M29W800FT70N3E - 8Mbit 70ns Parallel NOR Flash | Micron
部品番号: M29W800FT70N3E ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.95 | $29.50 |
| 100 | $2.6 | $260.00 |
| 500 | $2.3 | $1,150.00 |
| 1,000 | $2.05 | $2,050.00 |
M29W800FT70N3E 概要
Parallel NOR Flash is a nonvolatile memory technology in which every cell connects directly to a bit line, enabling random access with short, deterministic read latency. Within the memory hierarchy, it sits in the code-storage class alongside serial NOR (SPI) and NAND Flash, but unlike NAND it is byte-addressable and execute-in-place (XIP) capable, which is why boot ROMs in microcontroller and DSP systems have historically used parallel NOR devices like the M29W800 family.
Key differentiating features of this device include the 70 ns access time over the full 2.7 V to 3.6 V operating range, the top-boot-block architecture (the FT suffix denotes top boot block, so the boot code resides at the highest addresses), and dual x8/x16 bus operation selected by the BYTE pin. The M29W800 family descends from the STMicroelectronics/Numonyx M29W product line acquired by Micron, preserving broad legacy design-in bases.
Technical depth: the device uses a single-supply architecture in which program and erase operations are performed at VCC (2.7 V to 3.6 V) without a separate high-voltage pump rail on the board. Command-set programming follows the industry-standard M29 command interface, and a status/polling scheme lets the host CPU monitor program and erase cycles. Block protection allows hardware locking of critical boot blocks to prevent accidental corruption.
Typical applications include boot-code storage in industrial PLCs, set-top boxes and network routers, parameter storage in automotive body electronics and instrumentation clusters, and firmware storage in legacy telecom line cards where a 48-TSOP I parallel footprint is already committed on the PCB.
Design consideration: because the part is supplied in the 48-TSOP I (0.5 mm pitch) package, ensure a proper reflow profile per the manufacturer packing/handling documentation and keep address/data bus trace lengths matched to avoid sampling errors at fast access times.
This page synthesizes distributor stock data, family cross-references, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, as of 2026-09-02.
ドロップイン代替品: M29W800FT70N3E — 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: M29W800FT70N3E （同一形状・フットプリント） — 相違点: Memory Type, Interface, Package, Density, Organization.
クイック比較ツール — 並列比較する代替部品を選択:
M29W800FT7AN3F
✅ ドロップイン📋 参考代替品（カタログ未掲載）
M29W800FB70N3E
✅ ドロップイン✓ 在庫あり
$0.95 / 個
データシートを見る →M29F800FT55N3E2
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$4.98 / 個
データシートを見る →M29W400FT55N3E
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.8 / 個
データシートを見る →M29W320DT70N3F
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.95 / 個
データシートを見る →M29W128GL70N3E
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$8.65 / 個
データシートを見る →M29W800FT70N3E 仕様
| メモリタイプ | NOR Flash (Parallel) |
| Density | 8 Mbit |
| メモリ構成 | 1M x 8 / 512K x 16 |
| Access Time | 70 ns |
| Supply Voltage (VCC) | 2.7 V to 3.6 V |
| Programming / Erase Supply | Single supply at VCC (2.7 V to 3.6 V) |
| Boot Block Location | Top boot block (FT variant) |
| Bus Width | 8-bit or 16-bit (BYTE pin selectable) |
| インターフェース | Parallel, address/data bus |
| 動作温度 | -40C to +125C |
| パッケージ | 48-TSOP I (12 x 20 mm, 0.5 mm pitch) |
| 実装タイプ | Surface Mount |
M29W800FT70N3E 48-tsop i (12 x 20 mm, 0.5 mm pitch) ピン配置ガイド
M29W800FT70N3E (48-tsop i (12 x 20 mm, 0.5 mm pitch) 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: M29W800FT70N3E.
詳細は データシート をご参照ください。
主な用途
M29W800FT70N3E の用途: 6 件s: Boot Code Storage in Industrial Controllers, Set-Top Box and Router Firmware Memory, Automotive Body Electronics and Instrumentation, Legacy Telecom Line Card Firmware, Test and Measurement Instrument Storage, Embedded Systems Retrofit and EOL Substitution.
Boot Code Storage in Industrial Controllers
PLCs, motor drives, and industrial controllers require a deterministic, byte-addressable code memory that the CPU can execute from immediately after reset. The M29W800FT70N3E fits this role with its 70 ns access time, which supports zero-wait-state reads on many 3.3 V processor buses, and its single 2.7 V to 3.6 V supply that simplifies power sequencing in industrial 3.3 V rails. The top boot block (FT architecture) places bootloader code at the top of the 8 Mbit map where the CPU begins fetching, and hardware block protection prevents accidental erasure of the boot image by application firmware updates. Its -40C to +125C rating covers factory-floor temperature extremes, and the x8/x16 selectable bus width lets one firmware toolchain serve both 8-bit and 16-bit controller variants on the same PCB footprint.
おすすめ
Set-Top Box and Router Firmware Memory
Network routers, modems, and set-top boxes traditionally store bootloader and recovery firmware in parallel NOR Flash because the code must be executable in place (XIP) before DRAM initialization. The M29W800FT70N3E provides 8 Mbit (512K x 16) of XIP-capable storage with a 70 ns access time, fast enough for common 3.3 V embedded CPUs without wait states. The 2.7 V to 3.6 V supply range tolerates rail sag common in consumer power supplies, while the 48-TSOP I package fits legacy board layouts. Command-set program/erase at VCC eliminates a separate programming rail, and block-level protection secures the bootloader partition when the end user performs over-the-air updates to the main firmware image stored elsewhere.
おすすめ
Automotive Body Electronics and Instrumentation
Instrument clusters, body control modules, and gateway ECUs store calibration data and boot firmware in nonvolatile parallel memory rated for automotive temperature spans. The M29W800FT70N3E operates from -40C to +125C per the family ordering information, matching the -40C to +85C and +125C interior/under-hood requirements of many body-electronics modules. Its 2.7 V to 3.6 V single-supply operation aligns with automotive 3.3 V logic rails, and the 70 ns access time supports direct memory-mapped code and parameter reads. Hardware boot-block protection safeguards calibration images against corruption during low-voltage cranking events, while the x8/x16 selectable bus lets the same part serve both 8-bit and 16-bit microcontroller buses across platform derivatives.
おすすめ
Legacy Telecom Line Card Firmware
Telecom line cards, backplane controllers, and DSL access equipment designed in the STMicroelectronics/Numonyx era specified the M29W800 in the 48-TSOP I footprint for bootloader and configuration storage. The M29W800FT70N3E is a maintenance-replacement part for these sockets: it preserves the M29W command set, the 70 ns timing budget, and the exact 8 Mbit top-boot memory map, so no driver or firmware changes are needed when replacing aging stock. The parallel interface retains deterministic access latency required for in-service diagnostics, and the 2.7 V to 3.6 V supply range is compatible with the 3.3 V rails used throughout telecom shelves. Using the Findchips-cross-referenced M29W800FT7AN3F alongside this part gives buyers a second qualified source for line-card sustaining programs.
おすすめ
Test and Measurement Instrument Storage
Oscilloscopes, multimeters, and bench power supplies store boot firmware, calibration constants, and user settings in parallel NOR Flash. The M29W800FT70N3E suits these designs with its 8 Mbit capacity (enough for a bootloader plus parameter blocks), 70 ns access time that keeps power-up calibration reads fast, and -40C to +125C operation for unconditioned lab and field environments. The BYTE pin allows x8 access for serial-configuration-style reads and x16 access for code execution, giving instrument firmware flexibility in how it partitions the array. Hardware block protection prevents accidental erasure of the calibration sector during firmware field updates, a common failure mode in instruments that reprogram their settings partition in service.
おすすめ
Embedded Systems Retrofit and EOL Substitution
When a legacy PCB based on the STMicroelectronics/Numonyx M29W800 loses its original source, the Micron M29W800FT70N3E serves as the continuity part: it was produced on the same acquired production line with the same command set, 70 ns timing, top-boot map, and 48-TSOP I footprint. This makes it an end-of-life substitution for obsolete M29W800 order codes without PCB redesign. Its single 2.7 V to 3.6 V supply and standard parallel interface also let design teams requalify it on boards that originally used 5 V flash families by simply confirming 3.3 V bus compatibility. Pairing it with the cross-referenced M29W800FT7AN3F provides dual-channel sourcing for long-lifetime industrial and medical equipment sustaining programs.
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: M29W800FT70N3E — 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 | M29W800FT7AN3F | M29W800FB70N3E | M29F800FT55N3E2 | M29W400FT55N3E | M29W320DT70N3F |
|---|---|---|---|---|---|---|
| Package | 48-TSOP I | 48-TSOP I - same | 48-TSOP I - same | 48-TSOP I - same | 48-TSOP I - same | 48-TSOP I - same |
| Brand | Micron Technology | Numonyx Memory Solutions | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Density | 8 Mbit | 8 Mbit | 8 Mbit | 8 Mbit | 4 Mbit | 32 Mbit |
| Access Time | 70 ns | 70 ns | 70 ns | 55 ns | 55 ns | 70 ns |
| Boot Block Location | Top boot block (FT) | Top boot block | Bottom boot block (FB) | Top boot block (FT) | Top boot block (FT) | Top boot block (DT) |
| Bus Organization | x8 / x16 | x8 / x16 | x8 / x16 | x8 / x16 | x8 / x16 | x16 |
主な差別化要因
- Single-supply 2.7 V-3.6 V program/erase （vs M29F800FT55N3E2)
- Top boot block for XIP boot maps （vs M29W800FB70N3E)
- Dual-source die heritage （vs M29W800FT7AN3F)
- Wide -40C to +125C operating range （vs M29W400FT55N3E)
設計ノート
The 48-TSOP I package uses a 0.5 mm lead pitch in a 12 x 20 mm body. Specify a land pattern matching the datasheet recommended footprint and use a reflow profile per Micron packing/handling documentation; the thin TSOP body is moisture-sensitive, so observe the MSL floor-life requirement and bake per J-STD-033 if the dry-pack bag is opened. Keep a silkscreened pin-1 marker aligned to the beveled corner of the package to prevent 180-degree misinsertion during rework.
At the 70 ns access grade, address and data bus round-trip delays plus CPU setup time must remain within the timing budget. Estimated: with a typical 20-30 ns CPU access-cycle allowance, keep bus trace lengths matched and add 22-33 ohm series termination on rising-edge address lines when bus length exceeds about 15 cm. Pull the BYTE pin firmly to the correct rail through a resistor (not left floating) to avoid bus contention on Q15/A-1 during x8 mode operation.
Two recurring field failures with this part: (1) substituting the FB bottom-boot variant without re-addressing firmware - the boot code will not be found because the protected boot blocks sit at the opposite end of the array; (2) ignoring status-bit polling during program/erase - issuing a read or command before the cycle completes corrupts data. Always poll the status bits after each program/erase command and enforce the datasheet block-erase timeout in software. Verify WP#/protection pin strapping so production programming fixtures can modify protected blocks only when intended.
コンプライアンス情報
Compliance statements for this exact ordering code were not present in the captured web data. Verify RoHS/REACH status from Micron material declarations on the official product page. AEC-Q100 qualification not stated; -40C to +125C operating range is documented in the family ordering information.
