M29W640GB70ZA3E - 64Mb NOR Flash 70ns TFBGA-48 | Micron
部品番号: M29W640GB70ZA3E ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.65 | $3.65 |
| 10 | $3.45 | $34.50 |
| 100 | $3.28 | $328.00 |
| 500 | $3.21 | $1,605.00 |
| 1,000 | $3.15 | $3,150.00 |
M29W640GB70ZA3E 概要
Parallel NOR flash is a nonvolatile memory technology that connects directly to a microprocessor address and data bus, allowing code to be executed in place (XIP) without first copying it to RAM. Within the memory hierarchy, it sits in the nonvolatile storage family alongside serial NOR (SPI) and NAND flash; its distinguishing traits are random access, byte-level read granularity, and long data retention, making it the classic boot-memory choice.
Key features include a 70 ns address-to-data access time suited to zero-wait-state bus masters, block-protected architecture with the GB bottom boot block organization, and a VPP/WP# pin that accelerates program/erase or provides hardware write protection. RoHS-compliant packaging and 100,000 program/erase cycle endurance support long-life industrial designs.
Architecturally, the M29W640GB family uses Micron's 3 V NOR core with uniform or boot-block sector maps, a command-set interface compatible with standard flash programming algorithms, and status polling via data toggling. The x16 bus interface simplifies connection to 16-bit MCU and processor external memory controllers.
Typical applications include boot-code storage in industrial control, automotive body modules (using automotive-certified family members), set-top boxes, and networking equipment where in-place code execution is required.
Design consideration: reserve the 12 V VPP capability only on boards that can safely source it; otherwise tie VPP/WP# per datasheet recommendations to enable write protection.
This page synthesizes distributor pricing, same-footprint alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: M29W640GB70ZA3E — 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。
クイック比較ツール — 並列比較する代替部品を選択:
M29W640GH70ZA3E
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M29W640GT70ZA3E
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M29W640GL70ZA3E
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M29W640GB70ZA3F
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M29W640GB70ZA3E 仕様
| メモリタイプ | NOR Flash |
| Density | 64 Mbit |
| メモリ構成 | 4 M x 16 |
| インターフェース | Parallel |
| Access Time | 70 ns |
| Supply Voltage VCC | 2.7 V to 3.6 V |
| Program/Erase Voltage VPP | 12 V (fast program/erase) |
| Block Organization | Boot block (GB = bottom boot block) |
| 動作温度 | -40C to +125C |
| パッケージ | 48-ball TFBGA (ZA), 6 x 8 mm, 0.80 mm pitch |
| 実装タイプ | Surface Mount |
| Pins / Balls | 48 |
| RoHS ステータス | Compliant |
| Technology Family | M29W640GB/GH/GL/GT 3V Parallel NOR Flash |
M29W640GB70ZA3E 48-ball tfbga (za), 6 x 8 mm, 0.80 mm pitch ピン配置ガイド
M29W640GB70ZA3E (48-ball tfbga (za), 6 x 8 mm, 0.80 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: M29W640GB70ZA3E.
詳細は データシート をご参照ください。
主な用途
M29W640GB70ZA3E の用途: 6 件s: Industrial PLC Boot Code Storage, Networking Equipment Firmware Storage, Set-Top Box and Consumer AV Boot Memory, Automotive Body and Comfort Modules, Test and Measurement Instrumentation, Embedded Firmware Field Upgrade Systems.
Industrial PLC Boot Code Storage
Industrial programmable logic controllers require nonvolatile boot memory that executes code in place from the processor's external bus. The M29W640GB70ZA3E fits this role with its 70 ns access time, which supports zero-wait-state reads from typical 16-bit industrial MCUs, and its bottom boot block map that places the reset vector code in small, independently erasable sectors. The -40C to +125C operating range covers sealed control cabinets near drives and power electronics. The VPP/WP# pin can be driven low to hardware-lock the boot image against accidental writes from field firmware updates. Program and erase from the 2.7 V to 3.6 V VCC rail alone keeps the power design simple, with 12 V VPP optional for faster factory programming.
おすすめ
Networking Equipment Firmware Storage
Routers, switches, and line cards store bootloader and firmware images in parallel NOR flash mapped at the reset vector. The M29W640GB70ZA3E provides 64 Mbit (8 MB in x16 mode) - enough for a bootloader plus a compressed OS image - with 70 ns random access for early boot code before DRAM is initialized. Its standard flash command-set interface simplifies driver support in U-Boot and similar bootloaders. The block-protected architecture lets operators mark the bootloader region read-only while firmware partitions remain field-updatable. Compared with SPI NOR, the parallel x16 bus delivers roughly an order of magnitude higher read bandwidth during code execution, and the 48-ball TFBGA 6 x 8 mm footprint saves board area in dense switch designs.
おすすめ
Set-Top Box and Consumer AV Boot Memory
Set-top boxes and consumer audio/video platforms use parallel NOR flash as the immutable boot device that the SoC fetches from at power-on. The M29W640GB70ZA3E's 3 V single-rail operation matches typical consumer power trees, and its 70 ns access time allows direct XIP execution of the early boot loader. The bottom boot block organization concentrates frequently updated configuration sectors at address 0, while larger blocks hold the immutable loader. The 6 x 8 mm 48-ball TFBGA fits tight consumer PCB layouts under RF shields. Because consumer designs cycle power frequently, the flash's block-protection feature prevents corruption of the boot image during brownout events, complementing the system reset supervisor on the RESET# pin.
おすすめ
Automotive Body and Comfort Modules
The M29W640GB family datasheet notes automotive-certified parts are available, and this 64 Mbit NOR flash is used in body control modules, instrument clusters, and gateway ECUs that boot code in place. The -40C to +125C operating range of the E-grade part covers under-hood and near-engine ambient conditions. Its 70 ns access time supports direct execution from the microcontroller's external bus without wait states in many 16-bit automotive MCUs. The hardware write protect via VPP/WP# protects calibration and boot data against unintended writes during fault conditions. For new automotive designs, request the AEC-Q100-qualified ordering code from Micron's automotive channel, as PPAP documentation and ordering suffixes differ from the industrial part.
おすすめ
Test and Measurement Instrumentation
Bench instruments, data acquisition units, and scope front-ends store calibration constants, firmware, and boot code in nonvolatile memory. The M29W640GB70ZA3E's 100,000-cycle program/erase endurance accommodates periodic calibration updates, while its 70 ns read access lets the instrument CPU boot directly from flash at power-up without a RAM copy stage. The x16 parallel interface integrates cleanly with the DSP or MCU memory controllers common in measurement platforms, and the 48-ball TFBGA package withstands vibration better than leaded TSOP in portable handheld instruments. Because calibration data occupies only a few small boot sectors, the bottom boot block map keeps those updates fast and isolated from the main application image blocks.
おすすめ
Embedded Firmware Field Upgrade Systems
Systems requiring field firmware updates benefit from the M29W640GB70ZA3E's software block protection and command-set programming interface. A dual-image scheme reserves half the 64 Mbit array for a golden image, letting the bootloader roll back if an update fails - the 70 ns access time keeps both images directly executable. The VPP/WP# pin can gate write access entirely during normal operation, unlocking only when the update harness asserts it, which protects against malicious or accidental erasure. Standard flash command-set compatibility means mature open-source drivers (U-Boot, Linux MTD CFI) program the device without custom code, shortening qualification cycles for industrial and networking products that ship with over-the-air or service-port update capability.
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: M29W640GB70ZA3E — 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 | M29W640GH70ZA3E | M29W640GL70ZA3E | M29W640GT70ZA3E | M29W640GB70N3E |
|---|---|---|---|---|---|
| Package | 48-ball TFBGA (ZA) 6 x 8 mm | 48-ball TFBGA (ZA) - same | 48-ball TFBGA (ZA) - same | 48-ball TFBGA (ZA) - same | 48-pin TSOP (different footprint) |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Density | 64 Mbit | 64 Mbit | 64 Mbit | 64 Mbit | 64 Mbit |
| Access Time | 70 ns | 70 ns | 70 ns | 70 ns | 70 ns |
| Supply Voltage (VCC) | 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 | 2.7 V to 3.6 V |
| Block Organization | Bottom boot block (GB) | Top boot block (GH) | Uniform block (GL) | Top boot block (GT) | Bottom boot block (GB) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
主な差別化要因
- Bottom boot block map protects reset-vector code （vs M29W640GH70ZA3E)
- Identical footprint across block-map variants （vs M29W640GL70ZA3E)
- 12 V VPP fast program/erase option （vs M29W640GB70N3E (same die, TSOP))
設計ノート
The VPP/WP# pin is dual-function: tying it to 12 V speeds program/erase, while driving it per the datasheet logic levels enables hardware write protection. Do not leave this pin floating; a floating VPP/WP# can cause unpredictable write behavior during power transients. If your board has no 12 V rail and no protection requirement, follow the datasheet's recommended static connection so the pin is at a defined level at all times, including during VCC ramp-up.
Keep the parallel address/data bus traces length-matched within a few hundred mils for 70 ns access timing margins, and route them away from clock lines. At 3 V, a 22 ohm series resistor on each data line damps reflections on long buses and reduces undershoot that could violate the flash input protection clamp ratings. Terminate lightly loaded point-to-point address lines only if scope measurements show ringing beyond datasheet VIH/VIL margins.
The device draws program/erase surge currents from VCC that are significantly higher than read current. Place a 100 nF ceramic capacitor within 2 mm of each VCC ball and a 4.7 uF to 10 uF bulk capacitor near the device so VCC droop during block erase does not corrupt in-progress programming. Ensure the 3 V regulator can supply the peak program/erase current with margin; consult the family datasheet ICC tables for the exact values for your temperature and VCC corner.
The 48-ball TFBGA (0.80 mm pitch, 6 x 8 mm) requires an NSMD pad design with solder mask defined openings per the datasheet land-pattern appendix. Use a standard SAC305 reflow profile and inspect with X-ray or angled AOI since joints under the package body are hidden. Avoid reworking this BGA more than twice - repeated reflow degrades ball reliability, which matters for -40C to +125C industrial cycles.
コンプライアンス情報
Distributor listings and Micron family datasheet ordering information identify the E-suffix part as RoHS compliant. REACH, halogen-free, and conflict-minerals status not stated in provided data; verify with Micron product compliance documents. Automotive-certified parts exist within the M29W640GB/GH/GL/GT family per the datasheet.
