STR912FAW44X6 - ARM966E-S MCU 96MHz 512KB Flash LQFP-128
部品番号: STR912FAW44X6 ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.95 | $1,395.00 |
| 500 | $12.1 | $6,050.00 |
| 1,000 | $10.85 | $10,850.00 |
STR912FAW44X6 概要
An ARM9-based microcontroller is a 32-bit RISC processor with a Harvard architecture, vectored interrupts, and a rich peripheral set, suitable for real-time control and connected embedded systems. In the broader taxonomy, this device is a microcontroller (MCU) -> embedded MPU/MCU family -> ARM microcontroller -> ARM9 class, and it integrates tightly with power management ICs, sensors, and communication transceivers in a complete embedded node.
Key features include 512 KB dual-bank Flash for in-field firmware updates, 96 KB SRAM, on-chip 10/100 Ethernet MAC, USB 2.0 Full-Speed with on-chip PHY, two CAN 2.0B controllers, four 16-bit timers, and a motor-control PWM unit. Industrial-grade peripherals include a 10-bit ADC, hardware crypto accelerator, and external memory bus. The LQFP-128 (14 x 14 mm) footprint supports surface-mount assembly with hand-solder-friendly leads.
The device is built around the ARM966E-S core with a five-stage pipeline, single-cycle MAC, and tightly-coupled memory (TCM) interface, enabling deterministic interrupt response for real-time motor-control loops. Dual-bank Flash and a built-in bootloader support field firmware upgrades without external programmer.
Typical applications include industrial automation controllers, point-of-sale terminals, security and surveillance systems, vending machines, communication gateways, and AC motor drives for appliance and HVAC equipment. The integrated Ethernet, USB, and CAN make it a single-chip node for connected industrial systems.
When designing with this part, allocate proper decoupling near each VDD/VSS pair and observe the 1.8 V core / 3.3 V I/O supply sequencing. Plan for obsolete-status sourcing: ST has declared the STR91x family end-of-life, so new designs should evaluate the recommendation to migrate to STM32-class parts.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in a single datasheet or distributor page.
ドロップイン代替品: STR912FAW44X6 — 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: STR912FAW44X6 （同一形状・フットプリント） — 相違点: ADC, CAN, Ethernet, Operating Temperature, Package.
クイック比較ツール — 並列比較する代替部品を選択:
STR911FAW44X6
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STR912FAW44X6T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STR910FM32X6
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STR912FAW44X6 最大定格＆電気的特性
| Core | ARM966E-S (ARM9-class, 32-bit RISC) |
| 最大クロック周波数 | 96 MHz |
| Program Memory | 512 KB Flash (dual-bank) |
| SRAM | 96 KB |
| 電源電圧 | 1.8 V core / 3.3 V I/O |
| パッケージ | LQFP-128 (14 x 14 mm) |
| 実装タイプ | Surface Mount |
| Ethernet | 10/100 MAC (MII/RMII) |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| CAN | 2 x CAN 2.0B controllers |
| Timers | 4 x 16-bit timers |
| ADC | 10-bit |
| Motor Control PWM | Yes (AC motor control) |
| 動作温度 | -40C to +85C (industrial) |
| RoHS ステータス | Compliant |
STR912FAW44X6 lqfp-128 (14 x 14 mm) ピン配置ガイド
STR912FAW44X6 (lqfp-128 (14 x 14 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STR912FAW44X6.
詳細は データシート をご参照ください。
主な用途
STR912FAW44X6 の用途: 6 件s: Industrial Automation Controller, Point-of-Sale Terminal, Security and Surveillance System, AC Motor Drive / Appliance Control, Vending Machine Controller, Communication Gateway / IoT Edge Node.
Industrial Automation Controller
The STR912FAW44X6 fits industrial automation controllers because its ARM966E-S core at 96 MHz and dual-bank 512 KB Flash deliver the deterministic throughput needed for PLC-style logic while supporting field firmware upgrades. The on-chip 10/100 Ethernet MAC plus two CAN 2.0B controllers let the same MCU serve as both an EtherNet/IP node and a CANopen master in a single PCB. The 96 KB SRAM accommodates TCP/IP stacks with margin for Modbus buffers. Plan a heatsink-free design: at 96 MHz the part dissipates roughly 0.5 W, well within the LQFP-128 thermal budget. Compared with an STM32-class replacement, this STR9 offers longer legacy code compatibility but lower energy efficiency.
おすすめ
Point-of-Sale Terminal
The STR912FAW44X6 is well matched to point-of-sale terminals because its integrated USB 2.0 Full-Speed PHY with on-chip transceiver eliminates an external USB chip, saving BOM cost in price-sensitive retail terminals. The 96 MHz ARM9 core runs small embedded Linux or RTOS payment stacks, while the 512 KB dual-bank Flash enables secure firmware A/B updates required by PCI PED validation. With 96 KB SRAM the device hosts a TCP/IP stack plus EMV/NFC drivers. Consider a -40C to +85C industrial grade variant for outdoor kiosk deployments.
おすすめ
Security and Surveillance System
The STR912FAW44X6 suits security and surveillance DVR/NVR peripherals because its 10/100 Ethernet MAC, dual CAN ports, and 96 KB SRAM can simultaneously stream sensor telemetry, drive PTZ commands, and host a web UI on a local network. The 512 KB dual-bank Flash supports remote firmware updates required by physical-security integrators. Hardware crypto acceleration accelerates AES for video-stream authentication. Compared with an ARM7-based NXP LPC2292, this STR9 delivers 30 percent more DMIPS at the same clock for analytics at the edge.
おすすめ
AC Motor Drive / Appliance Control
The STR912FAW44X6 is purpose-built for AC motor drives in appliances and HVAC because the integrated AC motor-control PWM unit plus four 16-bit timers and a 10-bit ADC support sensorless and encoder-based field-oriented control without an external DSP. At 96 MHz the ARM966E-S delivers deterministic interrupt latency for 20 kHz current loops. The 512 KB Flash holds control firmware plus application code, and the LQFP-128 footprint survives the vibration profile of compressor-mounted boards. Plan for 1.8 V core / 3.3 V I/O sequencing at power-up.
おすすめ
Vending Machine Controller
The STR912FAW44X6 serves vending-machine main controllers well because its Ethernet MAC plus USB and CAN peripherals let one chip run MDB payment interfaces, telemetry uploads, and the vending-state machine concurrently. The 96 KB SRAM handles small embedded-Linux stacks for graphical UI rendering on TFT panels. The dual-bank 512 KB Flash simplifies the MDB firmware updates that vending operators require. Compared with older ARM7 designs, this STR9 cuts active power by roughly 25 percent at equivalent throughput.
おすすめ
Communication Gateway / IoT Edge Node
The STR912FAW44X6 fits communication gateways because its integrated 10/100 Ethernet MAC, USB, and dual CAN controllers let a single device bridge industrial fieldbus segments to TCP/IP networks without a companion network processor. The ARM966E-S core at 96 MHz runs a lightweight IP stack with enough headroom for protocol translation. The 512 KB Flash stores firmware for multiple protocol stacks, and the dual-bank layout enables safe OTA upgrades. Designers should budget for external PHY magnetics and ESD protection on the Ethernet and USB lines for industrial EMC compliance.
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: STR912FAW44X6 — 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 | STR911FAW44X6 | STR912FAW44X6T | STR910FM32X6 |
|---|---|---|---|---|
| Package | LQFP-128 (14x14 mm) | LQFP-128 - same | LQFP-128 - same | LQFP-128 - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM966E-S 96 MHz | ARM966E-S 96 MHz | ARM966E-S 96 MHz | ARM966E-S 96 MHz |
| Flash | 512 KB dual-bank | 256 KB (-50%) | 512 KB (same) | 32 KB (-94%) |
| SRAM | 96 KB | 96 KB | 96 KB | 32 KB (-67%) |
| Ethernet | 10/100 MAC | 10/100 MAC | 10/100 MAC | None |
| USB | USB 2.0 FS + PHY | USB 2.0 FS + PHY | USB 2.0 FS + PHY | USB 2.0 FS + PHY |
| CAN | 2 x CAN 2.0B | 2 x CAN 2.0B | 2 x CAN 2.0B | 1 x CAN 2.0B |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
主な差別化要因
- Highest Flash density in the STR91x LQFP-128 family （vs STR911FAW44X6)
- Tray vs Tape-and-Reel packaging variant within the same die （vs STR912FAW44X6T)
- Full peripheral integration in a single ARM9-class MCU （vs STR910FM32X6)
設計ノート
The STR912FAW44X6 requires a 1.8 V core and a 3.3 V I/O supply, with the 1.8 V rail required to come up first or simultaneously with the 3.3 V rail. Place a 10 uF bulk plus 100 nF ceramic decoupling capacitor pair within 5 mm of each VDD/VSS pin pair. Add a ferrite bead between the 3.3 V source and the MCU's analog AVDD pin to keep ADC noise under 1 LSB at 10-bit resolution.
At 96 MHz the typical core dissipation is approximately 0.5 W, well within the LQFP-128 theta_JA of about 50 C/W on a 4-layer 100x100 mm board, yielding roughly 25 C junction temperature rise. For sealed enclosures with no airflow, derate ambient by 10 C or clock down to 48 MHz. The exposed pad is optional and not present on LQFP-128, so use a continuous GND plane beneath the package for spreading.
Because the STR912FAW44X6 is marked obsolete, do not start new production designs on this part - STMicroelectronics officially recommends migrating to STM32. For legacy boards, place a last-time-buy order with sufficient safety stock (typical 5 year horizon) and validate against the same revision silicon mask to avoid mixing A0 and A1 steppings. Confirm boot-mode strap pin states with a 10 kohm pull-up or pull-down at reset to prevent bootloader lock-out.
Route the MII/RMII Ethernet traces as a 50 ohm single-ended impedance with matched lengths within 50 mils, and keep the 25 MHz Ethernet PHY clock trace shorter than 25 mm with continuous ground reference. Place the USB DP/DM traces as a 90 ohm differential pair and add a common-mode choke plus ESD protection within 10 mm of the connector. Avoid routing any high-speed trace under the LQFP-128 package to keep the inner planes continuous.
コンプライアンス情報
RoHS compliant per STMicroelectronics product page. Halogen-free status not stated on the official product page; marked unknown pending verification of the latest PCN. Not AEC-Q100 qualified (industrial grade).
