STM32F746ZGT7 - 216MHz Cortex-M7 1MB Flash MCU | STMicroelectronics
MPN: STM32F746ZGT7 ✓ AktifSTM32F746ZGT7 Ringkasan
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.
Alternatif penggantian untuk STM32F746ZGT7 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian STM32F746ZGT7 (sama faktor bentuk dan footprint) — berbeda di dalam Package, Flash Memory, LCD-TFT Controller, Operating Temperature, DAC.
STM32F746ZGT6
✅ Drop-InKontak untuk harga
Lihat Datasheet →STM32F745ZGT7
✅ Drop-InKontak untuk harga
Lihat Datasheet →STM32F746ZET7
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
STM32F746ZGT7TR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
STM32F745ZET7
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
STM32F746ZGT7 Rating Maksimal & Karakteristik Listrik
| 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 |
| Paket | 144-LQFP (20x20 mm) |
| Jumlah Pin | 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 |
| Suhu Kerja | -40C to +105C |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
Konfigurasi Pin STM32F746ZGT7
| Pin produk 1 | PE2 — GPIO / TRACECLK / SAI1_MCLK_A / ETH_MII_TXD3 |
| Pin produk 2 | PE3 — GPIO / TRACED0 / SAI1_SD_B |
| Pin produk 3 | PE4 — GPIO / TRACED1 / SAI1_FS_A / DCMI_D4 |
| Pin produk 4 | PE5 — GPIO / TRACED2 / SAI1_SCK_A / DCMI_D6 |
| Pin produk 5 | PE6 — GPIO / TRACED3 / SAI1_SD_A / DCMI_D7 |
| Pin produk 6 | VBAT — Backup battery supply |
| Pin produk 7 | PC13 — GPIO / RTC_TAMP1 / RTC_TS / WKUP2 |
| Pin produk 8 | PC14-OSC32_IN — LSE oscillator input / GPIO |
| Pin produk 9 | PC15-OSC32_OUT — LSE oscillator output / GPIO |
| Pin produk 10 | VSS — Ground |
| Pin produk 11 | VDD — Digital power supply |
| Pin produk 12 | PH0-OSC_IN — HSE oscillator input / GPIO |
| Pin produk 13 | PH1-OSC_OUT — HSE oscillator output / GPIO |
| Pin produk 14 | NRST — Reset input (active low) |
| Pin produk 15 | PC0 — GPIO / ADC123_IN10 / SAI1_MCLK_B |
| Pin produk 16 | PC1 — GPIO / ADC123_IN11 / ETH_MDC |
| Pin produk 17 | PC2 — GPIO / ADC123_IN12 / ETH_MII_TXD2 |
| Pin produk 18 | PC3 — GPIO / ADC123_IN13 / ETH_MII_TX_CLK |
| Pin produk 19 | VDD — Digital power supply |
| Pin produk 20 | VSSA — Analog ground |
| Pin produk 21 | VREF+ — ADC/DAC reference voltage |
| Pin produk 22 | VDDA — Analog power supply |
| Pin produk 23 | PA0-WKUP — GPIO / ADC123_IN0 / TIM2_CH1 / WKUP1 |
| Pin produk 24 | PA1 — GPIO / ADC123_IN1 / TIM2_CH2 / ETH_RMII_REF_CLK |
| Pin produk 25 | PA2 — GPIO / ADC123_IN2 / TIM2_CH3 / ETH_MDIO |
| Pin produk 26 | PA3 — GPIO / ADC123_IN3 / TIM2_CH4 / ETH_MII_COL |
| Pin produk 27 | VSS — Ground |
| Pin produk 28 | VDD — Digital power supply |
| Pin produk 29 | PA4 — GPIO / ADC12_IN4 / DAC_OUT1 / SPI1_NSS |
| Pin produk 30 | PA5 — GPIO / ADC12_IN5 / DAC_OUT2 / SPI1_SCK |
| Pin produk 31 | PA6 — GPIO / ADC12_IN6 / TIM3_CH1 / SPI1_MISO |
| Pin produk 32 | PA7 — GPIO / ADC12_IN7 / TIM3_CH2 / SPI1_MOSI / ETH_RMII_CRS_DV |
| Pin produk 33 | PC4 — GPIO / ADC123_IN14 / ETH_RMII_RXD0 |
| Pin produk 34 | PC5 — GPIO / ADC123_IN15 / ETH_RMII_RXD1 |
| Pin produk 35 | PB0 — GPIO / ADC12_IN8 / TIM3_CH3 / ETH_MII_RXD2 |
| Pin produk 36 | PB1 — GPIO / ADC12_IN9 / TIM3_CH4 / ETH_MII_RXD3 |
| Pin produk 37 | PB2 — GPIO / RTC_ALARM_OUT / ETH_MII_TX_ER |
| Pin produk 38 | PE7 — GPIO / TIM1_ETR / FMC_D4 / DCMI_D2 |
| Pin produk 39 | PE8 — GPIO / TIM1_CH1N / FMC_D5 / DCMI_D3 |
| Pin produk 40 | PE9 — GPIO / TIM1_CH1 / FMC_D6 / DCMI_D0 |
| Pin produk 41 | PE10 — GPIO / TIM1_CH2N / FMC_D7 / DCMI_D1 |
| Pin produk 42 | PE11 — GPIO / TIM1_CH2 / FMC_D8 / SPI4_NSS |
| Pin produk 43 | PE12 — GPIO / TIM1_CH3N / FMC_D9 / SPI4_SCK |
| Pin produk 44 | PE13 — GPIO / TIM1_CH3 / FMC_D10 / SPI4_MISO |
| Pin produk 45 | PE14 — GPIO / TIM1_CH4 / FMC_D11 / SPI4_MOSI |
| Pin produk 46 | PE15 — GPIO / TIM1_BKIN / FMC_D12 |
| Pin produk 47 | PB10 — GPIO / TIM2_CH3 / I2C2_SCL / ETH_MII_RX_ER |
| Pin produk 48 | PB11 — GPIO / TIM2_CH4 / I2C2_SDA / ETH_RMII_TX_EN |
| Pin produk 49 | VCAP_1 — Core voltage regulator capacitor |
| Pin produk 50 | VDD — Digital power supply |
| Pin produk 51 | PB12 — GPIO / TIM1_BKIN / I2C2_SMBA / SPI2_NSS / CAN2_RX |
| Pin produk 52 | PB13 — GPIO / TIM1_CH1N / SPI2_SCK / CAN2_TX |
| Pin produk 53 | PB14 — GPIO / TIM1_CH2N / SPI2_MISO / USART3_TX |
| Pin produk 54 | PB15 — GPIO / TIM1_CH3N / SPI2_MOSI / USART3_RX |
| Pin produk 55 | PD8 — GPIO / USART3_TX / FMC_D13 |
| Pin produk 56 | PD9 — GPIO / USART3_RX / FMC_D14 |
| Pin produk 57 | PD10 — GPIO / USART3_CK / FMC_D15 |
| Pin produk 58 | PD11 — GPIO / USART3_CTS / FMC_A16 / FMC_CLE |
| Pin produk 59 | PD12 — GPIO / TIM4_CH1 / FMC_A17 / FMC_ALE |
| Pin produk 60 | PD13 — GPIO / TIM4_CH2 / FMC_A18 |
| Pin produk 61 | PD14 — GPIO / TIM4_CH3 / FMC_D0 |
| Pin produk 62 | PD15 — GPIO / TIM4_CH4 / FMC_D1 |
| Pin produk 63 | PC6 — GPIO / TIM3_CH1 / USART6_TX / DCMI_D0 / SDMMC1_D0 |
| Pin produk 64 | PC7 — GPIO / TIM3_CH2 / USART6_RX / DCMI_D1 / SDMMC1_D1 |
| Pin produk 65 | PC8 — GPIO / TIM3_CH3 / USART6_CK / DCMI_D2 / SDMMC1_D2 |
| Pin produk 66 | PC9 — GPIO / TIM3_CH4 / I2C3_SDA / DCMI_D3 / SDMMC1_D3 |
| Pin produk 67 | PA8 — GPIO / TIM1_CH1 / I2C3_SCL / USART1_CK / MCO1 |
| Pin produk 68 | PA9 — GPIO / TIM1_CH2 / USART1_TX / USB_OTG_FS_ID |
| Pin produk 69 | PA10 — GPIO / TIM1_CH3 / USART1_RX / USB_OTG_FS_DM |
| Pin produk 70 | PA11 — GPIO / TIM1_CH4 / USART1_CTS / USB_OTG_FS_DP / CAN1_RX |
| Pin produk 71 | PA12 — GPIO / TIM1_ETR / USART1_RTS / USB_OTG_FS_DP / CAN1_TX |
| Pin produk 72 | PA13 — GPIO / JTMS-SWDIO |
| Pin produk 73 | VCAP_2 — Core voltage regulator capacitor |
| Pin produk 74 | VSS — Ground |
| Pin produk 75 | VDD — Digital power supply |
| Pin produk 76 | PA14 — GPIO / JTCK-SWCLK |
| Pin produk 77 | PA15 — GPIO / JTDI / TIM2_CH1 / SPI1_NSS |
| Pin produk 78 | PC10 — GPIO / USART3_TX / SPI3_SCK / SDMMC1_D2 / DCMI_D8 |
| Pin produk 79 | PC11 — GPIO / USART3_RX / SPI3_MISO / SDMMC1_D3 / DCMI_D4 |
| Pin produk 80 | PC12 — GPIO / USART3_CK / SPI3_MOSI / SDMMC1_CK / DCMI_D9 |
| Pin produk 81 | PD0 — GPIO / CAN1_RX / FMC_D2 |
| Pin produk 82 | PD1 — GPIO / CAN1_TX / FMC_D3 |
| Pin produk 83 | PD2 — GPIO / TIM3_ETR / SDMMC1_CMD / DCMI_D11 |
| Pin produk 84 | PD3 — GPIO / USART2_CTS / FMC_CLK / DCMI_D5 |
| Pin produk 85 | PD4 — GPIO / USART2_RTS / FMC_NOE |
| Pin produk 86 | PD5 — GPIO / USART2_TX / FMC_NWE |
| Pin produk 87 | PD6 — GPIO / USART2_RX / FMC_NWAIT / DCMI_D10 |
| Pin produk 88 | PD7 — GPIO / USART2_CK / FMC_NE1 |
| Pin produk 89 | PG9 — GPIO / USART6_RX / FMC_NE2 / DCMI_VSYNC |
| Pin produk 90 | PG10 — GPIO / FMC_NE3 / DCMI_D2 / LCD_G3 |
| Pin produk 91 | PG11 — GPIO / ETH_MII_TX_EN / DCMI_D3 / LCD_B3 |
| Pin produk 92 | PG12 — GPIO / USART6_RTS / FMC_NE4 / LCD_B4 |
| Pin produk 93 | PG13 — GPIO / USART6_CTS / ETH_MII_TXD0 / FMC_A24 |
| Pin produk 94 | PG14 — GPIO / USART6_TX / ETH_MII_TXD1 / FMC_A25 |
| Pin produk 95 | VSS — Ground |
| Pin produk 96 | VDD — Digital power supply |
| Pin produk 97 | PG15 — GPIO / USART6_CTS / DCMI_D13 |
| Pin produk 98 | PB3 — GPIO / JTDO / TIM2_CH2 / SPI1_SCK / ETH_MII_TX_CLK |
| Pin produk 99 | PB4 — GPIO / NJTRST / TIM3_CH1 / SPI1_MISO |
| Pin produk 100 | PB5 — GPIO / TIM3_CH2 / SPI1_MOSI / CAN2_RX / ETH_PPS_OUT |
| Pin produk 101 | PB6 — GPIO / TIM4_CH1 / I2C1_SCL / USART1_TX / CAN2_TX |
| Pin produk 102 | PB7 — GPIO / TIM4_CH2 / I2C1_SDA / USART1_RX / FMC_NL |
| Pin produk 103 | BOOT0 — Boot mode selection |
| Pin produk 104 | PB8 — GPIO / TIM4_CH3 / I2C1_SCL / CAN1_RX / SDMMC1_D4 |
| Pin produk 105 | PB9 — GPIO / TIM4_CH4 / I2C1_SDA / CAN1_TX / SDMMC1_D5 |
| Pin produk 106 | PE0 — GPIO / TIM4_ETR / FMC_NBL0 / DCMI_D2 |
| Pin produk 107 | PE1 — GPIO / FMC_NBL1 / DCMI_D3 |
| Pin produk 108 | VSS — Ground |
| Pin produk 109 | VDD — Digital power supply |
| Pin produk 110 | PF0 — GPIO / I2C2_SDA / FMC_A0 |
| Pin produk 111 | PF1 — GPIO / I2C2_SCL / FMC_A1 |
| Pin produk 112 | PF2 — GPIO / I2C2_SMBA / FMC_A2 |
| Pin produk 113 | PF3 — GPIO / ADC3_IN9 / FMC_A3 |
| Pin produk 114 | PF4 — GPIO / ADC3_IN14 / FMC_A4 |
| Pin produk 115 | PF5 — GPIO / ADC3_IN15 / FMC_A5 |
| Pin produk 116 | VSS — Ground |
| Pin produk 117 | VDD — Digital power supply |
| Pin produk 118 | PF6 — GPIO / ADC3_IN4 / TIM10_CH1 / FMC_A6 |
| Pin produk 119 | PF7 — GPIO / ADC3_IN5 / TIM11_CH1 / FMC_A7 |
| Pin produk 120 | PF8 — GPIO / ADC3_IN6 / TIM13_CH1 / FMC_A8 |
| Pin produk 121 | PF9 — GPIO / ADC3_IN7 / TIM14_CH1 / FMC_A9 |
| Pin produk 122 | PF10 — GPIO / ADC3_IN8 / FMC_A10 |
| Pin produk 123 | PH2 — GPIO / ETH_MII_CRS / FMC_SDCKE0 / LCD_R0 |
| Pin produk 124 | PH3 — GPIO / ETH_MII_COL / FMC_SDNE0 / LCD_R1 |
| Pin produk 125 | PH4 — GPIO / I2C2_SCL / USB_OTG_HS_ULPI_NXT / LCD_G4 |
| Pin produk 126 | PH5 — GPIO / I2C2_SDA / SPI5_NSS / LCD_G5 |
| Pin produk 127 | PF11 — GPIO / SPI5_MOSI / DCMI_D12 / LCD_G6 |
| Pin produk 128 | PF12 — GPIO / FMC_A11 / LCD_G7 |
| Pin produk 129 | VSS — Ground |
| Pin produk 130 | VDD — Digital power supply |
| Pin produk 131 | PF13 — GPIO / FMC_A12 / LCD_G7 |
| Pin produk 132 | PF14 — GPIO / FMC_A13 / LCD_G7 |
| Pin produk 133 | PF15 — GPIO / FMC_A14 / LCD_G7 |
| Pin produk 134 | PG0 — GPIO / FMC_A15 / LCD_G7 |
| Pin produk 135 | PG1 — GPIO / FMC_A16 / LCD_G7 |
| Pin produk 136 | PE2 — GPIO / TRACECLK / SAI1_MCLK_A / ETH_MII_TXD3 |
| Pin produk 137 | PE3 — GPIO / TRACED0 / SAI1_SD_B |
| Pin produk 138 | PE4 — GPIO / TRACED1 / SAI1_FS_A / DCMI_D4 |
| Pin produk 139 | PE5 — GPIO / TRACED2 / SAI1_SCK_A / DCMI_D6 |
| Pin produk 140 | PE6 — GPIO / TRACED3 / SAI1_SD_A / DCMI_D7 |
| Pin produk 141 | VSS — Ground |
| Pin produk 142 | VDD — Digital power supply |
| Pin produk 143 | PDR_ON — Power-down reset enable |
| Pin produk 144 | VDD — Digital power supply |
Aplikasi Umum
STM32F746ZGT7 cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk STM32F746ZGT7 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Higher temperature grade than STM32F746ZGT6 (vsSTM32F746ZGT6)
- Integrated LCD-TFT controller and Chrom-ART Accelerator (vsSTM32F745ZGT7)
- Double the Flash of the STM32F746ZET7 (vsSTM32F746ZET7)
- Full graphics and networking feature set in one package (vsSTM32F429ZGT6)
Catatan Desain
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.
Informasi Konformitas
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.
