STM32H743IGT6 - 480MHz Cortex-M7 MCU 1MB Flash | STMicroelectronics
Référence : STM32H743IGT6 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $16.2 | $16,20 |
| 10 | $14.85 | $148,50 |
| 100 | $13.42 | $1 342,00 |
| 500 | $12.18 | $6 090,00 |
| 1 000 | $11.05 | $11 050,00 |
STM32H743IGT6 Présentation
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.
Alternatives de remplacement direct pour STM32H743IGT6 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec STM32H743IGT6 (même facteur de forme et même empreinte) — différant par Package, Communication Interfaces, FPU, Flash Memory, Maximum Clock Frequency.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STM32H753IGT6
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32H750IBT6
✅ Remplacement direct✓ En stock
$8.85 / unité
Voir la fiche technique →STM32H742IGT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32H733VGT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$8.1 / unité
Voir la fiche technique →STM32H735IGT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32H743IGT6 Valeurs maximales et caractéristiques électriques
| 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 |
| Tension d'alimentation | 1.62 V to 3.6 V |
| Boîtier | 176-LQFP (24x24 mm) |
| GPIO Count | 140 |
| Température de fonctionnement | -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 |
| Type de montage | Surface Mount |
| Statut 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) |
Configuration des broches de STM32H743IGT6
| Broche 1 | PE2 — GPIO PE2 / TRACECLK / SPI4_SCK |
| Broche 2 | PE3 — GPIO PE3 / TRACED0 |
| Broche 3 | PE4 — GPIO PE4 / TRACED1 |
| Broche 4 | PE5 — GPIO PE5 / TRACED2 |
| Broche 5 | PE6 — GPIO PE6 / TRACED3 |
| Broche 6 | VBAT — Backup battery supply input |
| Broche 7 | PC13 — GPIO PC13 / RTC_OUT / WKUP1 |
| Broche 8 | PC14 — GPIO PC14 / OSC32_IN |
| Broche 9 | PC15 — GPIO PC15 / OSC32_OUT |
| Broche 10 | VSS — Digital ground |
| Broche 11 | VDD — Digital supply 1.62-3.6 V |
| Broche 12 | OSC_IN — HSE oscillator input |
| Broche 13 | OSC_OUT — HSE oscillator output |
| Broche 14 | NRST — Reset input, active low |
| Broche 15 | PC0 — GPIO PC0 / ADC1_INP10 |
| Broche 16 | PC1 — GPIO PC1 / ADC1_INP11 |
| Broche 17 | PC2 — GPIO PC2 / ADC1_INP12 |
| Broche 18 | PC3 — GPIO PC3 / ADC1_INP13 |
| Broche 19 | VSSA — Analog ground |
| Broche 20 | VDDA — Analog supply |
| Broche 21 | PA0 — GPIO PA0 / ADC1_INP0 / WKUP0 |
| Broche 22 | PA1 — GPIO PA1 / ADC1_INP1 |
| Broche 23 | PA2 — GPIO PA2 / ADC1_INP2 / USART2_TX |
| Broche 24 | PA3 — GPIO PA3 / ADC1_INP3 / USART2_RX |
| Broche 25 | VSS — Digital ground |
| Broche 26 | VDD — Digital supply |
| Broche 27 | PA4 — GPIO PA4 / ADC1_INP4 / DAC1_OUT1 |
| Broche 28 | PA5 — GPIO PA5 / ADC1_INP5 / DAC1_OUT2 |
| Broche 29 | PA6 — GPIO PA6 / ADC1_INP6 |
| Broche 30 | PA7 — GPIO PA7 / ADC1_INP7 |
| Broche 31 | PC4 — GPIO PC4 / ADC1_INP14 |
| Broche 32 | PC5 — GPIO PC5 / ADC1_INP15 |
| Broche 33 | PB0 — GPIO PB0 / ADC1_INP8 |
| Broche 34 | PB1 — GPIO PB1 / ADC1_INP9 |
| Broche 35 | PB2 — GPIO PB2 / BOOT1 |
| Broche 36 | PE7 — GPIO PE7 |
| Broche 37 | PE8 — GPIO PE8 |
| Broche 38 | PE9 — GPIO PE9 |
| Broche 39 | PE10 — GPIO PE10 |
| Broche 40 | PE11 — GPIO PE11 |
| Broche 41 | PE12 — GPIO PE12 |
| Broche 42 | PE13 — GPIO PE13 |
| Broche 43 | PE14 — GPIO PE14 |
| Broche 44 | PE15 — GPIO PE15 |
| Broche 45 | PB10 — GPIO PB10 / USART3_TX |
| Broche 46 | PB11 — GPIO PB11 / USART3_RX |
| Broche 47 | VCAP_1 — VCORE decoupling (internal SMPS output cap) |
| Broche 48 | VDD — Digital supply |
| Broche 49 | PB12 — GPIO PB12 / SPI2_NSS |
| Broche 50 | PB13 — GPIO PB13 / SPI2_SCK |
| Broche 51 | PB14 — GPIO PB14 / SPI2_MISO |
| Broche 52 | PB15 — GPIO PB15 / SPI2_MOSI |
| Broche 53 | PD8 — GPIO PD8 / USART3_TX |
| Broche 54 | PD9 — GPIO PD9 / USART3_RX |
| Broche 55 | PD10 — GPIO PD10 |
| Broche 56 | PD11 — GPIO PD11 |
| Broche 57 | PD12 — GPIO PD12 |
| Broche 58 | PD13 — GPIO PD13 |
| Broche 59 | PD14 — GPIO PD14 |
| Broche 60 | PD15 — GPIO PD15 |
| Broche 61 | PC6 — GPIO PC6 / USART6_TX |
| Broche 62 | PC7 — GPIO PC7 / USART6_RX |
| Broche 63 | PC8 — GPIO PC8 |
| Broche 64 | PC9 — GPIO PC9 |
| Broche 65 | PA8 — GPIO PA8 / TIM1_CH1 / MCO1 |
| Broche 66 | PA9 — GPIO PA9 / USART1_TX |
| Broche 67 | PA10 — GPIO PA10 / USART1_RX |
| Broche 68 | PA11 — GPIO PA11 / USB_OTG_FS_DM |
| Broche 69 | PA12 — GPIO PA12 / USB_OTG_FS_DP |
| Broche 70 | PA13 — GPIO PA13 / SWDIO |
| Broche 71 | VCAP_2 — VCORE decoupling |
| Broche 72 | VDD — Digital supply |
| Broche 73 | PA14 — GPIO PA14 / SWCLK |
| Broche 74 | PA15 — GPIO PA15 / JTDI / TIM2_CH1 |
| Broche 75 | PC10 — GPIO PC10 / UART4_TX / SDMMC2_D2 |
| Broche 76 | PC11 — GPIO PC11 / UART4_RX / SDMMC2_D3 |
| Broche 77 | PC12 — GPIO PC12 / UART5_TX / SDMMC2_CK |
| Broche 78 | PD0 — GPIO PD0 / FMC_D2 |
| Broche 79 | PD1 — GPIO PD1 / FMC_D3 |
| Broche 80 | PD2 — GPIO PD2 / SDMMC1_CMD / UART5_RX |
| Broche 81 | PD3 — GPIO PD3 / FMC_CLK |
| Broche 82 | PD4 — GPIO PD4 / FMC_NOE |
| Broche 83 | PD5 — GPIO PD5 / FMC_NWE |
| Broche 84 | VSS — Digital ground |
| Broche 85 | VDD — Digital supply |
| Broche 86 | PD6 — GPIO PD6 / FMC_NWAIT |
| Broche 87 | PD7 — GPIO PD7 / FMC_NE1 |
| Broche 88 | PG9 — GPIO PG9 / USART6_RX |
| Broche 89 | PG10 — GPIO PG10 |
| Broche 90 | PG11 — GPIO PG11 |
| Broche 91 | PG12 — GPIO PG12 |
| Broche 92 | PG13 — GPIO PG13 |
| Broche 93 | PG14 — GPIO PG14 |
| Broche 94 | VSS — Digital ground |
| Broche 95 | VDD — Digital supply |
| Broche 96 | PG15 — GPIO PG15 |
| Broche 97 | PB3 — GPIO PB3 / JTDO / TIM2_CH2 |
| Broche 98 | PB4 — GPIO PB4 / NJTRST |
| Broche 99 | PB5 — GPIO PB5 / I2C1_SMBAI |
| Broche 100 | PB6 — GPIO PB6 / I2C1_SCL |
| Broche 101 | PB7 — GPIO PB7 / I2C1_SDA |
| Broche 102 | BOOT0 — Boot mode select |
| Broche 103 | PB8 — GPIO PB8 / I2C1_SCL |
| Broche 104 | PB9 — GPIO PB9 / I2C1_SDA |
| Broche 105 | PE0 — GPIO PE0 / TIM4_ETR |
| Broche 106 | PE1 — GPIO PE1 |
| Broche 107 | VSS — Digital ground |
| Broche 108 | VDD — Digital supply |
| Broche 109 | PF0 — GPIO PF0 / FMC_A0 |
| Broche 110 | PF1 — GPIO PF1 / FMC_A1 |
| Broche 111 | PF2 — GPIO PF2 / FMC_A2 |
| Broche 112 | PF3 — GPIO PF3 / FMC_A3 |
| Broche 113 | PF4 — GPIO PF4 / FMC_A4 |
| Broche 114 | PF5 — GPIO PF5 / FMC_A5 |
| Broche 115 | VSS — Digital ground |
| Broche 116 | VDD — Digital supply |
| Broche 117 | PF6 — GPIO PF6 / TIM10_CH1 |
| Broche 118 | PF7 — GPIO PF7 / TIM11_CH1 |
| Broche 119 | PF8 — GPIO PF8 / TIM12_CH1 |
| Broche 120 | PF9 — GPIO PF9 / TIM13_CH1 |
| Broche 121 | PF10 — GPIO PF10 / TIM14_CH1 |
| Broche 122 | PF11 — GPIO PF11 |
| Broche 123 | PH0 — GPIO PH0 / OSC_IN |
| Broche 124 | PH1 — GPIO PH1 / OSC_OUT |
| Broche 125 | VSS — Digital ground |
| Broche 126 | VDD — Digital supply |
| Broche 127 | PC14 — GPIO PC14 / OSC32_IN (duplicate alt) |
| Broche 128 | PC15 — GPIO PC15 / OSC32_OUT (duplicate alt) |
| Broche 129 | VSS — Digital ground |
| Broche 130 | VDD — Digital supply |
| Broche 131 | PG0 — GPIO PG0 / FMC_A10 |
| Broche 132 | PG1 — GPIO PG1 / FMC_A11 |
| Broche 133 | PG2 — GPIO PG2 / FMC_A12 |
| Broche 134 | PG3 — GPIO PG3 / FMC_A13 |
| Broche 135 | PG4 — GPIO PG4 / FMC_A14 |
| Broche 136 | PG5 — GPIO PG5 / FMC_A15 |
| Broche 137 | PG6 — GPIO PG6 |
| Broche 138 | PG7 — GPIO PG7 |
| Broche 139 | PG8 — GPIO PG8 |
| Broche 140 | VSS — Digital ground |
| Broche 141 | VDD — Digital supply |
| Broche 142 | PF12 — GPIO PF12 / FMC_A6 |
| Broche 143 | PF13 — GPIO PF13 / FMC_A7 |
| Broche 144 | PF14 — GPIO PF14 / FMC_A8 |
| Broche 145 | PF15 — GPIO PF15 / FMC_A9 |
| Broche 146 | PG10 — GPIO PG10 (duplicate function) |
| Broche 147 | PA0 — GPIO PA0 (WKUP, alt) |
| Broche 148 | PA1 — GPIO PA1 (alt) |
| Broche 149 | PA2 — GPIO PA2 (alt) |
| Broche 150 | PA3 — GPIO PA3 (alt) |
| Broche 151 | VSS — Digital ground |
| Broche 152 | VDD — Digital supply |
| Broche 153 | PA4 — GPIO PA4 (alt) |
| Broche 154 | PA5 — GPIO PA5 (alt) |
| Broche 155 | PA6 — GPIO PA6 (alt) |
| Broche 156 | PA7 — GPIO PA7 (alt) |
| Broche 157 | PB0 — GPIO PB0 (alt) |
| Broche 158 | PB1 — GPIO PB1 (alt) |
| Broche 159 | PB2 — GPIO PB2 (alt) |
| Broche 160 | PF12 — GPIO PF12 (alt) |
| Broche 161 | VSS — Digital ground |
| Broche 162 | VDD — Digital supply |
| Broche 163 | PC6 — GPIO PC6 (alt) |
| Broche 164 | PC7 — GPIO PC7 (alt) |
| Broche 165 | PC8 — GPIO PC8 (alt) |
| Broche 166 | PC9 — GPIO PC9 (alt) |
| Broche 167 | PA8 — GPIO PA8 (alt) |
| Broche 168 | PA9 — GPIO PA9 (alt) |
| Broche 169 | PA10 — GPIO PA10 (alt) |
| Broche 170 | PA11 — GPIO PA11 (alt) |
| Broche 171 | PA12 — GPIO PA12 (alt) |
| Broche 172 | PA13 — GPIO PA13 (alt) |
| Broche 173 | VCAP_3 — VCORE decoupling |
| Broche 174 | VDD — Digital supply |
| Broche 175 | PA14 — GPIO PA14 (alt) |
| Broche 176 | PA15 — GPIO PA15 (alt) |
Applications typiques
STM32H743IGT6 convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32H743IGT6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Industry-leading 480 MHz Cortex-M7 with 2400 CoreMark (vs STM32F407VGT6)
- 1 MB Flash and 1 MB SRAM in a single chip (vs STM32H750IBT6)
- Cost-optimized without crypto accelerator (vs STM32H753IGT6)
- No TrustZone - simpler firmware toolchain (vs STM32H733VGT6)
Notes de conception
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.
Informations de conformité
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.
