STR912FAW44X6 - ARM966E-S MCU 96MHz 512KB Flash LQFP-128
N.º da peça: STR912FAW44X6 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para STR912FAW44X6 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com STR912FAW44X6 (mesmo formato e footprint) — diferindo em ADC, CAN, Ethernet, Operating Temperature, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STR911FAW44X6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STR912FAW44X6T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STR910FM32X6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STR912FAW44X6 Classificações máximas e características elétricas
| Core | ARM966E-S (ARM9-class, 32-bit RISC) |
| Frequência máxima de clock | 96 MHz |
| Program Memory | 512 KB Flash (dual-bank) |
| SRAM | 96 KB |
| Tensão de alimentação | 1.8 V core / 3.3 V I/O |
| Encapsulamento | LQFP-128 (14 x 14 mm) |
| Tipo de montagem | 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) |
| Temperatura de operação | -40C to +85C (industrial) |
| Status RoHS | Compliant |
Guia de Configuração de Pinos do STR912FAW44X6 lqfp-128 (14 x 14 mm)
Configuração de pinos para STR912FAW44X6 (pacote lqfp-128 (14 x 14 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para STR912FAW44X6.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
STR912FAW44X6 é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STR912FAW44X6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- 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)
Notas de projeto
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.
Informações de conformidade
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).
