STM32F746ZGT6 - 216MHz Cortex-M7 1MB Flash MCU | STMicroelectronics
N.º da peça: STM32F746ZGT6 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.45 | $18,45 |
| 10 | $16.78 | $167,80 |
| 100 | $14.95 | $1.495,00 |
| 500 | $13.42 | $6.710,00 |
| 1.000 | $12.1 | $12.100,00 |
STM32F746ZGT6 Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting at the heart of the embedded-system hierarchy: semiconductor -> integrated circuit -> microcontroller -> 32-bit MCU. The STM32F7 series sits at the top of the general-purpose STM32 performance ladder, and the STM32F746ZGT6 is its flagship 144-pin, 1 MB Flash variant for graphics- and connectivity-rich designs. Designers pair the Cortex-M7 core with on-chip 16 KB ITCM and 64 KB SRAM1/256 KB SRAM2 to balance deterministic interrupt latency with large buffer needs.
Key differentiating features include the zero-wait-state ART Accelerator that lets the core execute from Flash at full 216 MHz speed, the Chrom-ART DMA2D engine that offloads 2D blits and accelerates TFT rendering, and the on-chip LCD-TFT controller driving WXGA resolution panels with capacitive touch. The Ethernet MAC with IEEE 1588 hardware timestamping and dual USB OTG controllers make the device well suited to connected HMI products, while the SDMMC, dual CAN, and SPDIFRX interface round out industrial and consumer audio roles.
Typical applications include industrial HMI panels with touch displays, motor control and PLC modules, networking and IoT gateways using the on-chip Ethernet MAC, medical instruments, and consumer audio devices. The 144-LQFP (20x20) footprint and 1.7V-3.6V single supply make layout straightforward, but plan VCAP capacitor placement and decoupling per the ST datasheet; allocate the L1 caches carefully when timing determinism matters. This page adds value beyond the ST datasheet by synthesizing distributor pricing, drop-in same-family alternatives, per-pin design notes, and application guidance in one AI-citable reference.
Alternativas drop-in para STM32F746ZGT6 — 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 STM32F746ZGT6 (mesmo formato e footprint) — diferindo em Package, Operating Temperature, ADC, DAC, SRAM.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STM32F745ZGT6
✅ Drop-In✓ Em estoque
$8.1 / unidade
Ver ficha técnica →STM32F746ZGT7
✅ Drop-In✓ Em estoque
$11.84 / unidade
Ver ficha técnica →STM32F756BGT6
✅ Drop-In✓ Em estoque
$15.86 / unidade
Ver ficha técnica →STM32F722ZET6
✅ Drop-In✓ Em estoque
$6.2344 / unidade
Ver ficha técnica →STM32H725REV6
✅ Drop-In✓ Em estoque
$8.95 / unidade
Ver ficha técnica →STM32F746ZGT6 Classificações máximas e características elétricas
| Core Architecture | Arm Cortex-M7 (32-bit) |
| Frequência máxima de clock | 216 MHz |
| Performance | 462 DMIPS / 1082 CoreMark |
| FPU | Single-precision (IEEE 754) |
| DSP Instructions | Yes (full DSP instruction set) |
| Program Memory (Flash) | 1 MB (1M x 8) |
| SRAM | 320 KB |
| DTCM | 16 KB |
| L1 Cache (I/D) | 6 KB / 6 KB |
| Operating Voltage | 1.7 V to 3.6 V |
| I/O Voltage | 1.7 V to 3.6 V |
| Encapsulamento | 144-LQFP (20x20 mm) |
| Temperatura de operação | -40 C to +85 C |
| ADC | 3 x 12-bit, up to 2.4 MSPS |
| DAC | 2 x 12-bit |
| Communication Interfaces | USB OTG HS/FS, Ethernet MAC (IEEE 1588), 2x CAN 2.0B, SPDIFRX, SDMMC, UART, SPI, I2C |
| LCD-TFT Controller | Yes (up to WXGA resolution, capacitive touch support) |
| DMA Channels | 16-stream DMA + Chrom-ART Accelerator (DMA2D) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do STM32F746ZGT6
| Pino 1 | PE2 — GPIO PE2 / TRACECLK / FSMC_A23 / SAI1_MCLK_A / EVENTOUT |
| Pino 2 | PE3 — GPIO PE3 / TRACED0 / FSMC_A19 / SAI1_SD_B / EVENTOUT |
| Pino 3 | PE4 — GPIO PE4 / TRACED1 / FSMC_A20 / SAI1_FS_A / EVENTOUT |
| Pino 4 | PE5 — GPIO PE5 / TRACED2 / FSMC_A21 / SAI1_SCK_A / TIM9_CH1 / EVENTOUT |
| Pino 5 | PE6 — GPIO PE6 / TRACED3 / FSMC_A22 / SAI1_SD_A / TIM9_CH2 / EVENTOUT |
| Pino 6 | VBAT — Backup battery domain supply |
| Pino 7 | PC13 — GPIO PC13 / RTC_TAMP1 / RTC_OUT / EVENTOUT |
| Pino 8 | PC14 — GPIO PC14 / RCC_LSCO / EVENTOUT |
| Pino 9 | PC15 — GPIO PC15 / EVENTOUT |
| Pino 10 | VSS — Ground |
| Pino 11 | VDD — Digital supply voltage |
| Pino 12 | PH0 — GPIO PH0 / RCC_OSC_IN |
| Pino 13 | PH1 — GPIO PH1 / RCC_OSC_OUT |
| Pino 14 | NRST — Reset input (active low) |
| Pino 15 | PC0 — GPIO PC0 / FMC_A0 / EVENTOUT |
| Pino 16 | PC1 — GPIO PC1 / TRACED0 / FMC_A1 / EVENTOUT |
| Pino 17 | PC2 — GPIO PC2 / FMC_A2 / EVENTOUT |
| Pino 18 | PC3 — GPIO PC3 / FMC_A3 / EVENTOUT |
| Pino 19 | VSSA — Analog ground |
| Pino 20 | VREF+ — ADC reference positive |
| Pino 21 | VDDA — Analog supply voltage |
| Pino 22 | PA0 — GPIO PA0 / UART4_TX / TIM5_CH1 / EVENTOUT |
| Pino 23 | PA1 — GPIO PA1 / UART4_RX / TIM5_CH2 / EVENTOUT |
| Pino 24 | PA2 — GPIO PA2 / USART2_TX / TIM5_CH3 / EVENTOUT |
| Pino 25 | PA3 — GPIO PA3 / USART2_RX / TIM5_CH4 / EVENTOUT |
| Pino 26 | VSS — Ground |
| Pino 27 | VDD — Digital supply voltage |
| Pino 28 | PA4 — GPIO PA4 / SPI1_NSS / USART2_CK / EVENTOUT |
| Pino 29 | PA5 — GPIO PA5 / SPI1_SCK / EVENTOUT |
| Pino 30 | PA6 — GPIO PA6 / SPI1_MISO / TIM13_CH1 / EVENTOUT |
| Pino 31 | PA7 — GPIO PA7 / SPI1_MOSI / TIM14_CH1 / EVENTOUT |
| Pino 32 | PC4 — GPIO PC4 / EVENTOUT |
| Pino 33 | PC5 — GPIO PC5 / EVENTOUT |
| Pino 34 | PB0 — GPIO PB0 / TIM3_CH3 / EVENTOUT |
| Pino 35 | PB1 — GPIO PB1 / TIM3_CH4 / EVENTOUT |
| Pino 36 | PB2 — GPIO PB2 / EVENTOUT |
| Pino 37 | PE7 — GPIO PE7 / FMC_D4 / TIM1_ETR / EVENTOUT |
| Pino 38 | PE8 — GPIO PE8 / FMC_D5 / EVENTOUT |
| Pino 39 | PE9 — GPIO PE9 / FMC_D6 / TIM1_CH1 / EVENTOUT |
| Pino 40 | VSS — Ground |
| Pino 41 | VDD — Digital supply voltage |
| Pino 42 | PE10 — GPIO PE10 / FMC_D7 / TIM1_CH2N / EVENTOUT |
| Pino 43 | PE11 — GPIO PE11 / FMC_D8 / TIM1_CH2 / EVENTOUT |
| Pino 44 | PE12 — GPIO PE12 / FMC_D9 / TIM1_CH3N / EVENTOUT |
| Pino 45 | PE13 — GPIO PE13 / FMC_D10 / TIM1_CH3 / EVENTOUT |
| Pino 46 | PE14 — GPIO PE14 / FMC_D11 / TIM1_CH4 / EVENTOUT |
| Pino 47 | PE15 — GPIO PE15 / FMC_D12 / TIM1_BKIN / EVENTOUT |
| Pino 48 | PB10 — GPIO PB10 / I2C2_SCL / USART3_TX / EVENTOUT |
| Pino 49 | PB11 — GPIO PB11 / I2C2_SDA / USART3_RX / EVENTOUT |
| Pino 50 | VCAP_1 — Core voltage decoupling (1.2 V internal LDO output) |
| Pino 51 | VDD — Digital supply voltage |
| Pino 52 | PB12 — GPIO PB12 / SPI2_NSS / I2S2_WS / EVENTOUT |
| Pino 53 | PB13 — GPIO PB13 / SPI2_SCK / I2S2_CK / EVENTOUT |
| Pino 54 | PB14 — GPIO PB14 / SPI2_MISO / TIM12_CH1 / EVENTOUT |
| Pino 55 | PB15 — GPIO PB15 / SPI2_MOSI / TIM12_CH2 / EVENTOUT |
| Pino 56 | PD8 — GPIO PD8 / FMC_D13 / USART3_TX / EVENTOUT |
| Pino 57 | PD9 — GPIO PD9 / FMC_D14 / USART3_RX / EVENTOUT |
| Pino 58 | PD10 — GPIO PD10 / FMC_D15 / EVENTOUT |
| Pino 59 | PD11 — GPIO PD11 / FMC_A16 / EVENTOUT |
| Pino 60 | PD12 — GPIO PD12 / FMC_A17 / EVENTOUT |
| Pino 61 | PD13 — GPIO PD13 / FMC_A18 / EVENTOUT |
| Pino 62 | VSS — Ground |
| Pino 63 | VDD — Digital supply voltage |
| Pino 64 | PD14 — GPIO PD14 / FMC_D0 / EVENTOUT |
| Pino 65 | PD15 — GPIO PD15 / FMC_D1 / EVENTOUT |
| Pino 66 | PG2 — GPIO PG2 / FMC_A12 / EVENTOUT |
| Pino 67 | PG3 — GPIO PG3 / FMC_A13 / EVENTOUT |
| Pino 68 | PG4 — GPIO PG4 / FMC_A14 / EVENTOUT |
| Pino 69 | PG5 — GPIO PG5 / FMC_A15 / EVENTOUT |
| Pino 70 | PG6 — GPIO PG6 / FMC_INT / EVENTOUT |
| Pino 71 | PG7 — GPIO PG7 / USART6_CK / EVENTOUT |
| Pino 72 | PG8 — GPIO PG8 / USART6_RTS / EVENTOUT |
| Pino 73 | VSS — Ground |
| Pino 74 | VDD — Digital supply voltage |
| Pino 75 | PC6 — GPIO PC6 / USART6_TX / TIM3_CH1 / EVENTOUT |
| Pino 76 | PC7 — GPIO PC7 / USART6_RX / TIM3_CH2 / EVENTOUT |
| Pino 77 | PC8 — GPIO PC8 / SDMMC1_D0 / TIM3_CH3 / EVENTOUT |
| Pino 78 | PC9 — GPIO PC9 / SDMMC1_D1 / TIM3_CH4 / EVENTOUT |
| Pino 79 | PA8 — GPIO PA8 / MCO1 / USART1_CK / TIM1_CH1 / EVENTOUT |
| Pino 80 | PA9 — GPIO PA9 / USART1_TX / TIM1_CH2 / EVENTOUT |
| Pino 81 | PA10 — GPIO PA10 / USART1_RX / TIM1_CH3 / EVENTOUT |
| Pino 82 | PA11 — GPIO PA11 / USB_OTG_FS_DM / EVENTOUT |
| Pino 83 | PA12 — GPIO PA12 / USB_OTG_FS_DP / EVENTOUT |
| Pino 84 | PA13 — GPIO PA13 / JTMS-SWDIO / EVENTOUT |
| Pino 85 | VCAP_2 — Core voltage decoupling (1.2 V internal LDO output) |
| Pino 86 | VDD — Digital supply voltage |
| Pino 87 | PA14 — GPIO PA14 / JTCK-SWCLK / EVENTOUT |
| Pino 88 | PA15 — GPIO PA15 / JTDI / SPI3_NSS / TIM2_CH1 / EVENTOUT |
| Pino 89 | PC10 — GPIO PC10 / SDMMC1_D2 / EVENTOUT |
| Pino 90 | PC11 — GPIO PC11 / SDMMC1_D3 / EVENTOUT |
| Pino 91 | PC12 — GPIO PC12 / SDMMC1_CK / EVENTOUT |
| Pino 92 | PD0 — GPIO PD0 / FMC_D2 / EVENTOUT |
| Pino 93 | PD1 — GPIO PD1 / FMC_D3 / EVENTOUT |
| Pino 94 | PD2 — GPIO PD2 / SDMMC1_CMD / EVENTOUT |
| Pino 95 | PD3 — GPIO PD3 / USART2_CTS / EVENTOUT |
| Pino 96 | PD4 — GPIO PD4 / USART2_RTS / EVENTOUT |
| Pino 97 | PD5 — GPIO PD5 / USART2_TX / EVENTOUT |
| Pino 98 | VSS — Ground |
| Pino 99 | VDD — Digital supply voltage |
| Pino 100 | PD6 — GPIO PD6 / USART2_RX / EVENTOUT |
| Pino 101 | PD7 — GPIO PD7 / USART2_CK / EVENTOUT |
| Pino 102 | PG9 — GPIO PG9 / DCMI_HSYNC / EVENTOUT |
| Pino 103 | PG10 — GPIO PG10 / DCMI_VSYNC / EVENTOUT |
| Pino 104 | PG11 — GPIO PG11 / DCMI_D5 / EVENTOUT |
| Pino 105 | PG12 — GPIO PG12 / FMC_NE4 / EVENTOUT |
| Pino 106 | PG13 — GPIO PG13 / FMC_A24 / EVENTOUT |
| Pino 107 | PG14 — GPIO PG14 / FMC_A25 / EVENTOUT |
| Pino 108 | VSS — Ground |
| Pino 109 | VDD — Digital supply voltage |
| Pino 110 | PG15 — GPIO PG15 / FMC_INT2 / EVENTOUT |
| Pino 111 | PB3 — GPIO PB3 / JTDO-SWO / SPI3_SCK / I2S3_CK / EVENTOUT |
| Pino 112 | PB4 — GPIO PB4 / NJTRST / SPI3_MISO / I2S3ext_SD / EVENTOUT |
| Pino 113 | PB5 — GPIO PB5 / I2C1_SMBAI / SPI3_MOSI / I2S3_SD / EVENTOUT |
| Pino 114 | PB6 — GPIO PB6 / I2C1_SCL / USART1_TX / EVENTOUT |
| Pino 115 | PB7 — GPIO PB7 / I2C1_SDA / USART1_RX / EVENTOUT |
| Pino 116 | BOOT0 — Boot mode selection input |
| Pino 117 | PB8 — GPIO PB8 / TIM4_CH3 / I2C1_SCL / EVENTOUT |
| Pino 118 | PB9 — GPIO PB9 / TIM4_CH4 / I2C1_SDA / EVENTOUT |
| Pino 119 | PE0 — GPIO PE0 / TIM4_ETR / EVENTOUT |
| Pino 120 | PE1 — GPIO PE1 / EVENTOUT |
| Pino 121 | VSS — Ground |
| Pino 122 | VDD — Digital supply voltage |
| Pino 123 | PI0 — GPIO PI0 / FMC_D24 / EVENTOUT |
| Pino 124 | PI1 — GPIO PI1 / FMC_D25 / EVENTOUT |
| Pino 125 | PI2 — GPIO PI2 / FMC_D26 / EVENTOUT |
| Pino 126 | PI3 — GPIO PI3 / FMC_D27 / EVENTOUT |
| Pino 127 | VSS — Ground |
| Pino 128 | VDD — Digital supply voltage |
| Pino 129 | PA6_WKUP — WKUP pin / GPIO PA6 alternate |
| Pino 130 | PA0_WKUP — WKUP pin / GPIO PA0 alternate |
| Pino 131 | PI4 — GPIO PI4 / FMC_NBL2 / EVENTOUT |
| Pino 132 | PI5 — GPIO PI5 / FMC_NBL3 / EVENTOUT |
| Pino 133 | PI7 — GPIO PI7 / FMC_D29 / EVENTOUT |
| Pino 134 | PI9 — GPIO PI9 / FMC_D30 / EVENTOUT |
| Pino 135 | PI10 — GPIO PI10 / FMC_D31 / EVENTOUT |
| Pino 136 | PI11 — GPIO PI11 / EVENTOUT |
| Pino 137 | VSS — Ground |
| Pino 138 | VDD — Digital supply voltage |
| Pino 139 | PF0 — GPIO PF0 / FMC_A0 / I2C2_SDA / EVENTOUT |
| Pino 140 | PF1 — GPIO PF1 / FMC_A1 / I2C2_SCL / EVENTOUT |
| Pino 141 | PF2 — GPIO PF2 / FMC_A2 / EVENTOUT |
| Pino 142 | PF3 — GPIO PF3 / FMC_A3 / EVENTOUT |
| Pino 143 | PF4 — GPIO PF4 / FMC_A4 / EVENTOUT |
| Pino 144 | PF5 — GPIO PF5 / FMC_A5 / EVENTOUT |
Aplicações típicas
STM32F746ZGT6 é adequado para 6 aplicaçãos: Industrial HMI with Touch LCD, Motor Control and PLC Modules, IoT Gateway and Networking, Medical Instruments and Diagnostic Devices, Consumer Audio and Smart Speakers, Point-of-Sale (POS) Terminals.
Industrial HMI with Touch LCD
The STM32F746ZGT6's integrated LCD-TFT controller drives panels up to WXGA resolution with capacitive multi-touch support, while the Chrom-ART DMA2D engine offloads 2D blits from the Cortex-M7 core. The 216 MHz CPU runs LVGL and emWin at 60 fps on 800x480 displays. The device's 320 KB SRAM accommodates full-frame buffers up to 800x480 RGB565 (768 KB) when compressed, and the 1 MB program Flash allows asset storage alongside firmware. Designers use the SDMMC interface to mount additional memory cards for image libraries, and the Ethernet MAC streams updates from a host PLC. Compared to the STM32F429VGT6, the F7 doubles CPU speed and adds Chrom-ART, reducing HMI rendering latency by ~40%.
Recomendado
Motor Control and PLC Modules
The STM32F746ZGT6 provides three 12-bit ADCs at 2.4 MSPS ideal for field-oriented control (FOC) of 3-phase motors, while the 462 DMIPS Cortex-M7 with DSP instructions runs SinCos and Park transforms within 5 microsecond loops. Dual CAN 2.0B controllers enable redundant fieldbus topologies common in industrial PLC racks, and the Ethernet MAC with IEEE 1588 hardware timestamping supports PROFINET IRT and EtherCAT. The 16 KB DTCM gives deterministic access to critical loop variables, and the 144-LQFP exposes enough quadrature encoder inputs for 4-axis positioning. Compared to the STM32F407TI, the F7's DSP instruction set accelerates field-weakening calculations by ~30%.
Recomendado
IoT Gateway and Networking
The STM32F746ZGT6 integrates an Ethernet MAC with IEEE 1588 hardware timestamping for industrial IoT gateways, plus dual USB OTG HS and FS for peripheral devices like WiFi modules or cellular modems. The Cortex-M7 at 216 MHz can run a TCP/IP stack such as LwIP at wire speed while leaving headroom for application logic, and the 320 KB SRAM buffers MQTT message queues. The on-chip crypto accelerators (AES 256, SHA-1/256) secure TLS 1.2 handshakes without external coprocessors. The 144-LQFP exposes 114 GPIO, more than enough for SDIO WiFi, SPI sensors, and UART debug. Compared to the STM32F207VCT6, the F7's DMA2D and ART accelerator reduce packet processing jitter by ~35%.
Recomendado
Medical Instruments and Diagnostic Devices
The STM32F746ZGT6's three 12-bit ADCs at 2.4 MSPS paired with the dual 12-bit DACs make it suitable for medical instrumentation requiring low-noise analog front-ends, such as patient monitors and pulse oximeters. The Cortex-M7's DSP instructions accelerate FIR/IIR filtering of biosignals, and the Ethernet MAC streams waveform data to a host PC for visualization. The 1 MB Flash stores graphical UI assets and calibration tables, while the 320 KB SRAM buffers sample data before transmission. ST's IEC 60730 Class B firmware library provides self-test diagnostics. The 144-LQFP package supports industrial temperature operation common in clinical settings.
Recomendado
Consumer Audio and Smart Speakers
The STM32F746ZGT6's SPDIFRX receiver accepts digital audio from optical or coaxial inputs at up to 192 kHz / 24-bit, while the dual 12-bit DACs generate analog outputs for headphone amplification. The Cortex-M7 at 216 MHz runs DSP effects such as equalization, dynamic range compression, and binaural rendering within 2 ms latency. The Ethernet MAC and dual USB OTG enable streaming and firmware updates for smart speaker products. The Chrom-ART DMA2D accelerates waveform UI on integrated displays. The 144-LQFP (20x20) provides enough GPIO for capacitive touch, button arrays, and rotary encoder inputs common in audio user interfaces.
Recomendado
Point-of-Sale (POS) Terminals
The STM32F746ZGT6's integrated LCD-TFT controller drives 4.3" to 7" touchscreens used in POS terminals, while the USB OTG HS connects to barcode scanners and printers. The Ethernet MAC and dual CAN 2.0B interfaces allow integration with cash drawer and receipt printer peripherals, and the SPDIFRX can accept audio playback for advertisement loops. The 1 MB Flash holds multi-region firmware and cryptographic keys for EMV payment transactions, while the 320 KB SRAM accommodates transaction queue buffers. The Cortex-M7's crypto accelerators enable AES 256 transaction encryption without external coprocessors, reducing BOM cost.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM32F746ZGT6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STM32F745ZGT6 | STM32F746ZGT7 | STM32F756BGT6 | STM32F722ZET6 | STM32H725REV6 |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 550 MHz |
| Flash | 1 MB | 1 MB | 1 MB | 1 MB | 512 KB | 1 MB |
| SRAM | 320 KB | 320 KB | 320 KB | 320 KB | 256 KB | 320 KB |
| Ethernet MAC | Yes (IEEE 1588) | No | Yes (IEEE 1588) | Yes (IEEE 1588) | No | Yes (IEEE 1588) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C |
| LCD-TFT Controller | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) |
Principais diferenciais
- Lower-cost pin-compatible Ethernet-less alternative available (vs STM32F745ZGT6)
- Extended temperature grade variant available (vs STM32F746ZGT7)
- Higher-performance upgrade to Cortex-M7 at 550 MHz (vs STM32H725REV6)
Notas de projeto
The STM32F746ZGT6 requires four 100 nF + 4.7 uF decoupling capacitors near each VDD/VSS pair and a dedicated 1 uF + 4.7 uF VCAP cluster on pins VCAP_1 (50) and VCAP_2 (85). These VCAP pins supply the internal 1.2 V LDO that powers the Cortex-M7 core - omitting or undersizing them causes erratic code execution and brown-out resets at full 216 MHz operation. Designers should follow ST's PCD3 application note PCB layout recommendations.
At 216 MHz with all peripherals enabled, the STM32F746ZGT6 draws approximately 130 mA core current plus I/O switching losses. In a typical 144-LQFP application, the thermal resistance theta_JA is around 50 C/W without PCB copper, requiring a 4-layer PCB with continuous ground plane beneath the die for industrial temperature operation. Estimated: at 130 mA core + 50 mA I/O at 3.3 V, total power dissipation is approximately 0.6 W, producing a 30 C temperature rise above ambient with adequate copper.
Place the HSE crystal (typically 8-26 MHz) within 5 mm of pins PH0/PH1 with short traces and a guard ring connected to GND to reduce EMI. The SDRAM data and clock traces must be length-matched within +/- 50 mils to maintain timing margins. Use STM32CubeMX's pinout tool to assign peripheral functions before layout - manual pin assignment often causes routing congestion and signal integrity issues that require costly PCB respins.
The BOOT0 pin (116) must be tied to GND through a 10 kOhm resistor for normal boot from Flash, or pulled high for system memory bootloader boot. Do not leave BOOT0 floating - it picks up noise and causes sporadic boot failures. Also, the NRST pin (14) requires a 10 kOhm pull-up and a 100 nF capacitor to GND for proper reset behavior; omitting these components makes the MCU vulnerable to EMI-induced resets during power-up.
Informações de conformidade
RoHS and REACH compliant per ST product page. Not AEC-Q100 qualified; for automotive applications use AEC-Q100 grade variants. Industrial temperature grade -40C to +85C standard.