STM32H7A3ZIT6Q - Cortex-M7 MCU 280MHz 2MB Flash | STMicroelectronics
MPN: STM32H7A3ZIT6Q ✓ نشطSTM32H7A3ZIT6Q نظرة عامة
What is an ARM Cortex-M7 microcontroller? It is a 32-bit RISC processor core designed by Arm for embedded real-time workloads. The Cortex-M7 superset within the Cortex-M family introduces a six-stage superscalar pipeline, dual-issue capability, single/double-precision FPU, DSP extensions, and an instruction cache (I-cache) plus data cache (D-cache) with optional TCM (Tightly Coupled Memory) interfaces. In the broader taxonomy it sits above Cortex-M4 (no cache, no dual-issue) and below Cortex-A application processors, occupying the high-performance MCU tier.
Key features of the STM32H7A3ZIT6Q include the Cortex-M7 core with double-precision FPU and L1 cache (16 KB I-cache + 16 KB D-cache), Chrom-ART graphics accelerator for TFT-LCD pipelines, up to 1.4 MB contiguous SRAM with multiple block options, two 16-bit ADCs (up to 3.6 MSPS), two 12-bit DACs, multiple U(S)ART/SPI/I2C/FDCAN/USB interfaces, SDMMC, Ethernet MAC, and a JTAG/SWD debug interface. The device integrates a 32-bit timer, 16-bit timers, and an HRTIM high-resolution timer for power-conversion control.
Architecturally, the H7A3 line leverages ST's 40 nm embedded-Flash process, with bus-matrix decoupling of code (TCM), main SRAM, and peripherals for deterministic interrupt latency. The dual-bank Flash supports read-while-write, allowing firmware updates without halting execution. Cryptography acceleration (AES, SHA, RNG) is included for secure-boot and TLS workloads.
Typical applications include industrial motor control (field-oriented control of PMSM and induction motors via HRTIM), HMI panels with TFT-LCD rendered through Chrom-ART, building-automation controllers, solar inverters, EV charging station control boards, and audio DSP front-ends. The wide temperature range and AEC-Q100 grade extend fit to chassis ECUs and body controllers.
Design consideration: at 280 MHz the device dissipates roughly 250-400 mW depending on peripheral activity; a four-layer PCB with a continuous ground plane beneath the LQFP exposed pad is recommended to keep junction temperature within the 125 C industrial limit. Use ST's STM32CubeMX to generate pin-multiplexing tables and the HAL/LOWER-LAYER driver scaffolding.
This page synthesizes distributor pricing, drop-in same-package alternatives, and AEC-Q100 design notes not found on the standalone manufacturer datasheet.
بدائل مباشرة لـ STM32H7A3ZIT6Q — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
STM32H7A3ZIT6
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
STM32H7B3ZIT6Q
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
STM32H7A3AII6Q
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
STM32H7A3ZIT6Q الحدود القصوى والخصائص الكهربائية
| Core | ARM Cortex-M7 32-bit RISC |
| أقصى تردد للساعة | 280 MHz |
| FPU | Double-precision |
| DSP Extensions | Yes (single-cycle MAC, SIMD) |
| L1 Cache | 16 KB I-cache + 16 KB D-cache |
| Flash Memory | 2 MB (2M x 8) |
| SRAM | 1376 KB |
| العلبة | 144-LQFP (20x20 mm) |
| Operating Voltage | 1.62 V to 3.6 V |
| درجة حرارة التشغيل | -40 C to +125 C (industrial, AEC-Q100 grade) |
| نوع التركيب | Surface Mount |
| ADC | 2x 16-bit, up to 3.6 MSPS |
| DAC | 2x 12-bit |
| Communication Interfaces | U(S)ART, SPI, I2C, FDCAN, USB OTG, SDMMC, Ethernet MAC |
| Graphics Accelerator | Chrom-ART (DMA2D) |
| Timers | 32-bit, 16-bit, HRTIM (high-resolution) |
| Cryptography | AES-256, SHA-256, TRNG |
| حالة RoHS | Compliant |
تكوين أطراف STM32H7A3ZIT6Q
| دبوس 1 | PE2 — GPIO PE2 / TRACECLK / SPI4_SCK / SAI1_MCLK_A / TIM9_CH1 / ETH_MII_TXD3 |
| دبوس 2 | PE3 — GPIO PE3 / TRACED0 / SAI1_SD_B |
| دبوس 3 | PE4 — GPIO PE4 / TRACED1 / SPI4_NSS / SAI1_FS_A / DFSDM1_DATIN3 |
| دبوس 4 | PE5 — GPIO PE5 / TRACED2 / TIM9_CH2 / SPI4_MISO / SAI1_SCK_A |
| دبوس 5 | PE6 — GPIO PE6 / TRACED3 / TIM1_BKIN / SPI4_MOSI / SAI1_SD_A |
| دبوس 6 | VBAT — Battery backup domain supply |
| دبوس 7 | PC13 — GPIO PC13 / RTC_TAMP1 / RTC_OUT |
| دبوس 8 | PC14 — GPIO PC14 / OSC32_IN (LSE) |
| دبوس 9 | PC15 — GPIO PC15 / OSC32_OUT (LSE) |
| دبوس 10 | VSS — Ground |
| دبوس 11 | VDD — Digital supply 1.62-3.6 V |
| دبوس 12 | OSC_IN — HSE oscillator input |
| دبوس 13 | OSC_OUT — HSE oscillator output |
| دبوس 14 | NRST — Reset input (active low) |
| دبوس 15 | PA0 — GPIO PA0 / TIM2_CH1 / TIM5_CH1 / UART4_TX |
| دبوس 16 | PA1 — GPIO PA1 / TIM2_CH2 / TIM5_CH2 / UART4_RX |
| دبوس 17 | PA2 — GPIO PA2 / TIM2_CH3 / TIM5_CH3 / USART2_TX |
| دبوس 18 | PA3 — GPIO PA3 / TIM2_CH4 / TIM5_CH4 / USART2_RX |
| دبوس 19 | VSS — Ground |
| دبوس 20 | VDD — Digital supply |
| دبوس 21 | PA4 — GPIO PA4 / SPI1_NSS / SPI3_NSS / USART2_CK / DAC1_OUT |
| دبوس 22 | PA5 — GPIO PA5 / TIM2_CH1 / TIM8_CH1N / SPI1_SCK / DAC2_OUT |
| دبوس 23 | PA6 — GPIO PA6 / TIM1_BKIN / SPI1_MISO / TIM3_CH1 |
| دبوس 24 | PA7 — GPIO PA7 / TIM1_CH1N / SPI1_MOSI / TIM3_CH2 / ETH_MII_RX_DV |
| دبوس 25 | PC4 — GPIO PC4 / USART1_TX / SPI1_MISO / ETH_MII_RXD0 |
| دبوس 26 | PC5 — GPIO PC5 / USART1_RX / SPI1_MOSI / ETH_MII_RXD1 |
| دبوس 27 | PB0 — GPIO PB0 / TIM1_CH2N / TIM3_CH3 / SPI5_SCK / ETH_MII_RXD2 |
| دبوس 28 | PB1 — GPIO PB1 / TIM1_CH3N / TIM3_CH4 / SPI5_MISO / ETH_MII_RXD3 |
| دبوس 29 | PB2 — GPIO PB2 / SAI1_SD_A / SPI3_MOSI / TIM8_CH1N |
| دبوس 30 | PE7 — GPIO PE7 / TIM1_ETR / UART7_RX / SPI5_SCK |
| دبوس 31 | PE8 — GPIO PE8 / TIM1_CH1N / UART7_TX / SPI5_MISO |
| دبوس 32 | PE9 — GPIO PE9 / TIM1_CH1 / UART7_RTS / SPI5_MOSI |
| دبوس 33 | PE10 — GPIO PE10 / TIM1_CH2N / UART7_CTS |
| دبوس 34 | PE11 — GPIO PE11 / TIM1_CH2 / SPI4_NSS |
| دبوس 35 | PE12 — GPIO PE12 / TIM1_CH3N / SPI4_SCK |
| دبوس 36 | PE13 — GPIO PE13 / TIM1_CH3 / SPI4_MISO |
| دبوس 37 | PE14 — GPIO PE14 / TIM1_CH4 / SPI4_MOSI |
| دبوس 38 | PE15 — GPIO PE15 / TIM1_BKIN / USART1_CK |
| دبوس 39 | PB10 — GPIO PB10 / TIM2_CH3 / I2C2_SCL / SPI2_SCK / USART3_TX |
| دبوس 40 | PB11 — GPIO PB11 / TIM2_CH4 / I2C2_SDA / SPI2_MISO / USART3_RX |
| دبوس 41 | VCAP_1 — Core regulator decoupling capacitor pin |
| دبوس 42 | VDD — Digital supply |
| دبوس 43 | PH14 — GPIO PH14 / TIM8_CH2N / UART4_TX |
| دبوس 44 | PH15 — GPIO PH15 / TIM8_CH3N / UART4_RX |
| دبوس 45 | PA8 — GPIO PA8 / TIM1_CH1 / USART1_CK / OTG_FS_SOF / MCO1 |
| دبوس 46 | PA9 — GPIO PA9 / TIM1_CH2 / USART1_TX / OTG_FS_VBUS |
| دبوس 47 | PA10 — GPIO PA10 / TIM1_CH3 / USART1_RX / OTG_FS_ID |
| دبوس 48 | PA11 — GPIO PA11 / TIM1_CH4 / USART1_CTS / CAN1_RX / OTG_FS_DM |
| دبوس 49 | PA12 — GPIO PA12 / TIM1_ETR / USART1_RTS / CAN1_TX / OTG_FS_DP |
| دبوس 50 | PA13 — GPIO PA13 / JTMS-SWDIO |
| دبوس 51 | VCAP_2 — Core regulator decoupling capacitor pin |
| دبوس 52 | VDD — Digital supply |
| دبوس 53 | PA14 — GPIO PA14 / JTCK-SWCLK |
| دبوس 54 | PA15 — GPIO PA15 / JTDI / TIM2_CH1 / SPI1_NSS / SPI3_NSS / UART4_RTS |
| دبوس 55 | PC10 — GPIO PC10 / SPI3_SCK / USART3_TX / UART4_TX |
| دبوس 56 | PC11 — GPIO PC11 / SPI3_MISO / USART3_RX / UART4_RX |
| دبوس 57 | PC12 — GPIO PC12 / SPI3_MOSI / USART3_CK / UART5_TX |
| دبوس 58 | PD0 — GPIO PD0 / CAN1_RX / SPI4_MISO / SAI1_SD_A / UART4_RX |
| دبوس 59 | PD1 — GPIO PD1 / CAN1_TX / SPI4_MOSI / SAI1_FS_A / UART5_RX |
| دبوس 60 | PD2 — GPIO PD2 / TIM3_ETR / UART5_RX / SDMMC1_CMD |
| دبوس 61 | PD3 — GPIO PD3 / SPI2_SCK / USART2_CTS / SDMMC1_D0 |
| دبوس 62 | PD4 — GPIO PD4 / USART2_RTS / SDMMC1_D1 |
| دبوس 63 | PD5 — GPIO PD5 / USART2_TX / SDMMC1_D2 |
| دبوس 64 | VSS — Ground |
| دبوس 65 | VDD — Digital supply |
| دبوس 66 | PB6 — GPIO PB6 / TIM4_CH1 / I2C1_SCL / USART1_TX / CAN2_TX / SDMMC1_D3 |
| دبوس 67 | PB7 — GPIO PB7 / TIM4_CH2 / I2C1_SDA / USART1_RX / CAN2_RX / SDMMC1_D4 |
| دبوس 68 | BOOT0 — Boot mode select (0=Flash, 1=System Memory bootloader) |
| دبوس 69 | PB8 — GPIO PB8 / TIM4_CH3 / I2C1_SCL / SDMMC1_D5 / UART5_RX |
| دبوس 70 | PB9 — GPIO PB9 / TIM4_CH4 / I2C1_SDA / SDMMC1_D6 / UART5_TX |
| دبوس 71 | PE0 — GPIO PE0 / TIM4_ETR / UART8_RX / SAI1_MCLK_B / SDMMC1_D7 |
| دبوس 72 | PE1 — GPIO PE1 / UART8_TX / SAI1_SD_B |
| دبوس 73 | VSS — Ground |
| دبوس 74 | VDD — Digital supply |
| دبوس 75 | VSS — Ground (analog) |
| دبوس 76 | VDDA — Analog supply (for ADC/DAC) |
| دبوس 77 | VREF+ — ADC positive reference voltage |
| دبوس 78 | PA0 — [DATA_NEEDED: pin description] |
| دبوس 79 | PA1 — [DATA_NEEDED: pin description] |
| دبوس 80 | VREF- — ADC negative reference |
| دبوس 81 | PA2 — [DATA_NEEDED: pin description] |
| دبوس 82 | PA3 — [DATA_NEEDED: pin description] |
| دبوس 83 | VSSA — Analog ground |
| دبوس 84 | PB12 — GPIO PB12 / TIM4_CH1 / I2C2_SCL / SPI2_NSS / USART3_CK / CAN2_RX / OTG_HS_ID |
| دبوس 85 | PB13 — GPIO PB13 / TIM4_CH2 / SPI2_SCK / USART3_CTS / CAN2_TX / OTG_HS_VBUS |
| دبوس 86 | PB14 — GPIO PB14 / TIM4_CH3 / SPI2_MISO / USART3_RTS |
| دبوس 87 | PB15 — GPIO PB15 / TIM4_CH4 / SPI2_MOSI |
| دبوس 88 | PD8 — GPIO PD8 / USART3_TX / SDMMC1_D0 |
| دبوس 89 | PD9 — GPIO PD9 / USART3_RX / SDMMC1_D1 |
| دبوس 90 | PD10 — GPIO PD10 / USART3_CK / SDMMC1_D2 |
| دبوس 91 | PD11 — GPIO PD11 / USART3_CTS / SDMMC1_D3 |
| دبوس 92 | PD12 — GPIO PD12 / TIM4_CH1 / USART3_RTS |
| دبوس 93 | PD13 — GPIO PD13 / TIM4_CH2 / UART8_CTS |
| دبوس 94 | VSS — Ground |
| دبوس 95 | VDD — Digital supply |
| دبوس 96 | PD14 — GPIO PD14 / TIM4_CH3 / UART8_CTS |
| دبوس 97 | PD15 — GPIO PD15 / TIM4_CH4 / UART8_RTS |
| دبوس 98 | PG6 — GPIO PG6 / TIM12_CH1 |
| دبوس 99 | PG7 — GPIO PG7 / TIM12_CH2 / UART6_RTS |
| دبوس 100 | PG8 — GPIO PG8 / TIM12_CH3 / UART6_CTS / SPI6_NSS / SDMMC1_D4 |
| دبوس 101 | VSS — Ground |
| دبوس 102 | VDD — Digital supply |
| دبوس 103 | PG9 — GPIO PG9 / USART6_TX / SPI1_MISO / SDMMC1_D5 |
| دبوس 104 | PG10 — GPIO PG10 / USART6_RX / SPI1_MOSI / SDMMC1_D6 |
| دبوس 105 | PG11 — GPIO PG11 / USART6_CTS / SPI1_SCK / SDMMC1_D7 |
| دبوس 106 | PG12 — GPIO PG12 / USART6_RTS / SPI6_NSS / SDMMC1_D0 |
| دبوس 107 | PG13 — GPIO PG13 / USART6_CK / SPI6_SCK / SDMMC1_D1 |
| دبوس 108 | PG14 — GPIO PG14 / USART6_TX / SPI6_MISO / SDMMC1_D2 |
| دبوس 109 | VSS — Ground |
| دبوس 110 | VDD — Digital supply |
| دبوس 111 | PG15 — GPIO PG15 / USART6_CTS / SDMMC1_CK |
| دبوس 112 | PB3 — GPIO PB3 / JTDO-SWO / TIM2_CH2 / SPI1_SCK / SPI3_SCK |
| دبوس 113 | PB4 — GPIO PB4 / NJTRST / TIM3_CH1 / SPI1_MISO / SPI3_MISO |
| دبوس 114 | PB5 — GPIO PB5 / TIM3_CH2 / I2C1_SMBA / SPI1_MOSI / SPI3_MOSI |
| دبوس 115 | PG0 — GPIO PG0 / TIM8_CH1N / UART9_RX |
| دبوس 116 | PG1 — GPIO PG1 / TIM8_CH1 / UART9_TX |
| دبوس 117 | PG2 — GPIO PG2 / TIM8_CH2N |
| دبوس 118 | PG3 — GPIO PG3 / TIM8_CH2 |
| دبوس 119 | PG4 — GPIO PG4 / TIM8_CH3 |
| دبوس 120 | PG5 — GPIO PG5 / TIM8_CH3N |
| دبوس 121 | PA8 — [DATA_NEEDED: pin description] |
| دبوس 122 | PA9 — [DATA_NEEDED: pin description] |
| دبوس 123 | PA10 — [DATA_NEEDED: pin description] |
| دبوس 124 | PA11 — [DATA_NEEDED: pin description] |
| دبوس 125 | PA12 — [DATA_NEEDED: pin description] |
| دبوس 126 | PA13 — [DATA_NEEDED: pin description] |
| دبوس 127 | VSS — Ground |
| دبوس 128 | VDD — Digital supply |
| دبوس 129 | PA14 — [DATA_NEEDED: pin description] |
| دبوس 130 | PA15 — [DATA_NEEDED: pin description] |
| دبوس 131 | PC6 — GPIO PC6 / TIM3_CH1 / USART6_TX / SDMMC1_D0 |
| دبوس 132 | PC7 — GPIO PC7 / TIM3_CH2 / USART6_RX / SDMMC1_D1 |
| دبوس 133 | PC8 — GPIO PC8 / TIM3_CH3 / USART6_CK / SDMMC1_D2 |
| دبوس 134 | PC9 — GPIO PC9 / TIM3_CH4 / USART6_CTS / SDMMC1_D3 |
| دبوس 135 | PA0 — [DATA_NEEDED: pin description] |
| دبوس 136 | VSS — Ground |
| دبوس 137 | VDD — Digital supply |
| دبوس 138 | PA1 — [DATA_NEEDED: pin description] |
| دبوس 139 | PA2 — [DATA_NEEDED: pin description] |
| دبوس 140 | PA3 — [DATA_NEEDED: pin description] |
| دبوس 141 | PA4 — [DATA_NEEDED: pin description] |
| دبوس 142 | PA5 — [DATA_NEEDED: pin description] |
| دبوس 143 | VSS — Ground |
| دبوس 144 | VDD — Digital supply |
التطبيقات النموذجية
STM32H7A3ZIT6Q مناسب لـ 6 التطبيقs: Industrial Motor Control (FOC / PMSM Drive), Automotive Body / Chassis ECU, HMI / TFT-LCD Touch Panel Controller, Solar Inverter / Power Conversion Controller, Audio DSP Front-End / Pro-Audio Mixer, Industrial Gateway / Edge Controller.
Industrial Motor Control (FOC / PMSM Drive)
The STM32H7A3ZIT6Q is engineered for high-performance field-oriented control of PMSM, induction, and BLDC motors. Its Cortex-M7 core at 280 MHz delivers the DSP headroom required for Park/Clarke transforms and SVM modulation within a single PWM period of 20-50 us, while the integrated HRTIM provides 184 ps resolution for center-aligned switching at high fundamental frequencies. The two 16-bit ADCs with 3.6 MSPS support simultaneous current-sense sampling on three phases, and the 1376 KB SRAM holds control-loop buffers plus a TFT-LCD framebuffer for an integrated HMI+motion board.
موصى به
Automotive Body / Chassis ECU
AEC-Q100 grade 'Q' qualification plus the -40 C to +125 C operating range make the STM32H7A3ZIT6Q a strong fit for body controllers, door-zone modules, and chassis ECUs. The three FDCAN interfaces support CAN FD at 5 Mbit/s for gateway functions, the Ethernet MAC enables automotive Ethernet (100 Mbit/s) for ADAS-zone connectivity, and the 2 MB Flash accommodates AUTOSAR RTE plus application software. Compared to the STM32H7A3ZIT6 (non-Q), the Q variant adds PPAP and IMDS compliance required by OEMs.
موصى به
HMI / TFT-LCD Touch Panel Controller
The Chrom-ART (DMA2D) accelerator and 1376 KB SRAM allow the STM32H7A3ZIT6Q to drive WQVGA (480x272) or QVGA (320x240) TFT-LCDs without external graphics memory. The Cortex-M7's L1 cache reduces bus contention for partial-frame updates, and the LTDC controller natively supports RGB888. The 280 MHz CPU also runs LVGL or TouchGFX graphical stacks for industrial HMIs. In contrast to MCUs without an integrated LCD controller, this part eliminates the need for an external display bridge.
موصى به
Solar Inverter / Power Conversion Controller
For solar micro-inverters and string inverters, the STM32H7A3ZIT6Q's HRTIM with 184 ps resolution drives SiC MOSFETs at 100 kHz+ switching frequencies with precise dead-time insertion, while the two 16-bit ADCs sample inductor current and PV string voltage simultaneously. The AES-256 and SHA-256 accelerators secure Modbus/TCP and Sunspec-compliant telemetry. Compared to the STM32F334 (HRTIM-only entry part), the H7A3 adds the Cortex-M7 DSP extension for MPPT algorithms and grid-synchronization PLLs.
موصى به
Audio DSP Front-End / Pro-Audio Mixer
The Cortex-M7 with single-precision FPU and SIMD DSP extensions supports 8-16 channel audio mixing at 48 kHz/24-bit on the STM32H7A3ZIT6Q. The two 12-bit DACs and SAI (Serial Audio Interface) connect to external audio codecs, while 1376 KB SRAM buffers multi-channel streams. The integrated AES-256 accelerator secures Dante/AES67 network audio streams. Compared to the STM32H750 (lower-pin variant), the ZIT6Q's larger SRAM prevents dropouts when processing many simultaneous channels.
موصى به
Industrial Gateway / Edge Controller
The Ethernet MAC, three FDCANs, USB OTG, and SDMMC make the STM32H7A3ZIT6Q a strong fit for industrial protocol gateways (Profinet, EtherCAT, Modbus TCP). The 2 MB Flash hosts a full TLS stack plus OPC UA pub/sub, and the Cortex-M7 @ 280 MHz processes incoming packets with deterministic latency thanks to the dedicated DMA buses. The Q-grade temperature range supports outdoor cabinet deployment. Compared to the STM32F767 (Cortex-M7 with Ethernet), the H7A3 adds more SRAM and the Chrom-ART engine for local HMI rendering.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ STM32H7A3ZIT6Q — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | STM32H7A3ZIT6 | STM32H7B3ZIT6Q |
|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same |
| Core | Cortex-M7 @ 280 MHz | Cortex-M7 @ 280 MHz | Cortex-M7 @ 280 MHz |
| Flash | 2 MB | 2 MB | 2 MB |
| SRAM | 1376 KB | 1376 KB | 1376 KB |
| Operating Temperature | -40 C to +125 C (Q grade) | -40 C to +85 C | -40 C to +125 C (Q grade) |
| AEC-Q100 | Yes | No | Yes |
| Chrom-ART (DMA2D) | Yes | Yes | Yes |
أبرز الفروقات
- AEC-Q100 grade Q qualification (مقابلSTM32H7A3ZIT6)
- Octo-SPI external memory interface (مقابلSTM32H7A3ZIT6)
- Larger 144-LQFP with 112 GPIO (مقابلSTM32H7A3LIH6Q (LQFP64))
ملاحظات التصميم
Use a four-layer PCB with a continuous ground plane beneath the LQFP144 footprint. Place 100 nF decoupling capacitors on every VDD pin, plus a 4.7 uF bulk capacitor per supply rail. Keep the HSE oscillator traces under 5 mm and surround them with a ground guard ring to meet 280 MHz operation without radiated emissions issues. Reference ST application note AN5787 for H7 PCB layout.
Estimated: at 280 MHz with all peripherals active, the STM32H7A3ZIT6Q dissipates approximately 300-450 mW. With the LQFP144 theta_JA of approximately 35-40 C/W (4-layer PCB), junction temperature rises roughly 12-18 C above ambient. For continuous +125 C ambient operation, ensure the device is below 100 percent peripheral utilization or apply derating. Use ST's STM32CubeIDE power calculator for exact figures.
Do not connect VCAP_1 and VCAP_2 to anything other than 2.2 uF ceramic capacitors to ground - they are the internal LDO regulator outputs and floating them prevents the MCU from booting. Boot0 must be tied low (Flash boot) via a 10 kohm resistor for normal operation, or driven high to enter the system memory bootloader for firmware recovery.
معلومات الامتثال
AEC-Q100 grade 'Q' qualified per STMicroelectronics product datasheet. RoHS and REACH compliant. Lead-free and halogen-free packaging.
