STM32F437IIT6 - 180MHz 2MB Flash ARM Cortex-M4 MCU | STMicroelectronics
N.º de pieza: STM32F437IIT6 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.65 | $166,50 |
| 100 | $14.8 | $1.480,00 |
| 500 | $13.32 | $6.660,00 |
| 1.000 | $11.84 | $11.840,00 |
STM32F437IIT6 Descripción general
A microcontroller (MCU) is a self-contained computer on a single chip that combines a processor core, program memory (Flash), data memory (SRAM), and configurable peripherals such as timers, serial interfaces, and analog-to-digital converters. MCUs sit at the heart of embedded systems, forming the boundary between the physical world (sensors, actuators) and digital processing. The STM32F437IIT6 belongs to the STM32F4 high-performance family, which itself is part of the broader STM32 32-bit ARM Cortex-M portfolio, positioned above the mainstream STM32F1/F0 lines and below the graphics-capable STM32F7/H7 series.
Key features include 2 MB dual-bank Flash with read-while-write capability, 256 KB SRAM plus 4 KB backup SRAM, a Chrom-ART Accelerator for 2D graphics, a hardware JPEG codec, and a true random number generator (RNG). The device provides 140 general-purpose I/O pins, three 12-bit ADCs (24 channels, up to 2.4 MSPS), two 12-bit DACs, and a rich set of communication peripherals including Ethernet MAC, USB OTG HS/FS, CAN, and multiple USART/SPI/I2C interfaces.
The STM32F437IIT6 is built on ST's 90 nm embedded Flash process and operates from 1.7 V to 3.6 V, with a typical run-mode current of 38 mA at 180 MHz. Its ART Accelerator and adaptive real-time memory accelerator allow true zero-wait-state execution, while the FPU and DSP instruction set enable efficient motor control, audio processing, and sensor fusion algorithms without an external coprocessor.
Typical applications include industrial motor drives and PLCs, audio and voice processing equipment, medical instrumentation, and IoT gateways requiring Ethernet connectivity. The 176-pin LQFP package with 140 I/O makes it well suited to designs needing extensive peripheral fan-out.
When designing with this device, ensure the VCAP pins are decoupled with the specified 2.2 uF low-ESR capacitors and that the 1.2 V core regulator is not loaded externally. The dual-bank Flash supports in-application programming, which is valuable for field firmware updates.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, second-sourcing, and layout decisions.
Alternativas directas para STM32F437IIT6 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con STM32F437IIT6 (mismo factor de forma y huella) — difiere en Package, SRAM, Flash Memory, Mounting Type, ADC.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
STM32F439IIT6
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM32F427IIT6
✅ Sustitución directa✓ En stock
$11.2 / unidad
Ver hoja de datos →STM32F429IIT6
✅ Sustitución directa✓ En stock
$8.3523 / unidad
Ver hoja de datos →STM32F437IIH6
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$10.6 / unidad
Ver hoja de datos →STM32F437IIT7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
STM32F437IIT6 Valores máximos y características eléctricas
| Core | ARM Cortex-M4 32-bit RISC with FPU |
| Maximum CPU Frequency | 180 MHz |
| Flash Memory | 2 MB (2M x 8), dual-bank |
| SRAM | 256 KB + 4 KB backup SRAM |
| DMIPS | 225 DMIPS at 180 MHz |
| Supply Voltage Range | 1.7 V to 3.6 V |
| Temperatura de funcionamiento | -40 C to +85 C |
| Encapsulado | LQFP-176 (24x24 mm) |
| Number of I/O Pins | 140 |
| ADC | 3x 12-bit, 24 channels, up to 2.4 MSPS |
| DAC | 2x 12-bit |
| Communication Interfaces | Ethernet MAC, USB OTG HS/FS, CAN, USART, SPI, I2C |
| Timers | Advanced-control, general-purpose and basic timers |
| Graphics Accelerator | Chrom-ART Accelerator (DMA2D) |
| Security Features | True random number generator (RNG), hardware crypto |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de STM32F437IIT6
| Pin 1 | PE2 — GPIO port E bit 2 |
| Pin 2 | PE3 — GPIO port E bit 3 |
| Pin 3 | PE4 — GPIO port E bit 4 |
| Pin 4 | PE5 — GPIO port E bit 5 |
| Pin 5 | PE6 — GPIO port E bit 6 |
| Pin 6 | VBAT — Backup domain supply voltage |
| Pin 7 | PC13 — GPIO port C bit 13 |
| Pin 8 | PC14-OSC32_IN — GPIO / 32.768 kHz oscillator input |
| Pin 9 | PC15-OSC32_OUT — GPIO / 32.768 kHz oscillator output |
| Pin 10 | PF0 — GPIO port F bit 0 |
| Pin 11 | PF1 — GPIO port F bit 1 |
| Pin 12 | PF2 — GPIO port F bit 2 |
| Pin 13 | PF3 — GPIO port F bit 3 |
| Pin 14 | PF4 — GPIO port F bit 4 |
| Pin 15 | PF5 — GPIO port F bit 5 |
| Pin 16 | VSS — Ground |
| Pin 17 | VDD — Digital supply voltage |
| Pin 18 | PF6 — GPIO port F bit 6 |
| Pin 19 | PF7 — GPIO port F bit 7 |
| Pin 20 | PF8 — GPIO port F bit 8 |
| Pin 21 | PF9 — GPIO port F bit 9 |
| Pin 22 | PF10 — GPIO port F bit 10 |
| Pin 23 | PH0-OSC_IN — GPIO / HSE oscillator input |
| Pin 24 | PH1-OSC_OUT — GPIO / HSE oscillator output |
| Pin 25 | NRST — Reset input (active low) |
| Pin 26 | PC0 — GPIO port C bit 0 |
| Pin 27 | PC1 — GPIO port C bit 1 |
| Pin 28 | PC2 — GPIO port C bit 2 |
| Pin 29 | PC3 — GPIO port C bit 3 |
| Pin 30 | VDD — Digital supply voltage |
| Pin 31 | VSSA — Analog ground |
| Pin 32 | VREF+ — ADC/DAC reference voltage |
| Pin 33 | VDDA — Analog supply voltage |
| Pin 34 | PA0-WKUP — GPIO / wakeup pin |
| Pin 35 | PA1 — GPIO port A bit 1 |
| Pin 36 | PA2 — GPIO port A bit 2 |
| Pin 37 | PA3 — GPIO port A bit 3 |
| Pin 38 | VSS — Ground |
| Pin 39 | VDD — Digital supply voltage |
| Pin 40 | PA4 — GPIO port A bit 4 |
| Pin 41 | PA5 — GPIO port A bit 5 |
| Pin 42 | PA6 — GPIO port A bit 6 |
| Pin 43 | PA7 — GPIO port A bit 7 |
| Pin 44 | PC4 — GPIO port C bit 4 |
| Pin 45 | PC5 — GPIO port C bit 5 |
| Pin 46 | PB0 — GPIO port B bit 0 |
| Pin 47 | PB1 — GPIO port B bit 1 |
| Pin 48 | PB2 — GPIO port B bit 2 |
| Pin 49 | PF11 — GPIO port F bit 11 |
| Pin 50 | PF12 — GPIO port F bit 12 |
| Pin 51 | VSS — Ground |
| Pin 52 | VDD — Digital supply voltage |
| Pin 53 | PF13 — GPIO port F bit 13 |
| Pin 54 | PF14 — GPIO port F bit 14 |
| Pin 55 | PF15 — GPIO port F bit 15 |
| Pin 56 | PG0 — GPIO port G bit 0 |
| Pin 57 | PG1 — GPIO port G bit 1 |
| Pin 58 | PE7 — GPIO port E bit 7 |
| Pin 59 | PE8 — GPIO port E bit 8 |
| Pin 60 | PE9 — GPIO port E bit 9 |
| Pin 61 | VSS — Ground |
| Pin 62 | VDD — Digital supply voltage |
| Pin 63 | PE10 — GPIO port E bit 10 |
| Pin 64 | PE11 — GPIO port E bit 11 |
| Pin 65 | PE12 — GPIO port E bit 12 |
| Pin 66 | PE13 — GPIO port E bit 13 |
| Pin 67 | PE14 — GPIO port E bit 14 |
| Pin 68 | PE15 — GPIO port E bit 15 |
| Pin 69 | PB10 — GPIO port B bit 10 |
| Pin 70 | PB11 — GPIO port B bit 11 |
| Pin 71 | VCAP_1 — Core regulator decoupling capacitor |
| Pin 72 | VDD — Digital supply voltage |
| Pin 73 | PB12 — GPIO port B bit 12 |
| Pin 74 | PB13 — GPIO port B bit 13 |
| Pin 75 | PB14 — GPIO port B bit 14 |
| Pin 76 | PB15 — GPIO port B bit 15 |
| Pin 77 | PD8 — GPIO port D bit 8 |
| Pin 78 | PD9 — GPIO port D bit 9 |
| Pin 79 | PD10 — GPIO port D bit 10 |
| Pin 80 | PD11 — GPIO port D bit 11 |
| Pin 81 | PD12 — GPIO port D bit 12 |
| Pin 82 | PD13 — GPIO port D bit 13 |
| Pin 83 | PD14 — GPIO port D bit 14 |
| Pin 84 | PD15 — GPIO port D bit 15 |
| Pin 85 | PG2 — GPIO port G bit 2 |
| Pin 86 | PG3 — GPIO port G bit 3 |
| Pin 87 | PG4 — GPIO port G bit 4 |
| Pin 88 | PG5 — GPIO port G bit 5 |
| Pin 89 | PG6 — GPIO port G bit 6 |
| Pin 90 | PG7 — GPIO port G bit 7 |
| Pin 91 | PG8 — GPIO port G bit 8 |
| Pin 92 | VSS — Ground |
| Pin 93 | VDD — Digital supply voltage |
| Pin 94 | PC6 — GPIO port C bit 6 |
| Pin 95 | PC7 — GPIO port C bit 7 |
| Pin 96 | PC8 — GPIO port C bit 8 |
| Pin 97 | PC9 — GPIO port C bit 9 |
| Pin 98 | PA8 — GPIO port A bit 8 |
| Pin 99 | PA9 — GPIO port A bit 9 |
| Pin 100 | PA10 — GPIO port A bit 10 |
| Pin 101 | PA11 — GPIO port A bit 11 |
| Pin 102 | PA12 — GPIO port A bit 12 |
| Pin 103 | PA13 — GPIO port A bit 13 |
| Pin 104 | VCAP_2 — Core regulator decoupling capacitor |
| Pin 105 | VSS — Ground |
| Pin 106 | VDD — Digital supply voltage |
| Pin 107 | PA14 — GPIO port A bit 14 |
| Pin 108 | PA15 — GPIO port A bit 15 |
| Pin 109 | PC10 — GPIO port C bit 10 |
| Pin 110 | PC11 — GPIO port C bit 11 |
| Pin 111 | PC12 — GPIO port C bit 12 |
| Pin 112 | PD0 — GPIO port D bit 0 |
| Pin 113 | PD1 — GPIO port D bit 1 |
| Pin 114 | PD2 — GPIO port D bit 2 |
| Pin 115 | PD3 — GPIO port D bit 3 |
| Pin 116 | PD4 — GPIO port D bit 4 |
| Pin 117 | PD5 — GPIO port D bit 5 |
| Pin 118 | VSS — Ground |
| Pin 119 | VDD — Digital supply voltage |
| Pin 120 | PD6 — GPIO port D bit 6 |
| Pin 121 | PD7 — GPIO port D bit 7 |
| Pin 122 | PG9 — GPIO port G bit 9 |
| Pin 123 | PG10 — GPIO port G bit 10 |
| Pin 124 | PG11 — GPIO port G bit 11 |
| Pin 125 | PG12 — GPIO port G bit 12 |
| Pin 126 | PG13 — GPIO port G bit 13 |
| Pin 127 | PG14 — GPIO port G bit 14 |
| Pin 128 | VSS — Ground |
| Pin 129 | VDD — Digital supply voltage |
| Pin 130 | PG15 — GPIO port G bit 15 |
| Pin 131 | PB3 — GPIO port B bit 3 |
| Pin 132 | PB4 — GPIO port B bit 4 |
| Pin 133 | PB5 — GPIO port B bit 5 |
| Pin 134 | PB6 — GPIO port B bit 6 |
| Pin 135 | PB7 — GPIO port B bit 7 |
| Pin 136 | BOOT0 — Boot mode selection input |
| Pin 137 | PB8 — GPIO port B bit 8 |
| Pin 138 | PB9 — GPIO port B bit 9 |
| Pin 139 | PE0 — GPIO port E bit 0 |
| Pin 140 | PE1 — GPIO port E bit 1 |
| Pin 141 | VSS — Ground |
| Pin 142 | VDD — Digital supply voltage |
| Pin 143 | PF11 — GPIO port F bit 11 (alternate function) |
| Pin 144 | PF12 — GPIO port F bit 12 (alternate function) |
| Pin 145 | PF13 — GPIO port F bit 13 (alternate function) |
| Pin 146 | PF14 — GPIO port F bit 14 (alternate function) |
| Pin 147 | PF15 — GPIO port F bit 15 (alternate function) |
| Pin 148 | PG0 — GPIO port G bit 0 (alternate function) |
| Pin 149 | PG1 — GPIO port G bit 1 (alternate function) |
| Pin 150 | VSS — Ground |
| Pin 151 | VDD — Digital supply voltage |
| Pin 152 | PG2 — GPIO port G bit 2 (alternate function) |
| Pin 153 | PG3 — GPIO port G bit 3 (alternate function) |
| Pin 154 | PG4 — GPIO port G bit 4 (alternate function) |
| Pin 155 | PG5 — GPIO port G bit 5 (alternate function) |
| Pin 156 | PG6 — GPIO port G bit 6 (alternate function) |
| Pin 157 | PG7 — GPIO port G bit 7 (alternate function) |
| Pin 158 | PG8 — GPIO port G bit 8 (alternate function) |
| Pin 159 | VSS — Ground |
| Pin 160 | VDD — Digital supply voltage |
| Pin 161 | PC6 — GPIO port C bit 6 (alternate function) |
| Pin 162 | PC7 — GPIO port C bit 7 (alternate function) |
| Pin 163 | PC8 — GPIO port C bit 8 (alternate function) |
| Pin 164 | PC9 — GPIO port C bit 9 (alternate function) |
| Pin 165 | PA8 — GPIO port A bit 8 (alternate function) |
| Pin 166 | PA9 — GPIO port A bit 9 (alternate function) |
| Pin 167 | PA10 — GPIO port A bit 10 (alternate function) |
| Pin 168 | PA11 — GPIO port A bit 11 (alternate function) |
| Pin 169 | PA12 — GPIO port A bit 12 (alternate function) |
| Pin 170 | PA13 — GPIO port A bit 13 (alternate function) |
| Pin 171 | VSS — Ground |
| Pin 172 | VDD — Digital supply voltage |
| Pin 173 | PA14 — GPIO port A bit 14 (alternate function) |
| Pin 174 | PA15 — GPIO port A bit 15 (alternate function) |
| Pin 175 | PC10 — GPIO port C bit 10 (alternate function) |
| Pin 176 | PC11 — GPIO port C bit 11 (alternate function) |
Aplicaciones típicas
STM32F437IIT6 es adecuado para 6 aplicacións: Industrial Motor Control and Drives, Audio and Voice Processing Equipment, Medical Instrumentation and Patient Monitoring, IoT Gateways and Industrial Networking, Graphical User Interface and HMI Panels, Test and Measurement Instrumentation.
Industrial Motor Control and Drives
The STM32F437IIT6 fits industrial motor control because its 180 MHz Cortex-M4 with FPU and DSP instructions executes field-oriented control (FOC) loops in well under 10 us, while three 12-bit ADCs sampling at up to 2.4 MSPS capture three-phase current feedback simultaneously. Advanced-control timers generate complementary PWM with programmable dead-time for inverter bridges, and the CAN interface links drives to industrial networks. In a typical three-phase inverter, the MCU runs the Clarke/Park transforms and PI current regulators in hardware-accelerated floating point, leaving headroom for position estimation and safety monitoring. The trade-off versus a dedicated motor-control MCU is higher power consumption, but the 2 MB Flash accommodates complex control algorithms and communication stacks without external memory.
Recomendado
Audio and Voice Processing Equipment
The STM32F437IIT6 suits audio processing because its Cortex-M4 FPU and DSP instruction set handle FIR/IIR filtering, FFT, and sample-rate conversion in real time, while the two 12-bit DACs and I2S peripherals interface directly to audio codecs. The 2 MB Flash stores filter coefficients and audio buffers, and the 256 KB SRAM supports double-buffered DMA transfers that keep the CPU free for algorithm execution. In a voice-processing front end, the MCU performs beamforming and noise suppression across multiple microphone channels before streaming over USB or Ethernet. The trade-off is that the on-chip DACs are 12-bit, so high-fidelity designs pair the MCU with an external 24-bit codec such as the SGTL5000 for the analog conversion stage.
Recomendado
Medical Instrumentation and Patient Monitoring
The STM32F437IIT6 is used in medical instrumentation because its three 12-bit ADCs with 24 channels digitize ECG, SpO2, and pressure signals, while the FPU executes digital filtering and QRS detection algorithms at 180 MHz. The true random number generator and hardware crypto support secure patient-data transmission, and the dual-bank Flash enables fail-safe firmware updates in certified devices. In a bedside monitor, the MCU acquires multiple physiological channels through DMA, applies bandpass filtering, and drives a display or Ethernet backhaul. The trade-off versus a lower-power Cortex-M0+ is higher current draw, so battery-powered monitors should duty-cycle the core or select an ultra-low-power STM32L variant instead.
Recomendado
IoT Gateways and Industrial Networking
The STM32F437IIT6 serves IoT gateways because it integrates an IEEE 1588-capable Ethernet MAC, USB OTG HS/FS, and multiple CAN and USART interfaces, allowing a single chip to bridge fieldbus, USB, and IP networks. The 2 MB Flash hosts TCP/IP stacks, TLS, and application logic, while the 256 KB SRAM buffers packets across interfaces. In a gateway design, the MCU runs an RTOS with lwIP, terminates Modbus or CANopen on the field side, and forwards data over Ethernet to a cloud broker. The trade-off is that the integrated MAC requires an external PHY and magnetics, adding BOM cost compared with modules that integrate the full physical layer.
Recomendado
Graphical User Interface and HMI Panels
The STM32F437IIT6 supports graphical user interfaces through its Chrom-ART Accelerator (DMA2D), which offloads pixel-format conversion, blending, and rectangle filling from the CPU, and its hardware JPEG codec, which decodes images without software overhead. The 2 MB Flash stores GUI assets and fonts, and the 140 I/O pins drive external display controllers or memory-mapped LCD interfaces. In an HMI panel, the MCU composites layered graphics into a frame buffer while the CPU services touch input and control logic. The trade-off versus the STM32F429 is the absence of an on-chip TFT-LCD controller, so designs needing a direct RGB display interface should select the STM32F429IIT6 instead.
Recomendado
Test and Measurement Instrumentation
The STM32F437IIT6 is used in test and measurement equipment because its 12-bit ADCs at 2.4 MSPS and dual 12-bit DACs enable signal generation and acquisition, while the FPU performs FFT and RMS calculations in real time. The 180 MHz core and 2 MB Flash support waveform storage and measurement algorithms, and the USB OTG HS interface streams data to a host PC at high speed. In a portable instrument, the MCU acquires a signal, computes spectral content, and renders results to a display or USB link. The trade-off is that 12-bit ADC resolution limits dynamic range, so precision instruments should pair the MCU with an external 16- or 24-bit ADC.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para STM32F437IIT6 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | STM32F439IIT6 | STM32F427IIT6 | STM32F429IIT6 |
|---|---|---|---|---|
| Package | LQFP-176 (24x24) | LQFP-176 (24x24) - same | LQFP-176 (24x24) - same | LQFP-176 (24x24) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core / Frequency | ARM Cortex-M4, 180 MHz | ARM Cortex-M4, 180 MHz | ARM Cortex-M4, 180 MHz | ARM Cortex-M4, 180 MHz |
| Flash Memory | 2 MB dual-bank | 2 MB dual-bank | 2 MB dual-bank | 2 MB dual-bank |
| SRAM | 256 KB + 4 KB backup | 256 KB + 4 KB backup | 256 KB + 4 KB backup | 256 KB + 4 KB backup |
| Graphics Accelerator | Chrom-ART (DMA2D) + JPEG codec | Chrom-ART (DMA2D) + JPEG codec | None | Chrom-ART (DMA2D), no JPEG codec |
| LCD-TFT Controller | No | Yes | No | Yes |
| Crypto / RNG | RNG only | Crypto/hash processor + RNG | None | RNG only |
| Supply Voltage | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| GPIO Count | 140 | 140 | 140 | 140 |
Diferenciadores clave
- Integrated Chrom-ART graphics accelerator and JPEG codec (frente a STM32F427IIT6)
- True random number generator for security functions (frente a STM32F427IIT6)
- Lower cost than the crypto-equipped STM32F439IIT6 (frente a STM32F439IIT6)
Notas de diseño
The STM32F437IIT6 requires 2.2 uF low-ESR ceramic capacitors on each VCAP pin (VCAP_1 and VCAP_2) to stabilize the internal 1.2 V core regulator. Place these capacitors within 5 mm of the pins and connect them to the nearest ground plane with short, wide traces. Do not connect any external load to the VCAP pins. Estimated: at 180 MHz run mode the core draws approximately 38 mA typical, so the regulator's decoupling must handle fast transient current steps during wake-from-sleep events.
Use a solid ground plane under the LQFP-176 package and provide at least one 100 nF decoupling capacitor per VDD pin pair, plus a bulk 10 uF capacitor near the package corner. Route the high-speed USB OTG HS differential pair as 90 ohm impedance-controlled traces and keep them away from the ADC reference pins. The 24x24 mm body requires careful thermal relief on the ground pads to avoid tombstoning during reflow.
Do not leave the BOOT0 pin floating; tie it to ground through a 10 kOhm resistor for normal Flash boot. The NRST pin has an internal pull-up but adding an external 100 nF capacitor improves noise immunity. When using the ADC, keep VREF+ decoupled with a 1 uF plus 10 nF capacitor and avoid routing digital signals beneath the analog supply pins. Estimated: ADC accuracy degrades by roughly 1 LSB for every 10 mV of noise on VREF+.
Información de cumplimiento
RoHS and REACH compliance per STMicroelectronics product page. Not AEC-Q100 qualified; automotive designs should select an STM32F4 automotive-grade variant.
