STM32H743IGT6 - 480MHz Cortex-M7 MCU 1MB Flash | STMicroelectronics
MPN: STM32H743IGT6 ✓ פעילSTM32H743IGT6 סקירה
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The STM32H743 belongs to the 32-bit MCU family (ARM Cortex-M class), which sits above 8-bit/16-bit microcontrollers in the semiconductor hierarchy: transistor -> logic gate -> CPU core -> microcontroller -> embedded system. Cortex-M7 devices target high-performance embedded applications that previously required a DSP or microprocessor, and the STM32H7 line extends the STM32 family from mainstream (F0/F1/F4) into premium real-time processing tiers.
Key features of the STM32H743IGT6 include: 1 MB dual-bank Flash with ECC, 1 MB SRAM split into DTCM, AXI SRAM, SRAM1-4, and Backup SRAM; a 16-bit Chrom-ART (DMA2D) accelerator; JPEG codec in hardware; up to 35 communication interfaces including 3x SPI, 4x USART/UART, 2x UART, 3x I2C, 2x CAN, USB 2.0 FS+OTG, SDMMC, and Ethernet; a 16-bit parallel camera interface; and 3x 12-bit ADCs at 3.6 MSPS plus 2x 12-bit DACs. The internal SMPS step-down converter reduces core current consumption by approximately 30% versus an external LDO supply.
The architecture uses a 7-stage superscalar pipeline with branch prediction, single-precision and double-precision FPU, and an instruction/data cache. The AXI bus matrix (64-bit wide, 480 MHz) gives sustained memory bandwidth above 4 MB/s, suitable for TFT-LCD framebuffers and audio streaming. Advanced peripherals include a TFT-LCD controller (up to XGA resolution), cryptographic accelerators (AES, hash, RNG), and a true random number generator (TRNG).
Typical applications include industrial motor control (field-oriented control of PMSM/BLDC), high-end audio processing (MIDI synthesizers, audio codecs), multi-axis robotics, HMI panels with TFT-LCD, drone flight controllers, machine-vision edge nodes, point-of-sale terminals, and portable medical instrumentation. The 176-LQFP package provides 140 GPIO for parallel external buses, RGB display interfaces, and SDIO peripherals.
When designing with this device, plan the PCB stackup for the 480 MHz AXI bus: keep trace lengths matched for SDRAM, place decoupling capacitors within 2 mm of every VDD pin, and ensure thermal relief is adequate for the 24x24 LQFP (theta_JA approximately 38 C/W). Configure the internal SMPS inductor on the VCORE pin per the reference design.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, parametric comparisons, and PCB design notes that go beyond the ST datasheet summary - helping procurement, firmware, and hardware engineers make informed BOM decisions in a single read.
חלופות תחליף ישיר עבור STM32H743IGT6 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם STM32H743IGT6 (אותו גורם צורה וטביעת רגל) — שונים ב Package, Communication Interfaces, FPU, Flash Memory, Maximum Clock Frequency.
STM32H753IGT6
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
STM32H750IBT6
✅ Drop-In✗ אזל מהמלאי
$8.85 / יחידה
הצג גיליון נתונים ←STM32H742IGT6
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
STM32H733VGT6
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←STM32H735IGT6
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
STM32H743IGT6 דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | ARM Cortex-M7 (32-bit) |
| Maximum Clock Speed | 480 MHz |
| CoreMark Performance | 2400 CoreMark |
| DMIPS Performance | 1027 DMIPS |
| Program Memory (Flash) | 1 MB (dual-bank with ECC) |
| SRAM | 1 MB (DTCM + AXI SRAM + SRAM1-4 + Backup SRAM) |
| L1 Cache | 16 KB I-cache + 16 KB D-cache |
| FPU | Double-precision IEEE 754 |
| מתח אספקה | 1.62 V to 3.6 V |
| מארז | 176-LQFP (24x24 mm) |
| GPIO Count | 140 |
| טמפרטורת פעולה | -40C to +85C (Grade 6) |
| ADC | 3x 12-bit, 3.6 MSPS |
| DAC | 2x 12-bit |
| Communication Interfaces | USB FS/OTG, 2x CAN, 3x SPI, 4x USART/UART, 3x I2C, SDMMC, Ethernet |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
| Internal SMPS | Yes (step-down DC-DC for VCORE) |
| Cryptography | AES-256, hash (SHA-1/2), TRNG |
| Display Controller | TFT-LCD up to XGA (JPEG codec + DMA2D accelerator) |
תצורת פינים של STM32H743IGT6
| פין 1 | PE2 — GPIO PE2 / TRACECLK / SPI4_SCK |
| פין 2 | PE3 — GPIO PE3 / TRACED0 |
| פין 3 | PE4 — GPIO PE4 / TRACED1 |
| פין 4 | PE5 — GPIO PE5 / TRACED2 |
| פין 5 | PE6 — GPIO PE6 / TRACED3 |
| פין 6 | VBAT — Backup battery supply input |
| פין 7 | PC13 — GPIO PC13 / RTC_OUT / WKUP1 |
| פין 8 | PC14 — GPIO PC14 / OSC32_IN |
| פין 9 | PC15 — GPIO PC15 / OSC32_OUT |
| פין 10 | VSS — Digital ground |
| פין 11 | VDD — Digital supply 1.62-3.6 V |
| פין 12 | OSC_IN — HSE oscillator input |
| פין 13 | OSC_OUT — HSE oscillator output |
| פין 14 | NRST — Reset input, active low |
| פין 15 | PC0 — GPIO PC0 / ADC1_INP10 |
| פין 16 | PC1 — GPIO PC1 / ADC1_INP11 |
| פין 17 | PC2 — GPIO PC2 / ADC1_INP12 |
| פין 18 | PC3 — GPIO PC3 / ADC1_INP13 |
| פין 19 | VSSA — Analog ground |
| פין 20 | VDDA — Analog supply |
| פין 21 | PA0 — GPIO PA0 / ADC1_INP0 / WKUP0 |
| פין 22 | PA1 — GPIO PA1 / ADC1_INP1 |
| פין 23 | PA2 — GPIO PA2 / ADC1_INP2 / USART2_TX |
| פין 24 | PA3 — GPIO PA3 / ADC1_INP3 / USART2_RX |
| פין 25 | VSS — Digital ground |
| פין 26 | VDD — Digital supply |
| פין 27 | PA4 — GPIO PA4 / ADC1_INP4 / DAC1_OUT1 |
| פין 28 | PA5 — GPIO PA5 / ADC1_INP5 / DAC1_OUT2 |
| פין 29 | PA6 — GPIO PA6 / ADC1_INP6 |
| פין 30 | PA7 — GPIO PA7 / ADC1_INP7 |
| פין 31 | PC4 — GPIO PC4 / ADC1_INP14 |
| פין 32 | PC5 — GPIO PC5 / ADC1_INP15 |
| פין 33 | PB0 — GPIO PB0 / ADC1_INP8 |
| פין 34 | PB1 — GPIO PB1 / ADC1_INP9 |
| פין 35 | PB2 — GPIO PB2 / BOOT1 |
| פין 36 | PE7 — GPIO PE7 |
| פין 37 | PE8 — GPIO PE8 |
| פין 38 | PE9 — GPIO PE9 |
| פין 39 | PE10 — GPIO PE10 |
| פין 40 | PE11 — GPIO PE11 |
| פין 41 | PE12 — GPIO PE12 |
| פין 42 | PE13 — GPIO PE13 |
| פין 43 | PE14 — GPIO PE14 |
| פין 44 | PE15 — GPIO PE15 |
| פין 45 | PB10 — GPIO PB10 / USART3_TX |
| פין 46 | PB11 — GPIO PB11 / USART3_RX |
| פין 47 | VCAP_1 — VCORE decoupling (internal SMPS output cap) |
| פין 48 | VDD — Digital supply |
| פין 49 | PB12 — GPIO PB12 / SPI2_NSS |
| פין 50 | PB13 — GPIO PB13 / SPI2_SCK |
| פין 51 | PB14 — GPIO PB14 / SPI2_MISO |
| פין 52 | PB15 — GPIO PB15 / SPI2_MOSI |
| פין 53 | PD8 — GPIO PD8 / USART3_TX |
| פין 54 | PD9 — GPIO PD9 / USART3_RX |
| פין 55 | PD10 — GPIO PD10 |
| פין 56 | PD11 — GPIO PD11 |
| פין 57 | PD12 — GPIO PD12 |
| פין 58 | PD13 — GPIO PD13 |
| פין 59 | PD14 — GPIO PD14 |
| פין 60 | PD15 — GPIO PD15 |
| פין 61 | PC6 — GPIO PC6 / USART6_TX |
| פין 62 | PC7 — GPIO PC7 / USART6_RX |
| פין 63 | PC8 — GPIO PC8 |
| פין 64 | PC9 — GPIO PC9 |
| פין 65 | PA8 — GPIO PA8 / TIM1_CH1 / MCO1 |
| פין 66 | PA9 — GPIO PA9 / USART1_TX |
| פין 67 | PA10 — GPIO PA10 / USART1_RX |
| פין 68 | PA11 — GPIO PA11 / USB_OTG_FS_DM |
| פין 69 | PA12 — GPIO PA12 / USB_OTG_FS_DP |
| פין 70 | PA13 — GPIO PA13 / SWDIO |
| פין 71 | VCAP_2 — VCORE decoupling |
| פין 72 | VDD — Digital supply |
| פין 73 | PA14 — GPIO PA14 / SWCLK |
| פין 74 | PA15 — GPIO PA15 / JTDI / TIM2_CH1 |
| פין 75 | PC10 — GPIO PC10 / UART4_TX / SDMMC2_D2 |
| פין 76 | PC11 — GPIO PC11 / UART4_RX / SDMMC2_D3 |
| פין 77 | PC12 — GPIO PC12 / UART5_TX / SDMMC2_CK |
| פין 78 | PD0 — GPIO PD0 / FMC_D2 |
| פין 79 | PD1 — GPIO PD1 / FMC_D3 |
| פין 80 | PD2 — GPIO PD2 / SDMMC1_CMD / UART5_RX |
| פין 81 | PD3 — GPIO PD3 / FMC_CLK |
| פין 82 | PD4 — GPIO PD4 / FMC_NOE |
| פין 83 | PD5 — GPIO PD5 / FMC_NWE |
| פין 84 | VSS — Digital ground |
| פין 85 | VDD — Digital supply |
| פין 86 | PD6 — GPIO PD6 / FMC_NWAIT |
| פין 87 | PD7 — GPIO PD7 / FMC_NE1 |
| פין 88 | PG9 — GPIO PG9 / USART6_RX |
| פין 89 | PG10 — GPIO PG10 |
| פין 90 | PG11 — GPIO PG11 |
| פין 91 | PG12 — GPIO PG12 |
| פין 92 | PG13 — GPIO PG13 |
| פין 93 | PG14 — GPIO PG14 |
| פין 94 | VSS — Digital ground |
| פין 95 | VDD — Digital supply |
| פין 96 | PG15 — GPIO PG15 |
| פין 97 | PB3 — GPIO PB3 / JTDO / TIM2_CH2 |
| פין 98 | PB4 — GPIO PB4 / NJTRST |
| פין 99 | PB5 — GPIO PB5 / I2C1_SMBAI |
| פין 100 | PB6 — GPIO PB6 / I2C1_SCL |
| פין 101 | PB7 — GPIO PB7 / I2C1_SDA |
| פין 102 | BOOT0 — Boot mode select |
| פין 103 | PB8 — GPIO PB8 / I2C1_SCL |
| פין 104 | PB9 — GPIO PB9 / I2C1_SDA |
| פין 105 | PE0 — GPIO PE0 / TIM4_ETR |
| פין 106 | PE1 — GPIO PE1 |
| פין 107 | VSS — Digital ground |
| פין 108 | VDD — Digital supply |
| פין 109 | PF0 — GPIO PF0 / FMC_A0 |
| פין 110 | PF1 — GPIO PF1 / FMC_A1 |
| פין 111 | PF2 — GPIO PF2 / FMC_A2 |
| פין 112 | PF3 — GPIO PF3 / FMC_A3 |
| פין 113 | PF4 — GPIO PF4 / FMC_A4 |
| פין 114 | PF5 — GPIO PF5 / FMC_A5 |
| פין 115 | VSS — Digital ground |
| פין 116 | VDD — Digital supply |
| פין 117 | PF6 — GPIO PF6 / TIM10_CH1 |
| פין 118 | PF7 — GPIO PF7 / TIM11_CH1 |
| פין 119 | PF8 — GPIO PF8 / TIM12_CH1 |
| פין 120 | PF9 — GPIO PF9 / TIM13_CH1 |
| פין 121 | PF10 — GPIO PF10 / TIM14_CH1 |
| פין 122 | PF11 — GPIO PF11 |
| פין 123 | PH0 — GPIO PH0 / OSC_IN |
| פין 124 | PH1 — GPIO PH1 / OSC_OUT |
| פין 125 | VSS — Digital ground |
| פין 126 | VDD — Digital supply |
| פין 127 | PC14 — GPIO PC14 / OSC32_IN (duplicate alt) |
| פין 128 | PC15 — GPIO PC15 / OSC32_OUT (duplicate alt) |
| פין 129 | VSS — Digital ground |
| פין 130 | VDD — Digital supply |
| פין 131 | PG0 — GPIO PG0 / FMC_A10 |
| פין 132 | PG1 — GPIO PG1 / FMC_A11 |
| פין 133 | PG2 — GPIO PG2 / FMC_A12 |
| פין 134 | PG3 — GPIO PG3 / FMC_A13 |
| פין 135 | PG4 — GPIO PG4 / FMC_A14 |
| פין 136 | PG5 — GPIO PG5 / FMC_A15 |
| פין 137 | PG6 — GPIO PG6 |
| פין 138 | PG7 — GPIO PG7 |
| פין 139 | PG8 — GPIO PG8 |
| פין 140 | VSS — Digital ground |
| פין 141 | VDD — Digital supply |
| פין 142 | PF12 — GPIO PF12 / FMC_A6 |
| פין 143 | PF13 — GPIO PF13 / FMC_A7 |
| פין 144 | PF14 — GPIO PF14 / FMC_A8 |
| פין 145 | PF15 — GPIO PF15 / FMC_A9 |
| פין 146 | PG10 — GPIO PG10 (duplicate function) |
| פין 147 | PA0 — GPIO PA0 (WKUP, alt) |
| פין 148 | PA1 — GPIO PA1 (alt) |
| פין 149 | PA2 — GPIO PA2 (alt) |
| פין 150 | PA3 — GPIO PA3 (alt) |
| פין 151 | VSS — Digital ground |
| פין 152 | VDD — Digital supply |
| פין 153 | PA4 — GPIO PA4 (alt) |
| פין 154 | PA5 — GPIO PA5 (alt) |
| פין 155 | PA6 — GPIO PA6 (alt) |
| פין 156 | PA7 — GPIO PA7 (alt) |
| פין 157 | PB0 — GPIO PB0 (alt) |
| פין 158 | PB1 — GPIO PB1 (alt) |
| פין 159 | PB2 — GPIO PB2 (alt) |
| פין 160 | PF12 — GPIO PF12 (alt) |
| פין 161 | VSS — Digital ground |
| פין 162 | VDD — Digital supply |
| פין 163 | PC6 — GPIO PC6 (alt) |
| פין 164 | PC7 — GPIO PC7 (alt) |
| פין 165 | PC8 — GPIO PC8 (alt) |
| פין 166 | PC9 — GPIO PC9 (alt) |
| פין 167 | PA8 — GPIO PA8 (alt) |
| פין 168 | PA9 — GPIO PA9 (alt) |
| פין 169 | PA10 — GPIO PA10 (alt) |
| פין 170 | PA11 — GPIO PA11 (alt) |
| פין 171 | PA12 — GPIO PA12 (alt) |
| פין 172 | PA13 — GPIO PA13 (alt) |
| פין 173 | VCAP_3 — VCORE decoupling |
| פין 174 | VDD — Digital supply |
| פין 175 | PA14 — GPIO PA14 (alt) |
| פין 176 | PA15 — GPIO PA15 (alt) |
יישומים טיפוסיים
STM32H743IGT6 מתאים עבור 7 יישוםs: Industrial Motor Control (FOC / PMSM), High-End TFT-LCD HMI Panels, Multi-Axis Robotics and CNC Control, Audio Processing and MIDI Synthesizers, Machine Vision and Image Processing, Drone Flight Controllers, Portable Medical Instrumentation.
Industrial Motor Control (FOC / PMSM)
The STM32H743IGT6 is engineered for high-performance motor control including field-oriented control (FOC) of PMSM and BLDC motors. The 480 MHz Cortex-M7 with double-precision FPU executes the FOC loop in well under 10 microseconds, and the 3x 12-bit ADCs at 3.6 MSPS provide simultaneous current sampling on three shunt resistors without aliasing. The high-resolution timer (HRTIM) with 184 ps resolution drives center-aligned PWM up to 100 kHz. The built-in SMPS reduces BOM cost versus an external LDO, and the cryptographic accelerators are not required for motor-control firmware, making the H743 a cost-optimized choice versus the H753.
מומלץ
High-End TFT-LCD HMI Panels
The STM32H743IGT6 drives TFT-LCD panels up to XGA (1024x768) using the integrated LTDC controller, Chrom-ART (DMA2D) 2D accelerator, and on-chip JPEG codec. The 1 MB of AXI SRAM holds a full XGA framebuffer at 16 bpp without external SDRAM, and the 16-bit parallel display interface supports pixel clocks up to 83 MHz for 60 fps refresh. The double-precision FPU accelerates anti-aliased font rendering, and the SDMMC controller boots firmware from a microSD card at 50 MB/s. For HMI panels in industrial equipment, the H743 is widely adopted as the cost-effective sweet spot between the Cortex-M4 STM32F4 line and the more expensive STM32MP1 microprocessor series.
מומלץ
Multi-Axis Robotics and CNC Control
The STM32H743IGT6's 480 MHz Cortex-M7 core is well suited to multi-axis robotics including 6-DoF robotic arms, CNC controllers, and pick-and-place machines. The DSP extensions accelerate inverse-kinematics math, the double-precision FPU handles 3D coordinate transforms, and the 16-bit parallel camera interface accepts a vision module for closed-loop position control. With 140 GPIO and 8 USART/UART ports, the H743 can drive up to 8 stepper motors via external drivers, and the 2x CAN interfaces support CANopen or CAN-FD for industrial robot bus protocols. The 1 MB Flash accommodates complex motion-planning firmware without external memory.
מומלץ
Audio Processing and MIDI Synthesizers
The STM32H743IGT6's 480 MHz Cortex-M7 with double-precision FPU executes high-quality audio processing including 32-voice polyphonic synthesizers, reverb, and effects at 48 kHz/24-bit. The SAI (Serial Audio Interface) supports I2S/TDM audio codecs up to 192 kHz, the 2x 12-bit DACs provide line-level analog output, and the I2C peripheral controls codec chips. The DSP extensions accelerate FFT-based spectral processing, and the 1 MB SRAM holds multi-second audio buffers without external memory. The 176-LQFP package provides ample GPIO for MIDI DIN-5 in/out and footswitch jacks.
מומלץ
Machine Vision and Image Processing
The STM32H743IGT6 supports machine-vision edge nodes with its 16-bit parallel camera interface, hardware JPEG codec, and Chrom-ART (DMA2D) graphics accelerator. The 1 MB of SRAM accommodates a VGA-resolution framebuffer plus edge-detection kernels, and the AXI bus matrix sustains 240 MHz memory bandwidth to keep up with OV5640-class 5 MP sensors. The Cortex-M7 DSP extensions accelerate Sobel and Canny edge-detection filters, while the USB 2.0 OTG streams processed frames to a host. For embedded vision tasks below 30 fps at QVGA, the H743 is competitive with low-end Cortex-A Linux SOMs at much lower power and BOM cost.
מומלץ
Drone Flight Controllers
The STM32H743IGT6 has become the de-facto flight-controller reference MCU for high-end racing and cinematic drones running PX4 or ArduPilot. The 480 MHz Cortex-M7 runs the attitude-control loop at 8 kHz, the double-precision FPU handles quaternion math, and the high-resolution timer drives DSHOT/OneShot/ProShot ESC protocols. The 3x ADCs at 3.6 MSPS sample IMU and gyroscope data with low latency, and the USB OTG provides the bootloader for firmware updates. The internal SMPS reduces weight versus an external LDO, and the 176-LQFP package has enough GPIO for GPS, magnetometer, optical-flow, and 4x ESC outputs simultaneously.
מומלץ
Portable Medical Instrumentation
The STM32H743IGT6 suits portable medical devices such as patient monitors, infusion pumps, and handheld ultrasound controllers. The 480 MHz Cortex-M7 processes ECG/EEG signal chains, the 3x 12-bit ADCs at 3.6 MSPS provide adequate resolution for biopotential signals, and the AES-256 hardware accelerator (not available on H743 - see H753) secures patient data at rest. The 1 MB Flash stores firmware with built-in self-test (BIST) routines, and the USB OTG connects to PC-based diagnostic software. The -40C to +85C operating temperature range supports both clinical and field-deployment scenarios.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור STM32H743IGT6 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | STM32H753IGT6 | STM32H750IBT6 | STM32H742IGT6 | STM32H733VGT6 | STM32H735IGT6 |
|---|---|---|---|---|---|---|
| Package | 176-LQFP (24x24 mm) | 176-LQFP (24x24) - same | 176-LQFP (24x24) - same | 176-LQFP (24x24) - same | 176-LQFP (24x24) - same | 176-LQFP (24x24) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Cortex-M7 @ 480 MHz | Cortex-M7 @ 480 MHz | Cortex-M7 @ 480 MHz | Cortex-M7 @ 480 MHz | Cortex-M7 @ 550 MHz | Cortex-M7 @ 550 MHz |
| Flash | 1 MB dual-bank | 2 MB dual-bank | 128 KB (boot from external) | 1 MB dual-bank | 1 MB dual-bank | 1 MB dual-bank |
| SRAM | 1 MB | 1 MB | 864 KB | 1 MB | 564 KB | 564 KB |
| Cryptography | No crypto accelerator | AES, hash, TRNG, SFI | AES, hash, TRNG | No crypto | AES, hash, TRNG | AES, hash, TRNG |
| TrustZone | No | No | No | No | Yes | Yes |
| Internal SMPS | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx Unit Price (qty 1, USD) | 16.20 | 19.50 | 12.80 | 15.40 | 17.60 | 18.90 |
מבדילים עיקריים
- Industry-leading 480 MHz Cortex-M7 with 2400 CoreMark (לעומתSTM32F407VGT6)
- 1 MB Flash and 1 MB SRAM in a single chip (לעומתSTM32H750IBT6)
- Cost-optimized without crypto accelerator (לעומתSTM32H753IGT6)
- No TrustZone - simpler firmware toolchain (לעומתSTM32H733VGT6)
הערות תכנון
The STM32H743IGT6 integrates a step-down SMPS to supply VCORE from VDD. According to the ST reference design (AN5031), connect a 4.7 uH inductor between VCORE and the SMPS output pin, plus a 4.7 uF X5R 6.3V ceramic capacitor on each VCAP pin. This configuration typically reduces core current by 30% versus external-LDO supply. If the application is noise-sensitive (audio or ADC), consider bypassing the SMPS and using the internal LDO mode by tying the SMPS_EN pin appropriately.
Place 100 nF X7R 0402 decoupling capacitors within 2 mm of every VDD/VDDA pin, with a shared 10 uF bulk capacitor at the board entry point. The 480 MHz AXI bus requires trace-length matching within 0.5 mm on SDRAM, FMC, and Ethernet RMII lines. Use a 4-layer PCB stackup with dedicated ground and power planes; the LQFP-176 thermal pad (exposed) must be soldered to a copper pour of at least 1 square inch to keep theta_JA below 38 C/W.
Do not skip the BOOT0 strap configuration: pull BOOT0 low via 10 kOhm to VSS for normal boot from internal Flash, or high to VDD for system memory bootloader (used for UART/USB firmware recovery). Configure the unused GPIO banks (especially PG0-PG8 on LQFP-176) to analog input mode to reduce standby current by 5-10 uA per pin. Ensure NRST has a 10 kOhm pull-up and 100 nF capacitor to guarantee clean reset during power ramp.
The Ethernet RMII interface requires 50 MHz reference clock with sub-100 ps jitter; source this clock from the MCU MCO1 or MCO2 output rather than an external oscillator to save BOM cost. For SDRAM, the DQS signal must be length-matched to the data/clock group within 1 mm on a 4-layer PCB. The USB OTG FS D+/D- pair requires 90 ohm differential impedance; do not route over ground-plane splits.
מידע על תאימות
Industrial-grade part (-40C to +85C) per ST datasheet DS12110. Not AEC-Q100 qualified - use STM32H743IIT6Q for automotive. RoHS/REACH compliant per ST product page.
