M29W128GL70N3E - 128Mb 3V NOR Flash 70ns TSOP-56 | Micron
部品番号: M29W128GL70N3E ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.4 | $114.00 |
| 100 | $10.25 | $1,025.00 |
| 500 | $9.4 | $4,700.00 |
| 1,000 | $8.65 | $8,650.00 |
M29W128GL70N3E 概要
Parallel NOR flash is a nonvolatile memory technology that allows direct, byte-addressable random access, making it the traditional choice for boot code and firmware storage in embedded systems. In the memory hierarchy, NOR flash sits alongside SPI NOR and NAND flash: NOR offers slow write throughput but the fastest random-read access and execute-in-place (XIP) capability, which microcontrollers and processors require to boot directly from the memory array without copying code to RAM.
Key features of the M29W128GL family include a wide 2.7V to 3.6V single supply range (3V/3.3V class), 70 ns initial access time suitable for zero-wait-state operation on many embedded buses, and a software-selectable x8 or x16 bus width that lets one footprint serve both 8-bit and 16-bit host controllers. Block-protected sectors and temporary unprotection allow safe field firmware updates.
Architecturally, the device is organized as asymmetric boot blocks, with the GL suffix denoting bottom boot block organization. Commands, statuses, and data share the same address/data bus in a command-user-interface-driven protocol standard across the M29W family, which simplifies migration between densities within the same package.
Typical applications include boot firmware storage for automotive ECUs, industrial PLCs, networking line cards, and set-top boxes, where the -40C to +125C operating range and automotive qualification of this ordering code are essential.
Design consideration: with a 70 ns access time, verify that the host bus timing budget accommodates output enable and chip enable access times; at full x16 operation, add 0.1 uF plus bulk decoupling close to the VCC pins to suppress switching noise on the shared bus.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet. Prices shown are estimates as of 2026-09-02.
ドロップイン代替品: M29W128GL70N3E — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: M29W128GL70N3E （同一形状・フットプリント） — 相違点: Organization, Interface, Package, Density, Supply Voltage.
クイック比較ツール — 並列比較する代替部品を選択:
M29W128GL70N6E
✅ ドロップイン📋 参考代替品（カタログ未掲載）
M29W128GH70N3E
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →M29W064FT70N3E
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →M29W128GL70N3E 仕様
| メモリタイプ | NOR Flash (Parallel) |
| Density | 128 Mbit |
| メモリ構成 | 16M x8 / 8M x16 |
| Access Time | 70 ns |
| 電源電圧 | 2.7 V to 3.6 V (3V/3.3V class) |
| インターフェース | Parallel |
| Boot Block Configuration | Bottom boot (GL suffix) |
| 動作温度 | -40C to +125C |
| パッケージ | 56-pin TSOP |
| 実装タイプ | Surface Mount |
| Packaging | Tray |
| Automotive Qualification | Automotive grade ordering code (N3E) |
| Bus Width Mode | Software-selectable x8/x16 (BYTE# pin) |
| RoHS ステータス | Compliant |
M29W128GL70N3E 56-pin tsop ピン配置ガイド
M29W128GL70N3E (56-pin tsop パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: M29W128GL70N3E.
詳細は データシート をご参照ください。
主な用途
M29W128GL70N3E の用途: 6 件s: Automotive ECU Boot Firmware, Industrial PLC and Motor Control Firmware, Networking Line Cards and Routers, Set-Top Box and Digital TV Boards, Medical Device Firmware Storage, Aerospace and Rugged Instrumentation.
Automotive ECU Boot Firmware
The M29W128GL70N3E stores boot code and calibration firmware in engine, body, and chassis ECUs, where the N3E automotive ordering code and -40C to +125C range meet AEC-grade environmental expectations. Its 70 ns access time allows the microcontroller to fetch reset vectors directly from NOR at power-up (execute-in-place), and the bottom boot block organization places the boot sector at address 0 where most automotive MCUs vector from. Hardware block protection secures the boot region against corruption during field reprogramming of application sectors. Placed on the 16-bit bus with 0.1 uF decoupling per VCC pin, it delivers deterministic read latency that parallel NOR is uniquely suited to provide versus SPI NOR serial alternatives.
おすすめ
Industrial PLC and Motor Control Firmware
Programmable logic controllers and industrial drives boot from parallel NOR because code must execute immediately at power-up without a loader. The M29W128GL70N3E's 2.7V to 3.6V tolerance accommodates noisy industrial 3.3V rails with brownout margin, and its 128Mbit (16 MB) density holds protocol stacks plus user logic. The software-selectable x8/x16 bus width lets one PCB design serve both 8-bit legacy CPUs and 16-bit modern MCUs. Hardware sector protection allows safe runtime firmware updates over the fieldbus: application blocks are erased and rewritten while protected boot blocks remain untouched, ensuring the device always recovers to a bootable state after a failed update.
おすすめ
Networking Line Cards and Routers
Router and switch line cards use parallel NOR for boot ROM and golden-image storage, since network equipment must recover from corrupted main firmware after power faults. The M29W128GL70N3E's 70 ns access time supports fast post-reset code fetch, and its 128Mbit capacity stores a compressed rescue image alongside the bootloader. The wide -40C to +125C temperature range covers unventilated telecom cabinets and outdoor aggregation nodes. Designers typically pair it with the RP# (reset/power-down) pin tied to the system supervisor so the flash is held in reset during rail sequencing, preventing spurious writes while 3.3V stabilizes during hot-swap insertion of the card.
おすすめ
Set-Top Box and Digital TV Boards
Consumer set-top boxes and digital TV mainboards rely on parallel NOR for immutable bootloader storage while the large application image resides in NAND or eMMC. The M29W128GL70N3E provides the deterministic boot path: the SoC fetches first-stage code from the bottom boot blocks at address zero within 70 ns of chip-select. Its 3V supply integrates directly with the common 3.3V rail, and BYTE#-based x8 mode saves address/data routing on cost-sensitive two-layer sections of the board. Hardware write protection driven by WP# prevents accidental corruption of the boot image when application software writes to the shared bus during normal operation.
おすすめ
Medical Device Firmware Storage
Infusion pumps, patient monitors, and diagnostic instruments demand code storage that survives power interruption and preserves audit-critical firmware integrity. The M29W128GL70N3E offers bit-stable nonvolatile storage with hardware block protection so the validated firmware image cannot be modified at runtime, supporting design controls for software-locked medical devices. The 70 ns access time removes boot-latency concerns in devices that must display status quickly after power-on, and the -40C to +125C rating covers ethylene-oxide sterilization and cold-chain transport. Designers often mirror the boot image in two sectors and verify checksums at startup, a pattern the 128Mbit density comfortably accommodates.
おすすめ
Aerospace and Rugged Instrumentation
Test instruments, avionics ground support, and rugged data recorders use parallel NOR for parameter tables and boot code that must retain data across wide temperature excursions and vibration. The M29W128GL70N3E's TSOP-56 gull-wing leads solder reliably onto conformally coated boards, and its -40C to +125C specification covers unheated equipment bays. The shared command-user-interface protocol inherited from the M29W family means board software ported from smaller M29W devices runs unchanged, reducing qualification effort. Because the array is bit-addressable, calibration constants can be updated sector-by-sector in the field without erasing boot code, using the temporary block-unprotection feature.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: M29W128GL70N3E — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | M29W128GL70N6E | M29W128GH70N3E | M29W064FT70N3E |
|---|---|---|---|---|
| Package | 56-TSOP | 56-TSOP - same | 56-TSOP - same | 56-TSOP - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Density | 128 Mbit | 128 Mbit | 128 Mbit | 64 Mbit |
| Access Time | 70 ns | 90 ns | 70 ns | 70 ns |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Boot Block Location | Bottom boot | Bottom boot | Top boot | Top boot |
主な差別化要因
- Fastest grade in the family at 70 ns access （vs M29W128GL70N6E)
- Bottom boot block placement for vector-at-zero MCUs （vs M29W128GH70N3E)
- Full 128Mbit density in TSOP-56 （vs M29W064FT70N3E)
設計ノート
On a 70 ns parallel bus, signal integrity limits usable trace length. Keep the address/data bus under 10 cm where possible, and match trace lengths within 5 mm on the data lines to avoid skew at full x16 operation. Series-terminate address lines with 22-33 ohm resistors if stubs or connectors exist on the bus. Verify CE# access time (tCE) and OE# access time (tOE) against your host controller datasheet with worst-case temperature derating at +125C, where drive strength of both the flash and the MCU is lowest.
Provide one 0.1 uF ceramic capacitor per VCC pin placed within 3 mm of the TSOP lead, plus one 4.7-10 uF bulk capacitor per device. Program and erase operations draw burst currents on the 3.3V rail; a soft rail shared with a switching load can cause spurious resets of the memory during write bursts. Tie RP# to a supervisor output so the device stays in reset/power-down until VCC is stable - this prevents corrupt writes during power sequencing and reduces standby consumption in battery-backed designs.
BYTE# must not be left floating: strap it high for x16 or low for x8 per the bus design, or reads return undefined data. Remember that in x8 mode the lowest address bit moves to the dedicated A-1 input, so the address mapping differs between modes - firmware that hardcodes x16 addresses will fail in x8 mode. Also, do not issue erase commands to protected boot sectors; verify the protection status via the autoselect command sequence before any field firmware update routine claims success.
コンプライアンス情報
RoHS compliant per DigiKey/Mouser distributor listings. Formal REACH and material declarations should be obtained from Micron's compliance documentation portal.
