Medical devices requiring reliable non-volatile firmware
- Execute-in-place (XIP) code storage in embedded systems
- Automotive ECUs and safety-critical modules
- Consumer electronics (set-top boxes, TVs, digital cameras, printers)
- Industrial and networking equipment
- Medical devices requiring reliable non-volatile firmware
Package
48-pin TSOP II (TSOP-48) package.
