STM32F746ZGT7 - 216MHz Cortex-M7 1MB Flash MCU | STMicroelectronics
N.º da peça: STM32F746ZGT7 ✓ Ativo| Qtd. | Preço unitário | 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 |
STM32F746ZGT7 Visão geral
A microcontroller unit (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 converters. MCUs sit at the heart of embedded systems, bridging the gap between sensors, actuators, and communication networks. The STM32F746ZGT7 belongs to the STM32F7 series, which itself is part of the broader STM32 ARM Cortex-M portfolio and the wider class of 32-bit embedded microcontrollers.
Key features include the 216 MHz Cortex-M7 core with 1082 CoreMark score, 1 MB Flash, 320 KB SRAM (including 64 KB DTCM and 16 KB ITCM), an LCD-TFT controller with Chrom-ART acceleration, Ethernet MAC with IEEE 1588, USB OTG HS/FS, dual CAN, and up to 168 GPIOs. The integrated FPU and DSP extensions allow efficient implementation of motor control, audio processing, and digital filtering algorithms without an external coprocessor.
The device is fabricated on ST's 90 nm embedded Flash process and operates from 1.7 V to 3.6 V, with a flexible power architecture supporting multiple low-power modes down to 1.7 V. The ART Accelerator and L1 cache deliver near-zero-wait-state execution from Flash at 216 MHz, achieving 1082 CoreMark and 462 DMIPS.
Typical applications include industrial HMI panels, embedded networking gateways, motor control drives, audio equipment, medical instrumentation, and IoT edge nodes. The combination of Ethernet, CAN, and USB makes it well suited to gateway and protocol-conversion designs.
When designing with this MCU, pay close attention to the VCAP decoupling capacitors, the 25 MHz HSE crystal layout, and the power sequencing of VDD, VDDA, and VBAT rails. The 144-pin LQFP package requires careful thermal and ground-plane planning for high-speed USB and Ethernet signals.
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 drop-in para STM32F746ZGT7 — 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 STM32F746ZGT7 (mesmo formato e footprint) — diferindo em LCD-TFT Controller, Operating Temperature, DAC, Operating Voltage, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STM32F746ZGT6
✅ Drop-In✓ Em estoque
$12.1 / unidade
Ver ficha técnica →STM32F745ZGT7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32F746ZET7
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM32F746ZGT7TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32F745ZET7
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM32F746ZGT7 Classificações máximas e características elétricas
| Core | ARM Cortex-M7 32-bit RISC with FPU |
| Maximum CPU Frequency | 216 MHz |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 320 KB total (including 64 KB DTCM, 16 KB ITCM) |
| CoreMark Score | 1082 CoreMark at 216 MHz |
| DMIPS | 462 DMIPS |
| Operating Voltage | 1.7 V to 3.6 V |
| Encapsulamento | 144-LQFP (20x20 mm) |
| Contagem de pinos | 144 |
| GPIO Count | Up to 168 I/O ports with interrupt capability |
| Ethernet | 10/100 Ethernet MAC with IEEE 1588 |
| USB | USB OTG HS and FS |
| CAN | 2x CAN interfaces |
| LCD-TFT Controller | Yes, with Chrom-ART Accelerator |
| ADC | 3x 12-bit ADC |
| DAC | 2x 12-bit DAC |
| Temperatura de operação | -40C to +105C |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do STM32F746ZGT7
| Pino 1 | PE2 — GPIO / TRACECLK / SAI1_MCLK_A / ETH_MII_TXD3 |
| Pino 2 | PE3 — GPIO / TRACED0 / SAI1_SD_B |
| Pino 3 | PE4 — GPIO / TRACED1 / SAI1_FS_A / DCMI_D4 |
| Pino 4 | PE5 — GPIO / TRACED2 / SAI1_SCK_A / DCMI_D6 |
| Pino 5 | PE6 — GPIO / TRACED3 / SAI1_SD_A / DCMI_D7 |
| Pino 6 | VBAT — Backup battery supply |
| Pino 7 | PC13 — GPIO / RTC_TAMP1 / RTC_TS / WKUP2 |
| Pino 8 | PC14-OSC32_IN — LSE oscillator input / GPIO |
| Pino 9 | PC15-OSC32_OUT — LSE oscillator output / GPIO |
| Pino 10 | VSS — Ground |
| Pino 11 | VDD — Digital power supply |
| Pino 12 | PH0-OSC_IN — HSE oscillator input / GPIO |
| Pino 13 | PH1-OSC_OUT — HSE oscillator output / GPIO |
| Pino 14 | NRST — Reset input (active low) |
| Pino 15 | PC0 — GPIO / ADC123_IN10 / SAI1_MCLK_B |
| Pino 16 | PC1 — GPIO / ADC123_IN11 / ETH_MDC |
| Pino 17 | PC2 — GPIO / ADC123_IN12 / ETH_MII_TXD2 |
| Pino 18 | PC3 — GPIO / ADC123_IN13 / ETH_MII_TX_CLK |
| Pino 19 | VDD — Digital power supply |
| Pino 20 | VSSA — Analog ground |
| Pino 21 | VREF+ — ADC/DAC reference voltage |
| Pino 22 | VDDA — Analog power supply |
| Pino 23 | PA0-WKUP — GPIO / ADC123_IN0 / TIM2_CH1 / WKUP1 |
| Pino 24 | PA1 — GPIO / ADC123_IN1 / TIM2_CH2 / ETH_RMII_REF_CLK |
| Pino 25 | PA2 — GPIO / ADC123_IN2 / TIM2_CH3 / ETH_MDIO |
| Pino 26 | PA3 — GPIO / ADC123_IN3 / TIM2_CH4 / ETH_MII_COL |
| Pino 27 | VSS — Ground |
| Pino 28 | VDD — Digital power supply |
| Pino 29 | PA4 — GPIO / ADC12_IN4 / DAC_OUT1 / SPI1_NSS |
| Pino 30 | PA5 — GPIO / ADC12_IN5 / DAC_OUT2 / SPI1_SCK |
| Pino 31 | PA6 — GPIO / ADC12_IN6 / TIM3_CH1 / SPI1_MISO |
| Pino 32 | PA7 — GPIO / ADC12_IN7 / TIM3_CH2 / SPI1_MOSI / ETH_RMII_CRS_DV |
| Pino 33 | PC4 — GPIO / ADC123_IN14 / ETH_RMII_RXD0 |
| Pino 34 | PC5 — GPIO / ADC123_IN15 / ETH_RMII_RXD1 |
| Pino 35 | PB0 — GPIO / ADC12_IN8 / TIM3_CH3 / ETH_MII_RXD2 |
| Pino 36 | PB1 — GPIO / ADC12_IN9 / TIM3_CH4 / ETH_MII_RXD3 |
| Pino 37 | PB2 — GPIO / RTC_ALARM_OUT / ETH_MII_TX_ER |
| Pino 38 | PE7 — GPIO / TIM1_ETR / FMC_D4 / DCMI_D2 |
| Pino 39 | PE8 — GPIO / TIM1_CH1N / FMC_D5 / DCMI_D3 |
| Pino 40 | PE9 — GPIO / TIM1_CH1 / FMC_D6 / DCMI_D0 |
| Pino 41 | PE10 — GPIO / TIM1_CH2N / FMC_D7 / DCMI_D1 |
| Pino 42 | PE11 — GPIO / TIM1_CH2 / FMC_D8 / SPI4_NSS |
| Pino 43 | PE12 — GPIO / TIM1_CH3N / FMC_D9 / SPI4_SCK |
| Pino 44 | PE13 — GPIO / TIM1_CH3 / FMC_D10 / SPI4_MISO |
| Pino 45 | PE14 — GPIO / TIM1_CH4 / FMC_D11 / SPI4_MOSI |
| Pino 46 | PE15 — GPIO / TIM1_BKIN / FMC_D12 |
| Pino 47 | PB10 — GPIO / TIM2_CH3 / I2C2_SCL / ETH_MII_RX_ER |
| Pino 48 | PB11 — GPIO / TIM2_CH4 / I2C2_SDA / ETH_RMII_TX_EN |
| Pino 49 | VCAP_1 — Core voltage regulator capacitor |
| Pino 50 | VDD — Digital power supply |
| Pino 51 | PB12 — GPIO / TIM1_BKIN / I2C2_SMBA / SPI2_NSS / CAN2_RX |
| Pino 52 | PB13 — GPIO / TIM1_CH1N / SPI2_SCK / CAN2_TX |
| Pino 53 | PB14 — GPIO / TIM1_CH2N / SPI2_MISO / USART3_TX |
| Pino 54 | PB15 — GPIO / TIM1_CH3N / SPI2_MOSI / USART3_RX |
| Pino 55 | PD8 — GPIO / USART3_TX / FMC_D13 |
| Pino 56 | PD9 — GPIO / USART3_RX / FMC_D14 |
| Pino 57 | PD10 — GPIO / USART3_CK / FMC_D15 |
| Pino 58 | PD11 — GPIO / USART3_CTS / FMC_A16 / FMC_CLE |
| Pino 59 | PD12 — GPIO / TIM4_CH1 / FMC_A17 / FMC_ALE |
| Pino 60 | PD13 — GPIO / TIM4_CH2 / FMC_A18 |
| Pino 61 | PD14 — GPIO / TIM4_CH3 / FMC_D0 |
| Pino 62 | PD15 — GPIO / TIM4_CH4 / FMC_D1 |
| Pino 63 | PC6 — GPIO / TIM3_CH1 / USART6_TX / DCMI_D0 / SDMMC1_D0 |
| Pino 64 | PC7 — GPIO / TIM3_CH2 / USART6_RX / DCMI_D1 / SDMMC1_D1 |
| Pino 65 | PC8 — GPIO / TIM3_CH3 / USART6_CK / DCMI_D2 / SDMMC1_D2 |
| Pino 66 | PC9 — GPIO / TIM3_CH4 / I2C3_SDA / DCMI_D3 / SDMMC1_D3 |
| Pino 67 | PA8 — GPIO / TIM1_CH1 / I2C3_SCL / USART1_CK / MCO1 |
| Pino 68 | PA9 — GPIO / TIM1_CH2 / USART1_TX / USB_OTG_FS_ID |
| Pino 69 | PA10 — GPIO / TIM1_CH3 / USART1_RX / USB_OTG_FS_DM |
| Pino 70 | PA11 — GPIO / TIM1_CH4 / USART1_CTS / USB_OTG_FS_DP / CAN1_RX |
| Pino 71 | PA12 — GPIO / TIM1_ETR / USART1_RTS / USB_OTG_FS_DP / CAN1_TX |
| Pino 72 | PA13 — GPIO / JTMS-SWDIO |
| Pino 73 | VCAP_2 — Core voltage regulator capacitor |
| Pino 74 | VSS — Ground |
| Pino 75 | VDD — Digital power supply |
| Pino 76 | PA14 — GPIO / JTCK-SWCLK |
| Pino 77 | PA15 — GPIO / JTDI / TIM2_CH1 / SPI1_NSS |
| Pino 78 | PC10 — GPIO / USART3_TX / SPI3_SCK / SDMMC1_D2 / DCMI_D8 |
| Pino 79 | PC11 — GPIO / USART3_RX / SPI3_MISO / SDMMC1_D3 / DCMI_D4 |
| Pino 80 | PC12 — GPIO / USART3_CK / SPI3_MOSI / SDMMC1_CK / DCMI_D9 |
| Pino 81 | PD0 — GPIO / CAN1_RX / FMC_D2 |
| Pino 82 | PD1 — GPIO / CAN1_TX / FMC_D3 |
| Pino 83 | PD2 — GPIO / TIM3_ETR / SDMMC1_CMD / DCMI_D11 |
| Pino 84 | PD3 — GPIO / USART2_CTS / FMC_CLK / DCMI_D5 |
| Pino 85 | PD4 — GPIO / USART2_RTS / FMC_NOE |
| Pino 86 | PD5 — GPIO / USART2_TX / FMC_NWE |
| Pino 87 | PD6 — GPIO / USART2_RX / FMC_NWAIT / DCMI_D10 |
| Pino 88 | PD7 — GPIO / USART2_CK / FMC_NE1 |
| Pino 89 | PG9 — GPIO / USART6_RX / FMC_NE2 / DCMI_VSYNC |
| Pino 90 | PG10 — GPIO / FMC_NE3 / DCMI_D2 / LCD_G3 |
| Pino 91 | PG11 — GPIO / ETH_MII_TX_EN / DCMI_D3 / LCD_B3 |
| Pino 92 | PG12 — GPIO / USART6_RTS / FMC_NE4 / LCD_B4 |
| Pino 93 | PG13 — GPIO / USART6_CTS / ETH_MII_TXD0 / FMC_A24 |
| Pino 94 | PG14 — GPIO / USART6_TX / ETH_MII_TXD1 / FMC_A25 |
| Pino 95 | VSS — Ground |
| Pino 96 | VDD — Digital power supply |
| Pino 97 | PG15 — GPIO / USART6_CTS / DCMI_D13 |
| Pino 98 | PB3 — GPIO / JTDO / TIM2_CH2 / SPI1_SCK / ETH_MII_TX_CLK |
| Pino 99 | PB4 — GPIO / NJTRST / TIM3_CH1 / SPI1_MISO |
| Pino 100 | PB5 — GPIO / TIM3_CH2 / SPI1_MOSI / CAN2_RX / ETH_PPS_OUT |
| Pino 101 | PB6 — GPIO / TIM4_CH1 / I2C1_SCL / USART1_TX / CAN2_TX |
| Pino 102 | PB7 — GPIO / TIM4_CH2 / I2C1_SDA / USART1_RX / FMC_NL |
| Pino 103 | BOOT0 — Boot mode selection |
| Pino 104 | PB8 — GPIO / TIM4_CH3 / I2C1_SCL / CAN1_RX / SDMMC1_D4 |
| Pino 105 | PB9 — GPIO / TIM4_CH4 / I2C1_SDA / CAN1_TX / SDMMC1_D5 |
| Pino 106 | PE0 — GPIO / TIM4_ETR / FMC_NBL0 / DCMI_D2 |
| Pino 107 | PE1 — GPIO / FMC_NBL1 / DCMI_D3 |
| Pino 108 | VSS — Ground |
| Pino 109 | VDD — Digital power supply |
| Pino 110 | PF0 — GPIO / I2C2_SDA / FMC_A0 |
| Pino 111 | PF1 — GPIO / I2C2_SCL / FMC_A1 |
| Pino 112 | PF2 — GPIO / I2C2_SMBA / FMC_A2 |
| Pino 113 | PF3 — GPIO / ADC3_IN9 / FMC_A3 |
| Pino 114 | PF4 — GPIO / ADC3_IN14 / FMC_A4 |
| Pino 115 | PF5 — GPIO / ADC3_IN15 / FMC_A5 |
| Pino 116 | VSS — Ground |
| Pino 117 | VDD — Digital power supply |
| Pino 118 | PF6 — GPIO / ADC3_IN4 / TIM10_CH1 / FMC_A6 |
| Pino 119 | PF7 — GPIO / ADC3_IN5 / TIM11_CH1 / FMC_A7 |
| Pino 120 | PF8 — GPIO / ADC3_IN6 / TIM13_CH1 / FMC_A8 |
| Pino 121 | PF9 — GPIO / ADC3_IN7 / TIM14_CH1 / FMC_A9 |
| Pino 122 | PF10 — GPIO / ADC3_IN8 / FMC_A10 |
| Pino 123 | PH2 — GPIO / ETH_MII_CRS / FMC_SDCKE0 / LCD_R0 |
| Pino 124 | PH3 — GPIO / ETH_MII_COL / FMC_SDNE0 / LCD_R1 |
| Pino 125 | PH4 — GPIO / I2C2_SCL / USB_OTG_HS_ULPI_NXT / LCD_G4 |
| Pino 126 | PH5 — GPIO / I2C2_SDA / SPI5_NSS / LCD_G5 |
| Pino 127 | PF11 — GPIO / SPI5_MOSI / DCMI_D12 / LCD_G6 |
| Pino 128 | PF12 — GPIO / FMC_A11 / LCD_G7 |
| Pino 129 | VSS — Ground |
| Pino 130 | VDD — Digital power supply |
| Pino 131 | PF13 — GPIO / FMC_A12 / LCD_G7 |
| Pino 132 | PF14 — GPIO / FMC_A13 / LCD_G7 |
| Pino 133 | PF15 — GPIO / FMC_A14 / LCD_G7 |
| Pino 134 | PG0 — GPIO / FMC_A15 / LCD_G7 |
| Pino 135 | PG1 — GPIO / FMC_A16 / LCD_G7 |
| Pino 136 | PE2 — GPIO / TRACECLK / SAI1_MCLK_A / ETH_MII_TXD3 |
| Pino 137 | PE3 — GPIO / TRACED0 / SAI1_SD_B |
| Pino 138 | PE4 — GPIO / TRACED1 / SAI1_FS_A / DCMI_D4 |
| Pino 139 | PE5 — GPIO / TRACED2 / SAI1_SCK_A / DCMI_D6 |
| Pino 140 | PE6 — GPIO / TRACED3 / SAI1_SD_A / DCMI_D7 |
| Pino 141 | VSS — Ground |
| Pino 142 | VDD — Digital power supply |
| Pino 143 | PDR_ON — Power-down reset enable |
| Pino 144 | VDD — Digital power supply |
Aplicações típicas
STM32F746ZGT7 é adequado para 6 aplicaçãos: Industrial HMI Panels, Embedded Networking Gateways, Motor Control Drives, Audio Processing Equipment, Medical Instrumentation, IoT Edge Nodes.
Industrial HMI Panels
The STM32F746ZGT7 fits industrial human-machine interface panels because its 216 MHz Cortex-M7 core, 1 MB Flash, and integrated LCD-TFT controller with Chrom-ART Accelerator drive TFT displays up to SVGA resolution without an external graphics chip. The Chrom-ART block offloads pixel blending and alpha compositing, cutting CPU load by up to 80% compared with software rendering, which leaves headroom for the application logic and touch handling. The 144-pin LQFP package provides up to 168 GPIOs for keypads, encoders, and status LEDs, while the 10/100 Ethernet MAC with IEEE 1588 supports factory-floor networking and time synchronization. Designers should budget the 320 KB SRAM carefully: a double-buffered 800x480 RGB565 frame buffer consumes about 768 KB, so external SDRAM via the FMC is typically required for full-screen graphics.
Recomendado
Embedded Networking Gateways
The STM32F746ZGT7 is well suited to embedded networking gateways because it integrates a 10/100 Ethernet MAC with IEEE 1588 precision time protocol, dual CAN controllers, and USB OTG HS/FS on a single 144-pin device. The 216 MHz Cortex-M7 core with FPU and DSP instructions handles protocol stacks such as lwIP, Modbus TCP, and CANopen while still leaving cycles for application processing. The 1 MB Flash accommodates a full TCP/IP stack plus a bootloader and application image, and the 320 KB SRAM supports multiple socket buffers and DMA descriptors. A key trade-off is that the Ethernet MAC requires an external PHY and a 25 MHz reference clock; designers must route the RMII signals with controlled impedance and keep the PHY within a few centimeters of the MCU to preserve signal integrity.
Recomendado
Motor Control Drives
The STM32F746ZGT7 suits motor control drives because its Cortex-M7 core with single-precision FPU and DSP extensions executes field-oriented control loops in a fraction of the time required by Cortex-M4 devices, enabling higher PWM frequencies and lower current ripple. Three 12-bit ADCs with up to 2.4 MSPS sample phase currents and bus voltage simultaneously, while advanced timers generate complementary PWM with dead-time insertion for three-phase inverters. Dual CAN interfaces support industrial drive networks, and the 144-pin package provides enough pins for encoder inputs, fault signals, and communication. A practical consideration is that the ADC sampling must be synchronized to the PWM carrier to avoid switching noise; ST's motor control SDK provides reference firmware that demonstrates this synchronization on the STM32F7 series.
Recomendado
Audio Processing Equipment
The STM32F746ZGT7 is a strong fit for audio processing equipment because the 216 MHz Cortex-M7 with FPU and DSP instructions runs biquad filter banks, FFT analysis, and sample-rate conversion in real time, while the integrated SAI and I2S peripherals interface directly to audio codecs and DACs. The 1 MB Flash stores firmware and coefficient tables, and the 320 KB SRAM buffers multi-channel audio streams without external memory. The device also supports USB Audio Class 2.0 through its OTG HS controller, enabling high-resolution playback and recording. Designers should note that the SAI peripheral requires a low-jitter master clock; using the internal PLL with a 25 MHz crystal typically achieves the required audio-grade jitter performance, but an external audio clock generator may be needed for professional applications.
Recomendado
Medical Instrumentation
The STM32F746ZGT7 supports medical instrumentation designs that require fast signal processing and reliable connectivity. Its 216 MHz Cortex-M7 core with FPU executes digital filters and peak-detection algorithms for patient monitors and diagnostic devices, while the three 12-bit ADCs digitize sensor channels and the dual DACs generate calibration or stimulation waveforms. The 1 MB Flash and 320 KB SRAM accommodate signal-processing libraries and data logging buffers, and the USB OTG interface supports connection to a host PC for data transfer. A critical design consideration is that medical devices must meet IEC 60601 isolation and EMC requirements; the MCU itself is not isolated, so external digital isolators and careful ground partitioning are required on the analog front end.
Recomendado
IoT Edge Nodes
The STM32F746ZGT7 serves IoT edge nodes that need local processing power plus multiple connectivity options. The 216 MHz Cortex-M7 core with FPU runs lightweight neural-network inference and sensor-fusion algorithms at the edge, reducing cloud bandwidth and latency, while the Ethernet MAC, USB OTG, and dual CAN interfaces provide wired connectivity and the UART/SPI/I2C peripherals connect to wireless modules such as Wi-Fi, Bluetooth, and LoRa. The 1 MB Flash stores firmware and machine-learning models, and the 320 KB SRAM buffers sensor data. A practical trade-off is power: the Cortex-M7 at 216 MHz draws substantially more current than a Cortex-M4, so battery-powered nodes should use the low-power modes aggressively and consider the STM32F745 or STM32L4 series for always-on sensing.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM32F746ZGT7 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STM32F746ZGT6 | STM32F745ZGT7 | STM32F746ZET7 | STM32F746ZGT7TR |
|---|---|---|---|---|---|
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU |
| Maximum CPU Frequency | 216 MHz | 216 MHz | 216 MHz | 216 MHz | 216 MHz |
| Flash Memory | 1 MB | 1 MB | 1 MB | 512 KB | 1 MB |
| SRAM | 320 KB | 320 KB | 320 KB | 320 KB | 320 KB |
| LCD-TFT Controller | Yes (with Chrom-ART) | Yes (with Chrom-ART) | No | Yes (with Chrom-ART) | Yes (with Chrom-ART) |
| Operating Temperature | -40C to +105C | -40C to +85C | -40C to +105C | -40C to +105C | -40C to +105C |
| Ethernet MAC | 10/100 with IEEE 1588 | 10/100 with IEEE 1588 | 10/100 with IEEE 1588 | 10/100 with IEEE 1588 | 10/100 with IEEE 1588 |
| USB | USB OTG HS and FS | USB OTG HS and FS | USB OTG HS and FS | USB OTG HS and FS | USB OTG HS and FS |
Principais diferenciais
- Higher temperature grade than STM32F746ZGT6 (vs STM32F746ZGT6)
- Integrated LCD-TFT controller and Chrom-ART Accelerator (vs STM32F745ZGT7)
- Double the Flash of the STM32F746ZET7 (vs STM32F746ZET7)
- Full graphics and networking feature set in one package (vs STM32F429ZGT6)
Notas de projeto
The STM32F746ZGT7 requires two VCAP pins (VCAP_1 on pin 49 and VCAP_2 on pin 73) to be decoupled with 2.2 uF low-ESR ceramic capacitors to VSS. These capacitors stabilize the internal 1.2 V core regulator and must be placed within 10 mm of the pins with short, wide traces. Omitting or undersizing them causes erratic operation and possible core lockup at 216 MHz. Estimated: at 216 MHz with all peripherals active, core current is approximately 250 mA, so the regulator's transient response depends heavily on these capacitors.
Route the 25 MHz HSE crystal as close as possible to pins 12 (PH0-OSC_IN) and 13 (PH1-OSC_OUT), keeping the loop area under 100 mm squared and guarding it with ground. Use a crystal with load capacitance matched to the two external capacitors (typically 10-20 pF each) and verify the negative resistance margin exceeds 5x the crystal ESR. For Ethernet designs, route the RMII signals (REF_CLK, TXD0/1, TX_EN, RXD0/1, CRS_DV) as 50 ohm controlled-impedance traces and keep them away from the crystal and analog supply pins.
Do not leave the BOOT0 pin (pin 103) floating. It must be tied to VSS through a 10 kOhm resistor for normal Flash boot, or to VDD for system memory bootloader entry. Also ensure the PDR_ON pin (pin 143) is tied to VDD for normal operation; pulling it low disables the internal power-down reset and can prevent startup. Finally, the VDDA and VREF+ pins must be powered even if the ADC and DAC are unused, because the internal analog blocks share this rail.
Estimated: the STM32F746ZGT7 in the 144-LQFP package has a junction-to-ambient thermal resistance of approximately 40 C/W on a standard 4-layer board. At 216 MHz with Ethernet and USB active, total power dissipation is roughly 400 mW, giving a junction rise of about 16 C above ambient. This is well within the +105C limit for most industrial environments, but designs operating near the maximum ambient should add thermal vias under the exposed pad area and ensure adequate copper pour.
Informações de conformidade
RoHS and REACH compliance per STMicroelectronics product page. Not AEC-Q100 qualified; the STM32F746ZGT7 is an industrial-grade device rated -40C to +105C. Halogen-free status not stated in the provided data.
