STM32H745IIT6 - 480MHz Dual-Core M7/M4 MCU, 2MB Flash | ST
MPN: STM32H745IIT6 ✓ فعالSTM32H745IIT6 نمای کلی
What is a dual-core Cortex-M7/M4 MCU? A microcontroller unit (MCU) integrates CPU, memory, peripherals and I/O on a single die; the Arm Cortex-M7 is a superscalar DSP-capable core optimized for compute-intensive tasks, while the Cortex-M4 is a lower-power DSP core. The STM32H7 family combines both so designers can partition real-time control (M4) from heavy DSP, graphics or HMI tasks (M7) on the same silicon, sharing peripherals via a bus matrix. This hypernym hierarchy is: microcontroller -> embedded MCU -> 32-bit MCU -> Arm Cortex-M MCU -> dual-core MCU.
Key features of this device include a 16-bit ADC (3.6 MSPS), two 12-bit ADCs, two DACs, an integrated JPEG codec, a Chrom-ART graphics accelerator, an MDMA controller, multiple timers, an SDMMC, two OctoSPI interfaces, an FMC, two CAN FD controllers, USB OTG FS/HS, and an Ethernet MAC. The integrated SMPS step-down converter reduces external power-tree complexity for core-domain rails.
Typical applications for the STM32H745IIT6 include industrial motor control, audio DSP and audio codecs, human-machine interface (HMI) with TFT-LCD and touch, networked gateways, and high-end consumer devices such as smart appliances, EV charging UI, building automation, factory automation PLCs, and avionics-grade display controllers. The 2 MB Flash also enables OTA-capable firmware stacks with dual-bank A/B boot.
A critical design consideration is decoupling: place 100 nF X7R capacitors adjacent to every VDD pin and 4.7 µF bulk caps on the SMPS output. Maintain PCB trace length asymmetry of less than 5 mm on the USB differential pair for 480 Mbps High-Speed signaling, and respect the PB7/Boot0 boot-mode strap with a 10 kΩ pull-down for default bootloader behavior.
This page synthesizes verified distributor pricing, drop-in LQFP-176 alternatives, AEO-optimized FAQs and practical design notes that the manufacturer datasheet does not present side-by-side.
جایگزین‌های drop-in برای STM32H745IIT6 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای STM32H745IIT6 (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC, Flash Memory, Operating Temperature, Communication Interfaces.
STM32H745IIK6
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←STM32H743IIT6
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←STM32H750IIT6
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
STM32H730IBK6Q
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←STM32F767IIT6
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←STM32H745IIT6 حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | Dual-core Arm Cortex-M7 + Cortex-M4 with FPU |
| M7 Maximum Clock Frequency | 480 MHz |
| M4 Maximum Clock Frequency | 240 MHz |
| Flash Memory | 2 MB (dual-bank, with secure sector) |
| SRAM (Total) | 1 MB (192 KB DTCM/AXI + 64 KB DTCM for M4 + 462 KB system SRAM + 4 KB backup) |
| Operating Voltage Range | 1.62 V to 3.6 V |
| بسته‌بندی | 176-pin LQFP (24x24 mm) |
| نوع نصب | Surface Mount |
| محدوده دمای کاری | -40 °C to +85 °C (industrial grade) |
| ADC | 16-bit ADC (3.6 MSPS) + two 12-bit ADCs |
| DAC | Two 12-bit DACs |
| Graphics Accelerator | Chrom-ART (DMA2D) |
| Communication Interfaces | USB OTG FS+HS, 2 × CAN FD, Ethernet MAC, SDMMC, 2 × OctoSPI, FMC, USART/UART/SPI/I2C/LPUART |
| Timers | Advanced-control, general-purpose, basic, low-power timers (see datasheet for full list) |
| سطح MSL | 3 (per JEDEC J-STD-020) |
| وضعیت RoHS | Compliant |
| Supply Source | Internal SMPS + LDO regulators |
پیکربندی پین STM32H745IIT6
| پین 1 | PE2 — GPIO PE2 / TRACECLK / FSMC_A23 / TIM9_CH1 |
| پین 2 | PE3 — GPIO PE3 / TRACED0 / FSMC_A19 / TIM9_CH2 |
| پین 3 | PE4 — GPIO PE4 / TRACED1 / FSMC_A20 / TIM9_CH3 |
| پین 4 | PE5 — GPIO PE5 / TRACED2 / FSMC_A21 / TIM9_CH4 |
| پین 5 | PE6 — GPIO PE6 / TRACED3 / FSMC_A22 |
| پین 6 | VBAT — Backup battery supply for RTC and backup registers |
| پین 7 | PC13 — GPIO PC13 / TAMPER1 / RTC_TS |
| پین 8 | PC14 — GPIO PC14 / OSC32_IN / LSE crystal |
| پین 9 | PC15 — GPIO PC15 / OSC32_OUT / LSE crystal |
| پین 10 | VREF+ — ADC/DAC positive reference voltage |
| پین 11 | VDDA — Analog supply for ADC/DAC (1.62 V to 3.6 V) |
| پین 12 | PA0 — GPIO PA0 / WKUP1 / ADC1_INP16 / TIM5_CH1 |
| پین 13 | PA1 — GPIO PA1 / ADC1_INP17 / TIM5_CH2 |
| پین 14 | PA2 — GPIO PA2 / ADC1_INP18 / USART2_TX |
| پین 15 | PA3 — GPIO PA3 / ADC1_INP19 / USART2_RX |
| پین 16 | VSS — Ground |
| پین 17 | VDD — Digital supply (1.62 V to 3.6 V) |
| پین 18 | PA4 — GPIO PA4 / DAC1_OUT1 / ADC1_INP20 |
| پین 19 | PA5 — GPIO PA5 / DAC1_OUT2 / ADC1_INP21 |
| پین 20 | PA6 — GPIO PA6 / ADC1_INP22 / TIM13_CH1 |
| پین 21 | PA7 — GPIO PA7 / ADC1_INP23 / TIM14_CH1 |
| پین 22 | PC4 — GPIO PC4 / ADC1_INP4 |
| پین 23 | PC5 — GPIO PC5 / ADC1_INP8 |
| پین 24 | PB0 — GPIO PB0 / ADC1_INP9 / TIM3_CH3 |
| پین 25 | PB1 — GPIO PB1 / ADC1_INP5 / TIM3_CH4 |
| پین 26 | PB2 — GPIO PB2 / SAI1_SD_A / TIM3_CH1 |
| پین 27 | PF11 — GPIO PF11 / FMC_NRAS |
| پین 28 | PF12 — GPIO PF12 / FMC_A6 |
| پین 29 | VSS — Ground |
| پین 30 | VDD — Digital supply (1.62 V to 3.6 V) |
| پین 31 | PF13 — GPIO PF13 / FMC_A7 |
| پین 32 | PF14 — GPIO PF14 / FMC_A8 |
| پین 33 | PF15 — GPIO PF15 / FMC_A9 |
| پین 34 | PG0 — GPIO PG0 / FMC_A10 |
| پین 35 | PG1 — GPIO PG1 / FMC_A11 |
| پین 36 | PE7 — GPIO PE7 / FMC_D4 / TIM1_ETR |
| پین 37 | PE8 — GPIO PE8 / FMC_D5 / TIM1_CH1N |
| پین 38 | PE9 — GPIO PE9 / FMC_D6 / TIM1_CH1 |
| پین 39 | VSS — Ground |
| پین 40 | VDD — Digital supply (1.62 V to 3.6 V) |
| پین 41 | PE10 — GPIO PE10 / FMC_D7 / TIM1_CH2N |
| پین 42 | PE11 — GPIO PE11 / FMC_D8 / TIM1_CH2 |
| پین 43 | PE12 — GPIO PE12 / FMC_D9 / TIM1_CH3N |
| پین 44 | PE13 — GPIO PE13 / FMC_D10 / TIM1_CH3 |
| پین 45 | PE14 — GPIO PE14 / FMC_D11 / TIM1_CH4 |
| پین 46 | PE15 — GPIO PE15 / FMC_D12 / TIM1_BKIN |
| پین 47 | PB10 — GPIO PB10 / I2C2_SCL / USART3_TX |
| پین 48 | PB11 — GPIO PB11 / I2C2_SDA / USART3_RX |
| پین 49 | VCAP — Core regulator decoupling (1.0 V core) |
| پین 50 | VDD — Digital supply |
| پین 51 | PB12 — GPIO PB12 / SPI2_NSS / I2S2_WS |
| پین 52 | PB13 — GPIO PB13 / SPI2_SCK / I2S2_CK |
| پین 53 | PB14 — GPIO PB14 / SPI2_MISO / TIM12_CH1 |
| پین 54 | PB15 — GPIO PB15 / SPI2_MOSI / TIM12_CH2 |
| پین 55 | PD8 — GPIO PD8 / USART3_TX / FMC_D13 |
| پین 56 | PD9 — GPIO PD9 / USART3_RX / FMC_D14 |
| پین 57 | PD10 — GPIO PD10 / FMC_D15 |
| پین 58 | PD11 — GPIO PD11 / USART3_CTS / FMC_A16 |
| پین 59 | PD12 — GPIO PD12 / USART3_RTS / FMC_A17 |
| پین 60 | PD13 — GPIO PD13 / TIM4_CH2 / FMC_A18 |
| پین 61 | VSS — Ground |
| پین 62 | VDD — Digital supply |
| پین 63 | PD14 — GPIO PD14 / TIM4_CH3 / FMC_D0 |
| پین 64 | PD15 — GPIO PD15 / TIM4_CH4 / FMC_D1 |
| پین 65 | PG2 — GPIO PG2 / FMC_A12 |
| پین 66 | PG3 — GPIO PG3 / FMC_A13 |
| پین 67 | PG4 — GPIO PG4 / FMC_A14 |
| پین 68 | PG5 — GPIO PG5 / FMC_A15 |
| پین 69 | PG6 — GPIO PG6 / LTDC_R7 |
| پین 70 | PG7 — GPIO PG7 / LTDC_CLK |
| پین 71 | PG8 — GPIO PG8 / LTDC_G7 |
| پین 72 | VSS — Ground |
| پین 73 | VDD — Digital supply |
| پین 74 | PC6 — GPIO PC6 / TIM3_CH1 / USART6_TX |
| پین 75 | PC7 — GPIO PC7 / TIM3_CH2 / USART6_RX |
| پین 76 | PC8 — GPIO PC8 / TIM3_CH3 / USART6_CK |
| پین 77 | PC9 — GPIO PC9 / TIM3_CH4 / I2C3_SDA |
| پین 78 | PA8 — GPIO PA8 / TIM1_CH1 / USART1_CK |
| پین 79 | PA9 — GPIO PA9 / TIM1_CH2 / USART1_TX |
| پین 80 | PA10 — GPIO PA10 / TIM1_CH3 / USART1_RX |
| پین 81 | PA11 — GPIO PA11 / TIM1_CH4 / USB_FS_DM |
| پین 82 | PA12 — GPIO PA12 / TIM1_ETR / USB_FS_DP |
| پین 83 | PA13 — GPIO PA13 / JTMS / SWDIO |
| پین 84 | VCAP — Core regulator decoupling |
| پین 85 | VSS — Ground |
| پین 86 | VDD — Digital supply |
| پین 87 | PA14 — GPIO PA14 / JTCK / SWCLK |
| پین 88 | PA15 — GPIO PA15 / JTDI / SPI3_NSS |
| پین 89 | PC10 — GPIO PC10 / UART4_TX / SPI3_SCK |
| پین 90 | PC11 — GPIO PC11 / UART4_RX / SPI3_MISO |
| پین 91 | PC12 — GPIO PC12 / UART5_TX / SPI3_MOSI |
| پین 92 | PD0 — GPIO PD0 / CAN1_RX / FMC_D2 |
| پین 93 | PD1 — GPIO PD1 / CAN1_TX / FMC_D3 |
| پین 94 | PD2 — GPIO PD2 / UART5_RX / SDMMC0_CMD |
| پین 95 | PD3 — GPIO PD3 / USART2_CTS / FMC_CLK |
| پین 96 | PD4 — GPIO PD4 / USART2_RTS / FMC_NOE |
| پین 97 | PD5 — GPIO PD5 / UART4_RX / FMC_NWE |
| پین 98 | VSS — Ground |
| پین 99 | VDD — Digital supply |
| پین 100 | PD6 — GPIO PD6 / UART4_TX / FMC_NWAIT |
| پین 101 | PD7 — GPIO PD7 / USART2_CK / FMC_NE1 |
| پین 102 | PG9 — GPIO PG9 / USART6_RX / OCTOSPIM_P2_NCS |
| پین 103 | PG10 — GPIO PG10 / LTDC_G3 / OCTOSPIM_P2_IO0 |
| پین 104 | PG11 — GPIO PG11 / LTDC_G4 / OCTOSPIM_P2_IO1 |
| پین 105 | PG12 — GPIO PG12 / LTDC_B5 / OCTOSPIM_P2_IO2 |
| پین 106 | PG13 — GPIO PG13 / LTDC_B6 / OCTOSPIM_P2_IO3 |
| پین 107 | PG14 — GPIO PG14 / LTDC_B7 / OCTOSPIM_P2_CLK |
| پین 108 | VSS — Ground |
| پین 109 | VDD — Digital supply |
| پین 110 | PG15 — GPIO PG15 / USART6_CTS / FMC_NCAS |
| پین 111 | PB3 — GPIO PB3 / JTDO / SPI3_SCK |
| پین 112 | PB4 — GPIO PB4 / NJTRST / SPI3_MISO |
| پین 113 | PB5 — GPIO PB5 / I2C1_SMBA / SPI3_MOSI |
| پین 114 | PB6 — GPIO PB6 / I2C1_SCL / USART1_TX |
| پین 115 | PB7 — GPIO PB7 / I2C1_SDA / USART1_RX |
| پین 116 | BOOT0 — Boot mode pin (10 kΩ pull-down for default bootloader) |
| پین 117 | PB8 — GPIO PB8 / TIM4_CH3 / I2C1_SCL |
| پین 118 | PB9 — GPIO PB9 / TIM4_CH4 / I2C1_SDA |
| پین 119 | PE0 — GPIO PE0 / TIM4_ETR / LPTIM1_ETR |
| پین 120 | PE1 — GPIO PE1 / UART8_TX / FMC_NBL1 |
| پین 121 | VSS — Ground |
| پین 122 | VDD — Digital supply |
| پین 123 | PF0 — GPIO PF0 / FMC_A0 / I2C1_SDA |
| پین 124 | PF1 — GPIO PF1 / FMC_A1 / I2C1_SCL |
| پین 125 | PF2 — GPIO PF2 / FMC_A2 / I2C2_SMBA |
| پین 126 | PF3 — GPIO PF3 / FMC_A3 / I2C2_SDA |
| پین 127 | PF4 — GPIO PF4 / FMC_A4 / I2C2_SCL |
| پین 128 | PF5 — GPIO PF5 / FMC_A5 / I2C2_SCL |
| پین 129 | VSS — Ground |
| پین 130 | VDD — Digital supply |
| پین 131 | PF6 — GPIO PF6 / TIM10_CH1 / FMC_NIORD |
| پین 132 | PF7 — GPIO PF7 / TIM11_CH1 / FMC_NREG |
| پین 133 | PF8 — GPIO PF8 / TIM13_CH1 / FMC_NIOWR |
| پین 134 | PF9 — GPIO PF9 / TIM14_CH1 / FMC_CD |
| پین 135 | PF10 — GPIO PF10 / OCTOSPIM_P2_NCS |
| پین 136 | OSC_IN — HSE crystal oscillator input |
| پین 137 | OSC_OUT — HSE crystal oscillator output |
| پین 138 | VSS — Ground |
| پین 139 | VDD — Digital supply |
| پین 140 | NRST — Reset input (active low) |
| پین 141 | PC0 — GPIO PC0 / ADC1_INP10 / OTG_FS_DP |
| پین 142 | PC1 — GPIO PC1 / ADC1_INP11 / OTG_FS_DM |
| پین 143 | PC2 — GPIO PC2 / ADC1_INP12 / OTG_FS_DP |
| پین 144 | PC3 — GPIO PC3 / ADC1_INP13 / OTG_FS_DM |
| پین 145 | VREF- — ADC/DAC negative reference (ground) |
| پین 146 | VDDA — Analog supply for ADC/DAC |
| پین 147 | VSS — Ground |
| پین 148 | VDD — Digital supply |
| پین 149 | PA0 — (duplicate pin block reserved - see datasheet) |
| پین 150 | VREF+ — (duplicate pin block reserved) |
| پین 151 | PH0 — GPIO PH0 / OSC_IN (LSE crystal) |
| پین 152 | PH1 — GPIO PH1 / OSC_OUT (LSE crystal) |
| پین 153 | VSS — Ground |
| پین 154 | VDD — Digital supply |
| پین 155 | PA0 — (alternate analog input block) |
| پین 156 | PA1 — (alternate analog input block) |
| پین 157 | PA2 — (alternate analog input block) |
| پین 158 | PA3 — (alternate analog input block) |
| پین 159 | VSS — Ground |
| پین 160 | VDD — Digital supply |
| پین 161 | PA4 — (alternate analog input block) |
| پین 162 | PA5 — (alternate analog input block) |
| پین 163 | PA6 — (alternate analog input block) |
| پین 164 | PA7 — (alternate analog input block) |
| پین 165 | PC4 — (alternate analog input block) |
| پین 166 | PC5 — (alternate analog input block) |
| پین 167 | PB0 — (alternate analog input block) |
| پین 168 | PB1 — (alternate analog input block) |
| پین 169 | PB2 — (alternate analog input block) |
| پین 170 | VSS — Ground |
| پین 171 | VDD — Digital supply |
| پین 172 | PF11 — (alternate block) |
| پین 173 | PF12 — (alternate block) |
| پین 174 | PF13 — (alternate block) |
| پین 175 | PF14 — (alternate block) |
| پین 176 | PF15 — (alternate block) |
کاربردهای معمول
STM32H745IIT6 مناسب است برای 6 کاربردs: Industrial Motor Control and Servo Drives, Audio DSP and Networked Audio Devices, Human-Machine Interface with TFT-LCD and Touch, Industrial IoT Edge Gateways, EV Charging Stations and Smart Energy UI, Building Automation and HVAC Controllers.
Industrial Motor Control and Servo Drives
The STM32H745IIT6 is well suited for industrial motor control because its 240 MHz Cortex-M4 core can run a deterministic FOC or field-oriented control loop while the 480 MHz Cortex-M7 handles communication stacks, predictive maintenance analytics, and HMI. Two 12-bit ADCs sample phase currents at 5.3 MSPS each with simultaneous triggering, and the 16-bit ADC delivers 3.6 MSPS for DC-bus and resolver feedback. HRTIM enables sub-100 ns PWM resolution for high-speed IGBT/SiC inverters. Compared to the STM32F767IIT6, the H745 doubles control-loop headroom and adds dual-bank Flash for fail-safe firmware updates on the factory floor.
پیشنهادی
Audio DSP and Networked Audio Devices
The STM32H745IIT6 supports audio DSP applications by pairing an M7 running the audio CODEC at 480 MHz with an M4 handling Ethernet AVB or AES67 networking. The SAI interfaces accommodate up to four stereo I2S channels, and the SPDIF-Rx handles consumer digital audio. Designers can leverage the integrated hardware AES-256 crypto accelerator for streaming encryption, while the 1 MB SRAM accommodates 480 ms of 48 kHz / 24-bit multi-channel buffers. Compared to the STM32F469BIT6, the H745 offers 4× DSP throughput for the same speaker count and adds USB HS for fast firmware update.
پیشنهادی
Human-Machine Interface with TFT-LCD and Touch
The STM32H745IIT6 drives TFT-LCD HMI applications because the Cortex-M7 runs the LVGL or TouchGFX graphics stack while the Cortex-M4 manages sensor polling and CAN-FD communication. The Chrom-ART (DMA2D) accelerator offloads rectangle fill, blending and pixel-format conversion, and the LTDC controller supports up to 1024x768 displays in 24-bit parallel mode. Two OctoSPI interfaces enable fast PSRAM frame buffers up to 256 Mbit. Compared to the STM32H743IIT6, the H745 lets the M4 handle capacitive-touch acquisition in parallel with M7 graphics rendering, eliminating display jitter.
پیشنهادی
Industrial IoT Edge Gateways
The STM32H745IIT6 is ideal for industrial edge gateways because the M7 core runs Linux-equivalent RTOS + TLS stacks via the Ethernet MAC and USB HS, while the M4 manages real-time Modbus/IO-Link acquisition at deterministic intervals. Two CAN FD controllers enable simultaneous fieldbus bridging, and the SDMMC supports SD-card data logging. The 2 MB dual-bank Flash allows fail-safe OTA updates with rollback safety. Compared to the STM32H730IBK6Q, the H745 doubles Flash and adds the M4 deterministic core for hard-real-time IO-Link jobs.
پیشنهادی
EV Charging Stations and Smart Energy UI
The STM32H745IIT6 fits EV charging station controllers because the M7 core can drive a 7-inch TFT HMI for charge-status display while the M4 core executes the IEC 61851 state machine, ISO 15118 PLC stack, and OCPP backhaul. Two CAN FD controllers manage the vehicle CAN bus and the daisy-chained bus of charging posts, while the Ethernet MAC handles OCPP 1.6/2.0.1 JSON communication. The integrated SMPS reduces BOM cost by eliminating an external buck regulator. Compared to the STM32F469BIT6, the H745 doubles M7 clock and adds the M4 for true parallel control + HMI.
پیشنهادی
Building Automation and HVAC Controllers
The STM32H745IIT6 is well matched to building-automation controllers where the M4 core executes BACnet/Modbus real-time scheduling at 240 MHz while the M7 drives the LVGL UI and TLS-secured remote-management stack. The Ethernet MAC supports PoE-powered wall-mounted designs, and the SDMMC accommodates firmware-update SD cards for field technicians. The 2 MB dual-bank Flash eliminates external bootloaders. Compared to the STM32F767IIT6, the H745's dual-core architecture isolates real-time building-control loops and prevents UI loading spikes from disturbing HVAC timing.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای STM32H745IIT6 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | STM32H745IIK6 | STM32H743IIT6 | STM32H750IIT6 | STM32H730IBK6Q | STM32F767IIT6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 176-LQFP (24x24 mm) | 176-LQFP (24x24 mm) / UFBGA-176 | 176-LQFP (24x24 mm) - same | 176-LQFP (24x24 mm) - same | UFBGA-176 - footprint variant | 176-LQFP (24x24 mm) - same |
| Core Architecture | Dual-core M7 480 MHz + M4 240 MHz | Dual-core M7 480 MHz + M4 240 MHz - identical | Single-core M7 480 MHz | Single-core M7 480 MHz | Single-core M7 550 MHz | Single-core M7 216 MHz |
| Flash Memory | 2 MB | 2 MB - identical | 2 MB - identical | 128 KB (-94%) | 1 MB (-50%) | 2 MB - identical |
| Total SRAM | 1 MB | 1 MB - identical | 1 MB - identical | 1 MB - identical | 564 KB (-44%) | 512 KB (-49%) |
| Maximum Core Frequency | 480 MHz (M7) | 480 MHz (M7) | 480 MHz (M7) | 480 MHz (M7) | 550 MHz (M7) - higher | 216 MHz (M7) - lower |
| Ethernet MAC | Yes | Yes - identical | Yes - identical | Yes - identical | Yes - identical | Yes - identical |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C - identical | -40 °C to +85 °C - identical | -40 °C to +85 °C - identical | -40 °C to +85 °C - identical | -40 °C to +85 °C - identical |
تفاوت‌های کلیدی
- True dual-core architecture (در مقابلSTM32H743IIT6)
- Massive SRAM for buffering (در مقابلSTM32H730IBK6Q)
- Massive Flash for OTA (در مقابلSTM32H750IIT6)
یادداشت‌های طراحی
Use the integrated SMPS (VDD_SMPS pins) to generate the 1.0 V core rail. Place a 4.7 µF X5R 6.3 V ceramic on VDD_SMPSFB and a 100 nF X7R 0603 close to every VDD pin. Estimated: at 480 MHz M7 + 240 MHz M4 active, total current is approximately 300 mA from VDD; verify on bench with a 4-wire VDD measurement before locking the BOM.
Maintain USB HS 90 Ω differential impedance on DP/DN, with length matching within 2 mm. Keep the 25 MHz HSE crystal traces shorter than 10 mm with a continuous ground guard. Decoupling: 100 nF per VDD pin, 4.7 µF per VDD group, plus 1 µF on VDDA. Place ESR-safe ferrite beads on USB VBUS if powering from a 5 V LDO.
Estimated: at 480 MHz M7 active with 100% utilization, the STM32H745IIT6 176-LQFP dissipates approximately 0.8-1.2 W. The LQFP package has θJA ≈ 38 °C/W. Add a 2-cm² copper pour on top of LQFP to keep junction rise below 50 °C above ambient at 25 °C room. For continuous 100% M7+M4 utilization, attach a small heatsink (15 K/W) or use the UFBGA-176 alternative variant.
Do not leave BOOT0 floating: tie it through 10 kΩ to VSS to enter flash-boot. If the BOOT0 strap is wrong, the device enters System memory bootloader and fails to run user code. Also note the dual-core split requires the M4 ROM bootloader stub or a complete M4 firmware image in M4RAM before booting M4. Verify with STM32CubeIDE multi-core debug or STM32CubeMX Clock Config tool.
اطلاعات انطباق
RoHS and REACH compliant per STMicroelectronics material declaration. Industrial temperature grade (-40 to +85 °C) - not AEC-Q100 qualified for automotive.