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M29W256GH70N6E
+物料清單IC FLASH 256MBIT PARALLEL 56TSOP
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製造商美光科技股份有限公司。
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製造商部分 #M29W256GH70N6E
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規格
| 屬性 | 價值 |
| PartStatus | Obsolete |
| BaseProductNumber | M29W256 |
| DigiKeyProgrammable | Verified |
| MemoryType | Non-Volatile |
| MemoryFormat | FLASH |
| Technology | FLASH - NOR |
| MemorySize | 256Mbit |
| MemoryOrganization | 32M x 8, 16M x 16 |
| MemoryInterface | Parallel |
| WriteCycleTime-Word,Page | 70ns |
| Voltage-Supply | 2.7V ~ 3.6V |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package | 56-TFSOP (0.724", 18.40mm Width) |
| SupplierDevicePackage | 56-TSOP |
| Packaging | Tray |
| AccessTime | 70 ns |
概述
Description
- Capacity: 256 Mb (32 MB).
- Interface: parallel 8‑bit data bus; extensive address space for random access.
- Speed/Voltage: typical access time around 70 ns; operates from 2.7–3.6 V.
- Package: commonly 48‑pin, suitable for surface-mount packages (e.g., TSOP/TQFP variants).
- Features: random read, block/sector erase and program operations; suitable for firmware/code storage.
- Applications: boot ROMs and external flash for embedded systems, microcontroller/SoC firmware storage.
- Durability: finite program/erase cycles (typical NOR flash in the 10^4–10^5 range) with long data retention (years to decades under proper conditions).
If you’re using it, consult the official datasheet for pinout, electrical characteristics, timing (READ/WRITE/ERASE), sector sizes, and command set.
Equivalent
- Spansion S29GL256N (or S29GL256P)
- Macronix MX29GL256E
- Winbond W29GL256G
- ISSI IS29GL256
Note: verify exact package/pinout and voltage for cross-reference.
Features
- Density: 256 Mbit NOR flash (32 MBytes)
- Interface: 8-bit parallel data bus
- Speed: 70 ns read access time
- Voltage: VCC 2.7–3.6 V (single-supply operation)
- Temperature: Industrial range (-40°C to +85°C)
- Packaging: 48-pin TSOP II (typical)
- Operations: Random read, block/sector erase and program
- Protection: Sector/block protection options; hardware/software security features
- Power management: Deep power-down and standby modes
- Endurance/Retention: Typical erase/program endurance up to ~100k cycles; long data retention
- Reliability: Standard flash reliability features (ECC-friendly, etc.)
Note: exact sector sizes and erase times vary by device revision; consult the datasheet for precise block sizes and timings.
Pinout
- Function: 256-Mbit parallel NOR flash memory (3.3V) with an 8-bit data bus (DQ0–DQ7). It uses address inputs A0–A24 and control signals CE#, OE#, WE# for random-access read and block/sector erase/program operations.
Manufacturer
- What kind of company: A Taiwanese semiconductor company that designs and manufactures non-volatile memory products, including NOR/NAND flash and other memory ICs for automotive, consumer, and industrial markets.
Application
- Firmware/boot code storage for embedded MCUs/SoCs and BIOS
- Execute-in-place (XIP) firmware for consumer electronics (set‑top boxes, printers, cameras, smart devices)
- Automotive ECUs and infotainment systems requiring reliable nonvolatile firmware
- Networking equipment firmware images and boot ROMs (routers, switches)
- Industrial control, medical devices and IoT gateways needing rugged, nonvolatile program memory
These use cases leverage NOR flash’s fast random reads and reliable nonvolatile storage for code and firmware.
Package
Frequently Asked Questions
Q: What is the memory organization of this NOR Flash device?
A: It supports 32M x 8 (byte mode) or 16M x 16 (word mode) configurations for flexible system design.
Q: What is the typical supply voltage range for the M29W256GH70N6E?
A: The operating voltage range is 2.7V to 3.6V, suitable for low-power embedded applications.
Q: Does this component support page or word write operations?
A: Yes, it features a 70ns write cycle time per word or page for efficient programming.
Q: What is the access time of this Flash memory?
A: The access time is 70 ns, enabling fast read operations in high-speed parallel interfaces.
Q: Is this part suitable for surface-mount assembly?
A: Yes, it comes in a 56-TSOP surface-mount package for automated PCB manufacturing.
Q: What is the operating temperature range?
A: It operates from -40°C to +85°C, making it suitable for industrial-temperature environments.
