STM32F746ZGT6 - 216MHz Cortex-M7 1MB Flash MCU | STMicroelectronics
MPN: STM32F746ZGT6 ✓ AktifSTM32F746ZGT6 Ringkasan
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.
Alternatif penggantian untuk STM32F746ZGT6 — 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 STM32F746ZGT6 (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, Flash Memory, Core, ADC.
STM32F745ZGT6
✅ Drop-InKontak untuk harga
Lihat Datasheet →STM32F746ZGT7
✅ Drop-InKontak untuk harga
Lihat Datasheet →STM32F756BGT6
✅ Drop-In✗ Habis Stok
$15.86 / Satuan
Lihat Datasheet →STM32F722ZET6
✅ Drop-In✓ Ada di Gudang
$6.2344 / Satuan
Lihat Datasheet →STM32H725REV6
✅ Drop-InKontak untuk harga
Lihat Datasheet →STM32F746ZGT6 Rating Maksimal & Karakteristik Listrik
| Core Architecture | Arm Cortex-M7 (32-bit) |
| Frekuensi Bawah Maximum | 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 |
| Paket | 144-LQFP (20x20 mm) |
| Suhu Kerja | -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) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
Konfigurasi Pin STM32F746ZGT6
| Pin produk 1 | PE2 — GPIO PE2 / TRACECLK / FSMC_A23 / SAI1_MCLK_A / EVENTOUT |
| Pin produk 2 | PE3 — GPIO PE3 / TRACED0 / FSMC_A19 / SAI1_SD_B / EVENTOUT |
| Pin produk 3 | PE4 — GPIO PE4 / TRACED1 / FSMC_A20 / SAI1_FS_A / EVENTOUT |
| Pin produk 4 | PE5 — GPIO PE5 / TRACED2 / FSMC_A21 / SAI1_SCK_A / TIM9_CH1 / EVENTOUT |
| Pin produk 5 | PE6 — GPIO PE6 / TRACED3 / FSMC_A22 / SAI1_SD_A / TIM9_CH2 / EVENTOUT |
| Pin produk 6 | VBAT — Backup battery domain supply |
| Pin produk 7 | PC13 — GPIO PC13 / RTC_TAMP1 / RTC_OUT / EVENTOUT |
| Pin produk 8 | PC14 — GPIO PC14 / RCC_LSCO / EVENTOUT |
| Pin produk 9 | PC15 — GPIO PC15 / EVENTOUT |
| Pin produk 10 | VSS — Ground |
| Pin produk 11 | VDD — Digital supply voltage |
| Pin produk 12 | PH0 — GPIO PH0 / RCC_OSC_IN |
| Pin produk 13 | PH1 — GPIO PH1 / RCC_OSC_OUT |
| Pin produk 14 | NRST — Reset input (active low) |
| Pin produk 15 | PC0 — GPIO PC0 / FMC_A0 / EVENTOUT |
| Pin produk 16 | PC1 — GPIO PC1 / TRACED0 / FMC_A1 / EVENTOUT |
| Pin produk 17 | PC2 — GPIO PC2 / FMC_A2 / EVENTOUT |
| Pin produk 18 | PC3 — GPIO PC3 / FMC_A3 / EVENTOUT |
| Pin produk 19 | VSSA — Analog ground |
| Pin produk 20 | VREF+ — ADC reference positive |
| Pin produk 21 | VDDA — Analog supply voltage |
| Pin produk 22 | PA0 — GPIO PA0 / UART4_TX / TIM5_CH1 / EVENTOUT |
| Pin produk 23 | PA1 — GPIO PA1 / UART4_RX / TIM5_CH2 / EVENTOUT |
| Pin produk 24 | PA2 — GPIO PA2 / USART2_TX / TIM5_CH3 / EVENTOUT |
| Pin produk 25 | PA3 — GPIO PA3 / USART2_RX / TIM5_CH4 / EVENTOUT |
| Pin produk 26 | VSS — Ground |
| Pin produk 27 | VDD — Digital supply voltage |
| Pin produk 28 | PA4 — GPIO PA4 / SPI1_NSS / USART2_CK / EVENTOUT |
| Pin produk 29 | PA5 — GPIO PA5 / SPI1_SCK / EVENTOUT |
| Pin produk 30 | PA6 — GPIO PA6 / SPI1_MISO / TIM13_CH1 / EVENTOUT |
| Pin produk 31 | PA7 — GPIO PA7 / SPI1_MOSI / TIM14_CH1 / EVENTOUT |
| Pin produk 32 | PC4 — GPIO PC4 / EVENTOUT |
| Pin produk 33 | PC5 — GPIO PC5 / EVENTOUT |
| Pin produk 34 | PB0 — GPIO PB0 / TIM3_CH3 / EVENTOUT |
| Pin produk 35 | PB1 — GPIO PB1 / TIM3_CH4 / EVENTOUT |
| Pin produk 36 | PB2 — GPIO PB2 / EVENTOUT |
| Pin produk 37 | PE7 — GPIO PE7 / FMC_D4 / TIM1_ETR / EVENTOUT |
| Pin produk 38 | PE8 — GPIO PE8 / FMC_D5 / EVENTOUT |
| Pin produk 39 | PE9 — GPIO PE9 / FMC_D6 / TIM1_CH1 / EVENTOUT |
| Pin produk 40 | VSS — Ground |
| Pin produk 41 | VDD — Digital supply voltage |
| Pin produk 42 | PE10 — GPIO PE10 / FMC_D7 / TIM1_CH2N / EVENTOUT |
| Pin produk 43 | PE11 — GPIO PE11 / FMC_D8 / TIM1_CH2 / EVENTOUT |
| Pin produk 44 | PE12 — GPIO PE12 / FMC_D9 / TIM1_CH3N / EVENTOUT |
| Pin produk 45 | PE13 — GPIO PE13 / FMC_D10 / TIM1_CH3 / EVENTOUT |
| Pin produk 46 | PE14 — GPIO PE14 / FMC_D11 / TIM1_CH4 / EVENTOUT |
| Pin produk 47 | PE15 — GPIO PE15 / FMC_D12 / TIM1_BKIN / EVENTOUT |
| Pin produk 48 | PB10 — GPIO PB10 / I2C2_SCL / USART3_TX / EVENTOUT |
| Pin produk 49 | PB11 — GPIO PB11 / I2C2_SDA / USART3_RX / EVENTOUT |
| Pin produk 50 | VCAP_1 — Core voltage decoupling (1.2 V internal LDO output) |
| Pin produk 51 | VDD — Digital supply voltage |
| Pin produk 52 | PB12 — GPIO PB12 / SPI2_NSS / I2S2_WS / EVENTOUT |
| Pin produk 53 | PB13 — GPIO PB13 / SPI2_SCK / I2S2_CK / EVENTOUT |
| Pin produk 54 | PB14 — GPIO PB14 / SPI2_MISO / TIM12_CH1 / EVENTOUT |
| Pin produk 55 | PB15 — GPIO PB15 / SPI2_MOSI / TIM12_CH2 / EVENTOUT |
| Pin produk 56 | PD8 — GPIO PD8 / FMC_D13 / USART3_TX / EVENTOUT |
| Pin produk 57 | PD9 — GPIO PD9 / FMC_D14 / USART3_RX / EVENTOUT |
| Pin produk 58 | PD10 — GPIO PD10 / FMC_D15 / EVENTOUT |
| Pin produk 59 | PD11 — GPIO PD11 / FMC_A16 / EVENTOUT |
| Pin produk 60 | PD12 — GPIO PD12 / FMC_A17 / EVENTOUT |
| Pin produk 61 | PD13 — GPIO PD13 / FMC_A18 / EVENTOUT |
| Pin produk 62 | VSS — Ground |
| Pin produk 63 | VDD — Digital supply voltage |
| Pin produk 64 | PD14 — GPIO PD14 / FMC_D0 / EVENTOUT |
| Pin produk 65 | PD15 — GPIO PD15 / FMC_D1 / EVENTOUT |
| Pin produk 66 | PG2 — GPIO PG2 / FMC_A12 / EVENTOUT |
| Pin produk 67 | PG3 — GPIO PG3 / FMC_A13 / EVENTOUT |
| Pin produk 68 | PG4 — GPIO PG4 / FMC_A14 / EVENTOUT |
| Pin produk 69 | PG5 — GPIO PG5 / FMC_A15 / EVENTOUT |
| Pin produk 70 | PG6 — GPIO PG6 / FMC_INT / EVENTOUT |
| Pin produk 71 | PG7 — GPIO PG7 / USART6_CK / EVENTOUT |
| Pin produk 72 | PG8 — GPIO PG8 / USART6_RTS / EVENTOUT |
| Pin produk 73 | VSS — Ground |
| Pin produk 74 | VDD — Digital supply voltage |
| Pin produk 75 | PC6 — GPIO PC6 / USART6_TX / TIM3_CH1 / EVENTOUT |
| Pin produk 76 | PC7 — GPIO PC7 / USART6_RX / TIM3_CH2 / EVENTOUT |
| Pin produk 77 | PC8 — GPIO PC8 / SDMMC1_D0 / TIM3_CH3 / EVENTOUT |
| Pin produk 78 | PC9 — GPIO PC9 / SDMMC1_D1 / TIM3_CH4 / EVENTOUT |
| Pin produk 79 | PA8 — GPIO PA8 / MCO1 / USART1_CK / TIM1_CH1 / EVENTOUT |
| Pin produk 80 | PA9 — GPIO PA9 / USART1_TX / TIM1_CH2 / EVENTOUT |
| Pin produk 81 | PA10 — GPIO PA10 / USART1_RX / TIM1_CH3 / EVENTOUT |
| Pin produk 82 | PA11 — GPIO PA11 / USB_OTG_FS_DM / EVENTOUT |
| Pin produk 83 | PA12 — GPIO PA12 / USB_OTG_FS_DP / EVENTOUT |
| Pin produk 84 | PA13 — GPIO PA13 / JTMS-SWDIO / EVENTOUT |
| Pin produk 85 | VCAP_2 — Core voltage decoupling (1.2 V internal LDO output) |
| Pin produk 86 | VDD — Digital supply voltage |
| Pin produk 87 | PA14 — GPIO PA14 / JTCK-SWCLK / EVENTOUT |
| Pin produk 88 | PA15 — GPIO PA15 / JTDI / SPI3_NSS / TIM2_CH1 / EVENTOUT |
| Pin produk 89 | PC10 — GPIO PC10 / SDMMC1_D2 / EVENTOUT |
| Pin produk 90 | PC11 — GPIO PC11 / SDMMC1_D3 / EVENTOUT |
| Pin produk 91 | PC12 — GPIO PC12 / SDMMC1_CK / EVENTOUT |
| Pin produk 92 | PD0 — GPIO PD0 / FMC_D2 / EVENTOUT |
| Pin produk 93 | PD1 — GPIO PD1 / FMC_D3 / EVENTOUT |
| Pin produk 94 | PD2 — GPIO PD2 / SDMMC1_CMD / EVENTOUT |
| Pin produk 95 | PD3 — GPIO PD3 / USART2_CTS / EVENTOUT |
| Pin produk 96 | PD4 — GPIO PD4 / USART2_RTS / EVENTOUT |
| Pin produk 97 | PD5 — GPIO PD5 / USART2_TX / EVENTOUT |
| Pin produk 98 | VSS — Ground |
| Pin produk 99 | VDD — Digital supply voltage |
| Pin produk 100 | PD6 — GPIO PD6 / USART2_RX / EVENTOUT |
| Pin produk 101 | PD7 — GPIO PD7 / USART2_CK / EVENTOUT |
| Pin produk 102 | PG9 — GPIO PG9 / DCMI_HSYNC / EVENTOUT |
| Pin produk 103 | PG10 — GPIO PG10 / DCMI_VSYNC / EVENTOUT |
| Pin produk 104 | PG11 — GPIO PG11 / DCMI_D5 / EVENTOUT |
| Pin produk 105 | PG12 — GPIO PG12 / FMC_NE4 / EVENTOUT |
| Pin produk 106 | PG13 — GPIO PG13 / FMC_A24 / EVENTOUT |
| Pin produk 107 | PG14 — GPIO PG14 / FMC_A25 / EVENTOUT |
| Pin produk 108 | VSS — Ground |
| Pin produk 109 | VDD — Digital supply voltage |
| Pin produk 110 | PG15 — GPIO PG15 / FMC_INT2 / EVENTOUT |
| Pin produk 111 | PB3 — GPIO PB3 / JTDO-SWO / SPI3_SCK / I2S3_CK / EVENTOUT |
| Pin produk 112 | PB4 — GPIO PB4 / NJTRST / SPI3_MISO / I2S3ext_SD / EVENTOUT |
| Pin produk 113 | PB5 — GPIO PB5 / I2C1_SMBAI / SPI3_MOSI / I2S3_SD / EVENTOUT |
| Pin produk 114 | PB6 — GPIO PB6 / I2C1_SCL / USART1_TX / EVENTOUT |
| Pin produk 115 | PB7 — GPIO PB7 / I2C1_SDA / USART1_RX / EVENTOUT |
| Pin produk 116 | BOOT0 — Boot mode selection input |
| Pin produk 117 | PB8 — GPIO PB8 / TIM4_CH3 / I2C1_SCL / EVENTOUT |
| Pin produk 118 | PB9 — GPIO PB9 / TIM4_CH4 / I2C1_SDA / EVENTOUT |
| Pin produk 119 | PE0 — GPIO PE0 / TIM4_ETR / EVENTOUT |
| Pin produk 120 | PE1 — GPIO PE1 / EVENTOUT |
| Pin produk 121 | VSS — Ground |
| Pin produk 122 | VDD — Digital supply voltage |
| Pin produk 123 | PI0 — GPIO PI0 / FMC_D24 / EVENTOUT |
| Pin produk 124 | PI1 — GPIO PI1 / FMC_D25 / EVENTOUT |
| Pin produk 125 | PI2 — GPIO PI2 / FMC_D26 / EVENTOUT |
| Pin produk 126 | PI3 — GPIO PI3 / FMC_D27 / EVENTOUT |
| Pin produk 127 | VSS — Ground |
| Pin produk 128 | VDD — Digital supply voltage |
| Pin produk 129 | PA6_WKUP — WKUP pin / GPIO PA6 alternate |
| Pin produk 130 | PA0_WKUP — WKUP pin / GPIO PA0 alternate |
| Pin produk 131 | PI4 — GPIO PI4 / FMC_NBL2 / EVENTOUT |
| Pin produk 132 | PI5 — GPIO PI5 / FMC_NBL3 / EVENTOUT |
| Pin produk 133 | PI7 — GPIO PI7 / FMC_D29 / EVENTOUT |
| Pin produk 134 | PI9 — GPIO PI9 / FMC_D30 / EVENTOUT |
| Pin produk 135 | PI10 — GPIO PI10 / FMC_D31 / EVENTOUT |
| Pin produk 136 | PI11 — GPIO PI11 / EVENTOUT |
| Pin produk 137 | VSS — Ground |
| Pin produk 138 | VDD — Digital supply voltage |
| Pin produk 139 | PF0 — GPIO PF0 / FMC_A0 / I2C2_SDA / EVENTOUT |
| Pin produk 140 | PF1 — GPIO PF1 / FMC_A1 / I2C2_SCL / EVENTOUT |
| Pin produk 141 | PF2 — GPIO PF2 / FMC_A2 / EVENTOUT |
| Pin produk 142 | PF3 — GPIO PF3 / FMC_A3 / EVENTOUT |
| Pin produk 143 | PF4 — GPIO PF4 / FMC_A4 / EVENTOUT |
| Pin produk 144 | PF5 — GPIO PF5 / FMC_A5 / EVENTOUT |
Aplikasi Umum
STM32F746ZGT6 cocok untuk 6 aplikasis: 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%.
Direkomendasikan
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%.
Direkomendasikan
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%.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk STM32F746ZGT6 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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) |
Diferensiator Kunci
- Lower-cost pin-compatible Ethernet-less alternative available (vsSTM32F745ZGT6)
- Extended temperature grade variant available (vsSTM32F746ZGT7)
- Higher-performance upgrade to Cortex-M7 at 550 MHz (vsSTM32H725REV6)
Catatan Desain
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.
Informasi Konformitas
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.