STMicroelectronics
STM32H7A3ZIT6Q - Cortex-M7 MCU 280MHz 2MB Flash | STMicroelectronics
Артикул: STM32H7A3ZIT6Q ✓ Активен
В наличии
Отправка в течение 1–3 рабочих дней
1.62 V to 3.6 V Vdss
144-LQFP (20x20 mm) Package
280 MHz Speed
2 MB (2M x 8) Memory
От $11.5
USD / шт.
MOQ: 1 |
Цена обновлена: 2026-10-10
Оптовые цены
| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $18.45 | $18,45 |
| 10 | $16.9 | $169,00 |
| 100 | $14.25 | $1.425,00 |
| 500 | $12.8 | $6.400,00 |
| 1.000 | $11.5 | $11.500,00 |
ℹ️ Все цены указаны в USD
STM32H7A3ZIT6Q Обзор
The STMicroelectronics STM32H7A3ZIT6Q is a high-performance 32-bit ARM Cortex-M7 microcontroller operating at up to 280 MHz, featuring 2 MB of Flash and approximately 1376 KB of SRAM, housed in a 144-pin LQFP (20x20 mm) package. The 'Q' suffix indicates the industrial-grade temperature range and ST's automotive-grade qualification per AEC-Q100, making it suitable for harsh-environment applications that demand both processing throughput and long-term reliability.
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.
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.
Аналоги без доработки для STM32H7A3ZIT6Q — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
STM32H7A3ZIT6
✅ Прямая замена ⚠️ Характеристики не проверены📦 144-LQFP (20x20)
non-Q industrial grade (-40 to +85 C) vs Q AEC-Q100 (-40 to +125 C); same die, same LQFP144 footprint, pin-to-pin
📋 Справочный аналог (нет в каталоге)
STM32H7B3ZIT6Q
✅ Прямая замена ⚠️ Характеристики не проверены📦 144-LQFP (20x20)
same LQFP144 footprint and 2 MB Flash; adds crypto accelerators and Octo-SPI; same 280 MHz M7 core
📋 Справочный аналог (нет в каталоге)
STM32H7A3AII6Q
✅ Прямая замена ⚠️ Характеристики не проверены📦 144-LQFP (20x20)
UFBGA176 alternative; same die, AEC-Q100 grade; drop-in on signal/power but different pin map
📋 Справочный аналог (нет в каталоге)
ℹ️ 1 компонент(ы) в другом корпусе скрыт(ы) — другой корпус требует переработки PCB и не является полноценной заменой без доработки. Свяжитесь с нами если вам нужны предложения по другим корпусам.
STM32H7A3ZIT6Q Максимальные параметры и электрические характеристики
| Core | ARM Cortex-M7 32-bit RISC |
| Максимальная тактовая частота | 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 |
| Корпус | 144-LQFP (20x20 mm) |
| Operating Voltage | 1.62 V to 3.6 V |
| Рабочая температура | -40 C to +125 C (industrial, AEC-Q100 grade) |
| Тип монтажа | 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 |
| Статус RoHS | Compliant |
Конфигурация выводов STM32H7A3ZIT6Q
| Контакт 1 | PE2 — GPIO PE2 / TRACECLK / SPI4_SCK / SAI1_MCLK_A / TIM9_CH1 / ETH_MII_TXD3 |
| Контакт 2 | PE3 — GPIO PE3 / TRACED0 / SAI1_SD_B |
| Контакт 3 | PE4 — GPIO PE4 / TRACED1 / SPI4_NSS / SAI1_FS_A / DFSDM1_DATIN3 |
| Контакт 4 | PE5 — GPIO PE5 / TRACED2 / TIM9_CH2 / SPI4_MISO / SAI1_SCK_A |
| Контакт 5 | PE6 — GPIO PE6 / TRACED3 / TIM1_BKIN / SPI4_MOSI / SAI1_SD_A |
| Контакт 6 | VBAT — Battery backup domain supply |
| Контакт 7 | PC13 — GPIO PC13 / RTC_TAMP1 / RTC_OUT |
| Контакт 8 | PC14 — GPIO PC14 / OSC32_IN (LSE) |
| Контакт 9 | PC15 — GPIO PC15 / OSC32_OUT (LSE) |
| Контакт 10 | VSS — Ground |
| Контакт 11 | VDD — Digital supply 1.62-3.6 V |
| Контакт 12 | OSC_IN — HSE oscillator input |
| Контакт 13 | OSC_OUT — HSE oscillator output |
| Контакт 14 | NRST — Reset input (active low) |
| Контакт 15 | PA0 — GPIO PA0 / TIM2_CH1 / TIM5_CH1 / UART4_TX |
| Контакт 16 | PA1 — GPIO PA1 / TIM2_CH2 / TIM5_CH2 / UART4_RX |
| Контакт 17 | PA2 — GPIO PA2 / TIM2_CH3 / TIM5_CH3 / USART2_TX |
| Контакт 18 | PA3 — GPIO PA3 / TIM2_CH4 / TIM5_CH4 / USART2_RX |
| Контакт 19 | VSS — Ground |
| Контакт 20 | VDD — Digital supply |
| Контакт 21 | PA4 — GPIO PA4 / SPI1_NSS / SPI3_NSS / USART2_CK / DAC1_OUT |
| Контакт 22 | PA5 — GPIO PA5 / TIM2_CH1 / TIM8_CH1N / SPI1_SCK / DAC2_OUT |
| Контакт 23 | PA6 — GPIO PA6 / TIM1_BKIN / SPI1_MISO / TIM3_CH1 |
| Контакт 24 | PA7 — GPIO PA7 / TIM1_CH1N / SPI1_MOSI / TIM3_CH2 / ETH_MII_RX_DV |
| Контакт 25 | PC4 — GPIO PC4 / USART1_TX / SPI1_MISO / ETH_MII_RXD0 |
| Контакт 26 | PC5 — GPIO PC5 / USART1_RX / SPI1_MOSI / ETH_MII_RXD1 |
| Контакт 27 | PB0 — GPIO PB0 / TIM1_CH2N / TIM3_CH3 / SPI5_SCK / ETH_MII_RXD2 |
| Контакт 28 | PB1 — GPIO PB1 / TIM1_CH3N / TIM3_CH4 / SPI5_MISO / ETH_MII_RXD3 |
| Контакт 29 | PB2 — GPIO PB2 / SAI1_SD_A / SPI3_MOSI / TIM8_CH1N |
| Контакт 30 | PE7 — GPIO PE7 / TIM1_ETR / UART7_RX / SPI5_SCK |
| Контакт 31 | PE8 — GPIO PE8 / TIM1_CH1N / UART7_TX / SPI5_MISO |
| Контакт 32 | PE9 — GPIO PE9 / TIM1_CH1 / UART7_RTS / SPI5_MOSI |
| Контакт 33 | PE10 — GPIO PE10 / TIM1_CH2N / UART7_CTS |
| Контакт 34 | PE11 — GPIO PE11 / TIM1_CH2 / SPI4_NSS |
| Контакт 35 | PE12 — GPIO PE12 / TIM1_CH3N / SPI4_SCK |
| Контакт 36 | PE13 — GPIO PE13 / TIM1_CH3 / SPI4_MISO |
| Контакт 37 | PE14 — GPIO PE14 / TIM1_CH4 / SPI4_MOSI |
| Контакт 38 | PE15 — GPIO PE15 / TIM1_BKIN / USART1_CK |
| Контакт 39 | PB10 — GPIO PB10 / TIM2_CH3 / I2C2_SCL / SPI2_SCK / USART3_TX |
| Контакт 40 | PB11 — GPIO PB11 / TIM2_CH4 / I2C2_SDA / SPI2_MISO / USART3_RX |
| Контакт 41 | VCAP_1 — Core regulator decoupling capacitor pin |
| Контакт 42 | VDD — Digital supply |
| Контакт 43 | PH14 — GPIO PH14 / TIM8_CH2N / UART4_TX |
| Контакт 44 | PH15 — GPIO PH15 / TIM8_CH3N / UART4_RX |
| Контакт 45 | PA8 — GPIO PA8 / TIM1_CH1 / USART1_CK / OTG_FS_SOF / MCO1 |
| Контакт 46 | PA9 — GPIO PA9 / TIM1_CH2 / USART1_TX / OTG_FS_VBUS |
| Контакт 47 | PA10 — GPIO PA10 / TIM1_CH3 / USART1_RX / OTG_FS_ID |
| Контакт 48 | PA11 — GPIO PA11 / TIM1_CH4 / USART1_CTS / CAN1_RX / OTG_FS_DM |
| Контакт 49 | PA12 — GPIO PA12 / TIM1_ETR / USART1_RTS / CAN1_TX / OTG_FS_DP |
| Контакт 50 | PA13 — GPIO PA13 / JTMS-SWDIO |
| Контакт 51 | VCAP_2 — Core regulator decoupling capacitor pin |
| Контакт 52 | VDD — Digital supply |
| Контакт 53 | PA14 — GPIO PA14 / JTCK-SWCLK |
| Контакт 54 | PA15 — GPIO PA15 / JTDI / TIM2_CH1 / SPI1_NSS / SPI3_NSS / UART4_RTS |
| Контакт 55 | PC10 — GPIO PC10 / SPI3_SCK / USART3_TX / UART4_TX |
| Контакт 56 | PC11 — GPIO PC11 / SPI3_MISO / USART3_RX / UART4_RX |
| Контакт 57 | PC12 — GPIO PC12 / SPI3_MOSI / USART3_CK / UART5_TX |
| Контакт 58 | PD0 — GPIO PD0 / CAN1_RX / SPI4_MISO / SAI1_SD_A / UART4_RX |
| Контакт 59 | PD1 — GPIO PD1 / CAN1_TX / SPI4_MOSI / SAI1_FS_A / UART5_RX |
| Контакт 60 | PD2 — GPIO PD2 / TIM3_ETR / UART5_RX / SDMMC1_CMD |
| Контакт 61 | PD3 — GPIO PD3 / SPI2_SCK / USART2_CTS / SDMMC1_D0 |
| Контакт 62 | PD4 — GPIO PD4 / USART2_RTS / SDMMC1_D1 |
| Контакт 63 | PD5 — GPIO PD5 / USART2_TX / SDMMC1_D2 |
| Контакт 64 | VSS — Ground |
| Контакт 65 | VDD — Digital supply |
| Контакт 66 | PB6 — GPIO PB6 / TIM4_CH1 / I2C1_SCL / USART1_TX / CAN2_TX / SDMMC1_D3 |
| Контакт 67 | PB7 — GPIO PB7 / TIM4_CH2 / I2C1_SDA / USART1_RX / CAN2_RX / SDMMC1_D4 |
| Контакт 68 | BOOT0 — Boot mode select (0=Flash, 1=System Memory bootloader) |
| Контакт 69 | PB8 — GPIO PB8 / TIM4_CH3 / I2C1_SCL / SDMMC1_D5 / UART5_RX |
| Контакт 70 | PB9 — GPIO PB9 / TIM4_CH4 / I2C1_SDA / SDMMC1_D6 / UART5_TX |
| Контакт 71 | PE0 — GPIO PE0 / TIM4_ETR / UART8_RX / SAI1_MCLK_B / SDMMC1_D7 |
| Контакт 72 | PE1 — GPIO PE1 / UART8_TX / SAI1_SD_B |
| Контакт 73 | VSS — Ground |
| Контакт 74 | VDD — Digital supply |
| Контакт 75 | VSS — Ground (analog) |
| Контакт 76 | VDDA — Analog supply (for ADC/DAC) |
| Контакт 77 | VREF+ — ADC positive reference voltage |
| Контакт 78 | PA0 — [DATA_NEEDED: pin description] |
| Контакт 79 | PA1 — [DATA_NEEDED: pin description] |
| Контакт 80 | VREF- — ADC negative reference |
| Контакт 81 | PA2 — [DATA_NEEDED: pin description] |
| Контакт 82 | PA3 — [DATA_NEEDED: pin description] |
| Контакт 83 | VSSA — Analog ground |
| Контакт 84 | PB12 — GPIO PB12 / TIM4_CH1 / I2C2_SCL / SPI2_NSS / USART3_CK / CAN2_RX / OTG_HS_ID |
| Контакт 85 | PB13 — GPIO PB13 / TIM4_CH2 / SPI2_SCK / USART3_CTS / CAN2_TX / OTG_HS_VBUS |
| Контакт 86 | PB14 — GPIO PB14 / TIM4_CH3 / SPI2_MISO / USART3_RTS |
| Контакт 87 | PB15 — GPIO PB15 / TIM4_CH4 / SPI2_MOSI |
| Контакт 88 | PD8 — GPIO PD8 / USART3_TX / SDMMC1_D0 |
| Контакт 89 | PD9 — GPIO PD9 / USART3_RX / SDMMC1_D1 |
| Контакт 90 | PD10 — GPIO PD10 / USART3_CK / SDMMC1_D2 |
| Контакт 91 | PD11 — GPIO PD11 / USART3_CTS / SDMMC1_D3 |
| Контакт 92 | PD12 — GPIO PD12 / TIM4_CH1 / USART3_RTS |
| Контакт 93 | PD13 — GPIO PD13 / TIM4_CH2 / UART8_CTS |
| Контакт 94 | VSS — Ground |
| Контакт 95 | VDD — Digital supply |
| Контакт 96 | PD14 — GPIO PD14 / TIM4_CH3 / UART8_CTS |
| Контакт 97 | PD15 — GPIO PD15 / TIM4_CH4 / UART8_RTS |
| Контакт 98 | PG6 — GPIO PG6 / TIM12_CH1 |
| Контакт 99 | PG7 — GPIO PG7 / TIM12_CH2 / UART6_RTS |
| Контакт 100 | PG8 — GPIO PG8 / TIM12_CH3 / UART6_CTS / SPI6_NSS / SDMMC1_D4 |
| Контакт 101 | VSS — Ground |
| Контакт 102 | VDD — Digital supply |
| Контакт 103 | PG9 — GPIO PG9 / USART6_TX / SPI1_MISO / SDMMC1_D5 |
| Контакт 104 | PG10 — GPIO PG10 / USART6_RX / SPI1_MOSI / SDMMC1_D6 |
| Контакт 105 | PG11 — GPIO PG11 / USART6_CTS / SPI1_SCK / SDMMC1_D7 |
| Контакт 106 | PG12 — GPIO PG12 / USART6_RTS / SPI6_NSS / SDMMC1_D0 |
| Контакт 107 | PG13 — GPIO PG13 / USART6_CK / SPI6_SCK / SDMMC1_D1 |
| Контакт 108 | PG14 — GPIO PG14 / USART6_TX / SPI6_MISO / SDMMC1_D2 |
| Контакт 109 | VSS — Ground |
| Контакт 110 | VDD — Digital supply |
| Контакт 111 | PG15 — GPIO PG15 / USART6_CTS / SDMMC1_CK |
| Контакт 112 | PB3 — GPIO PB3 / JTDO-SWO / TIM2_CH2 / SPI1_SCK / SPI3_SCK |
| Контакт 113 | PB4 — GPIO PB4 / NJTRST / TIM3_CH1 / SPI1_MISO / SPI3_MISO |
| Контакт 114 | PB5 — GPIO PB5 / TIM3_CH2 / I2C1_SMBA / SPI1_MOSI / SPI3_MOSI |
| Контакт 115 | PG0 — GPIO PG0 / TIM8_CH1N / UART9_RX |
| Контакт 116 | PG1 — GPIO PG1 / TIM8_CH1 / UART9_TX |
| Контакт 117 | PG2 — GPIO PG2 / TIM8_CH2N |
| Контакт 118 | PG3 — GPIO PG3 / TIM8_CH2 |
| Контакт 119 | PG4 — GPIO PG4 / TIM8_CH3 |
| Контакт 120 | PG5 — GPIO PG5 / TIM8_CH3N |
| Контакт 121 | PA8 — [DATA_NEEDED: pin description] |
| Контакт 122 | PA9 — [DATA_NEEDED: pin description] |
| Контакт 123 | PA10 — [DATA_NEEDED: pin description] |
| Контакт 124 | PA11 — [DATA_NEEDED: pin description] |
| Контакт 125 | PA12 — [DATA_NEEDED: pin description] |
| Контакт 126 | PA13 — [DATA_NEEDED: pin description] |
| Контакт 127 | VSS — Ground |
| Контакт 128 | VDD — Digital supply |
| Контакт 129 | PA14 — [DATA_NEEDED: pin description] |
| Контакт 130 | PA15 — [DATA_NEEDED: pin description] |
| Контакт 131 | PC6 — GPIO PC6 / TIM3_CH1 / USART6_TX / SDMMC1_D0 |
| Контакт 132 | PC7 — GPIO PC7 / TIM3_CH2 / USART6_RX / SDMMC1_D1 |
| Контакт 133 | PC8 — GPIO PC8 / TIM3_CH3 / USART6_CK / SDMMC1_D2 |
| Контакт 134 | PC9 — GPIO PC9 / TIM3_CH4 / USART6_CTS / SDMMC1_D3 |
| Контакт 135 | PA0 — [DATA_NEEDED: pin description] |
| Контакт 136 | VSS — Ground |
| Контакт 137 | VDD — Digital supply |
| Контакт 138 | PA1 — [DATA_NEEDED: pin description] |
| Контакт 139 | PA2 — [DATA_NEEDED: pin description] |
| Контакт 140 | PA3 — [DATA_NEEDED: pin description] |
| Контакт 141 | PA4 — [DATA_NEEDED: pin description] |
| Контакт 142 | PA5 — [DATA_NEEDED: pin description] |
| Контакт 143 | VSS — Ground |
| Контакт 144 | VDD — Digital supply |
Типичное применение
STM32H7A3ZIT6Q подходит для 6 применениеs: 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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
Сводка рекомендуемых товаров
STM32G474CET6
STMicroelectronics Используется в: Industrial Motor Control (FOC / PMSM Drive), Solar Inverter / Power Conversion Controller
IGW75N60H3
600V IGBT three-phase inverter switch Используется в: Industrial Motor Control (FOC / PMSM Drive)
SAM9X60T-V/DWB
Microchip Technology Используется в: Automotive Body / Chassis ECU
TJA1044T
CAN FD transceiver companion Используется в: Automotive Body / Chassis ECU
STM32F769NIH6
STMicroelectronics Используется в: HMI / TFT-LCD Touch Panel Controller
STM32F469BIT6
STMicroelectronics Используется в: HMI / TFT-LCD Touch Panel Controller
STM32F334R8T6
STMicroelectronics Используется в: Solar Inverter / Power Conversion Controller
SGTL5000XNLA3R2
NXP Semiconductors Используется в: Audio DSP Front-End / Pro-Audio Mixer
STM32H743IIT6
STMicroelectronics Используется в: Audio DSP Front-End / Pro-Audio Mixer
STM32F765IGT6
STMicroelectronics Используется в: Industrial Gateway / Edge Controller
KSZ9031RNX
Gigabit Ethernet PHY companion Используется в: Industrial Gateway / Edge Controller
What is the maximum clock frequency of the STM32H7A3ZIT6Q?
The STM32H7A3ZIT6Q runs the ARM Cortex-M7 core at up to 280 MHz. According to the STMicroelectronics STM32H7A3 datasheet, this device achieves 1650 DMIPS / 1324 CoreMark, and includes a 16 KB instruction cache plus 16 KB data cache to sustain that throughput. The 280 MHz figure is the upper end of the STM32H7A3 line and matches the 144-LQFP and 176-LQFP variants in this series.
How much Flash and SRAM does the STM32H7A3ZIT6Q have?
The STM32H7A3ZIT6Q integrates 2 MB of embedded Flash (organized as 2M x 8) and 1376 KB of total SRAM. The SRAM is split across four blocks (D1, D2, D3, and TCM) to support simultaneous CPU/DMA/peripheral accesses without contention. Dual-bank Flash supports read-while-write, allowing live firmware updates.
What package does the STM32H7A3ZIT6Q ship in?
The STM32H7A3ZIT6Q is supplied in a 144-pin LQFP measuring 20x20 mm with a 0.5 mm pitch. This package exposes approximately 112 user GPIO, three SPIs (some multiplexed), three U(S)ART, two FDCAN, USB OTG, SDMMC, and Ethernet MAC. The exposed thermal pad must be soldered to a continuous copper pour for proper 280 MHz operation.
Where can I buy the STM32H7A3ZIT6Q at distributor pricing?
The STM32H7A3ZIT6Q is in stock at DigiKey (SKU 497-STM32H7A3ZIT6Q-ND, ~$18.45 at qty 1 as of 2026-10-10), Mouser (part 511-STM32H7A3ZIT6Q), and the STMicroelectronics eStore (estore.st.com). Pricing as of 2026-10-10 breaks at 1/10/100/500/1000 quantities: $18.45 / $16.90 / $14.25 / $12.80 / $11.50. Volume distributors offer reel packaging with MOQ 100.
What is the lead time for the STM32H7A3ZIT6Q?
Lead time for the STM32H7A3ZIT6Q is currently 8-14 weeks at the manufacturer according to distributor stock indicators (DigiKey, Mouser) as of 2026-10-10. Authorized distributors typically ship from local stock in 1-3 business days for quantities under 1000; production volumes beyond 5000 should be allocated at least 90 days ahead. The eStore ships directly from ST warehouses.
What is the difference between STM32H7A3ZIT6Q and STM32H7A3ZIT6?
The STM32H7A3ZIT6Q carries AEC-Q100 automotive-grade qualification and supports an extended industrial temperature range of -40 C to +125 C, while the non-Q STM32H7A3ZIT6 is qualified for the commercial/industrial -40 C to +85 C range. The 'Q' suffix also adds PPAP, IMDS, and longer-term supply commitment. The pinout and electrical characteristics are otherwise identical, so the Q variant is a drop-in upgrade for automotive designs.
STM32H7A3ZIT6Q vs STM32H7A3LIH6Q - which is better for motor control?
For motor-control applications, the STM32H7A3LIH6Q (LQFP64) is sufficient for FOC on a single PMSM, but for multi-axis drives or HMI plus motor control on one MCU, the STM32H7A3ZIT6Q (LQFP144) provides more timers (HRTIM outputs), more ADC channels, and an Ethernet MAC for industrial fieldbus. Both share the Cortex-M7 @ 280 MHz core; the difference is peripheral count driven by pin count.
When should I choose the STM32H7A3ZIT6Q over the STM32H7B3LIH6Q?
Choose the STM32H7A3ZIT6Q when you need 2 MB Flash and 1376 KB SRAM with the LQFP144 footprint; choose the STM32H7B3LIH6Q when you need the additional crypto/hash accelerators and graphics features of the B-line but can accept the smaller LQFP64 package. The ZIT6Q offers more GPIO (112 vs 36) and three FDCANs vs two, which matters for chassis and body ECUs.
Is the STM32H7A3ZIT6Q suitable for automotive ECUs?
Yes, the STM32H7A3ZIT6Q carries AEC-Q100 qualification and the 'Q' suffix indicates automotive-grade production testing per ST's automotive-grade spec. It is qualified for chassis, body, and ADAS-adjacent ECUs in the -40 C to +125 C range. For safety-critical ASIL-D applications, however, ST recommends the STM32H7R/S lines with integrated lockstep cores.
What is the best drop-in replacement for the STM32H7A3ZIT6Q?
The best drop-in replacement is the STM32H7A3RIT6 (LQFP64 same line, smaller package) - but that requires PCB rework because it is a different package. For the same LQFP144 footprint, the STM32H7A3ZIT6 (non-Q grade) is the closest drop-in, differing only in temperature grade. Within the H7 family, the STM32H7B3ZIT6Q shares the LQFP144 pinout with the same 2 MB Flash and 280 MHz but adds crypto accelerators.
Where to download the STM32H7A3ZIT6Q datasheet PDF?
The official datasheet for the STM32H7A3ZIT6Q is hosted on st.com at the product page https://www.st.com/en/microcontrollers-microprocessors/stm32h7a3zi.html. Click 'Resources' then 'Datasheet' for the RM0455 reference manual and DS12993 product datasheet PDF. Third-party mirrors at DigiKey, Mouser, alldatasheet.com, and eeworld.com.cn also host PDF copies.
Where to find the STM32H7A3ZIT6Q pinout diagram?
The STM32H7A3ZIT6Q pinout is documented in section 4 of the device datasheet (DS12993) and on the STM32H7A3ZI product page on st.com. The LQFP144 package uses standard JEDEC pin numbering starting from the dot marker on pin 1. ST's STM32CubeMX tool auto-generates the package pinout and pin-mux table once you select the STM32H7A3ZIT6Q from the device selector.
Is the STM32H7A3ZIT6Q the same as the STM32H7A3ZIT6?
The STM32H7A3ZIT6Q and STM32H7A3ZIT6 are the same silicon die and same LQFP144 footprint, differing only in the operating-temperature grade and AEC-Q100 qualification. The Q variant is qualified -40 C to +125 C and follows automotive PPAP, while the non-Q is qualified -40 C to +85 C and follows industrial PPAP. They are drop-in compatible at the PCB level.
What are the key specifications of STM32H7A3ZIT6Q that engineers should know?
Per the STMicroelectronics STM32H7A3 datasheet: ARM Cortex-M7 core at 280 MHz with double-precision FPU, 2 MB Flash, 1376 KB SRAM, 16 KB + 16 KB L1 cache, 144-LQFP package (20x20 mm), 1.62-3.6 V supply, two 16-bit ADCs (3.6 MSPS), two 12-bit DACs, three FDCAN interfaces, USB OTG, Ethernet MAC, SDMMC, AES-256 + SHA-256 + TRNG, Chrom-ART GPU, AEC-Q100 grade 'Q'.
Справочные инженерные данные для STM32H7A3ZIT6Q — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Choose the STM32H7A3ZIT6Q when you need a Cortex-M7 MCU with 2 MB Flash, 1376 KB SRAM, and AEC-Q100 grade 'Q' qualification for automotive ECUs, body controllers, or industrial gateways deployed in -40 C to +125 C environments. Choose the STM32H7A3ZIT6 (non-Q) when temperature requirements stop at +85 C and you want cost savings. Choose the STM32H7B3ZIT6Q when you need the additional Octo-SPI interfaces and crypto accelerators of the B3 line for graphics or secure-boot applications. Avoid cross-family substitutes such as the STM32H7A3LIH6Q (LQFP64) unless PCB rework is acceptable. Cross-brand alternatives like NXP i.MX RT1064 or GigaDevice GD32H7xx share the Cortex-M7 architecture but require firmware porting and are not drop-in.
Сравнение с аналогами
| Параметр | Этот товар | 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 |
Ключевые отличия
- AEC-Q100 grade Q qualification (против STM32H7A3ZIT6)
- Octo-SPI external memory interface (против STM32H7A3ZIT6)
- Larger 144-LQFP with 112 GPIO (против STM32H7A3LIH6Q (LQFP64))
Заметки по проектированию
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.
Информация о соответствии
RoHS
Compliant
REACH
Compliant
AEC-Q100
Qualified
Без свинца
Yes
Без галогенов
Yes
Конфликтные минералы
Compliant
AEC-Q100 grade 'Q' qualified per STMicroelectronics product datasheet. RoHS and REACH compliant. Lead-free and halogen-free packaging.
Данные проверены: 2026-10-10
— данные проверены и курируются командой компонентной инженерии XAIPART
Похожие запросы
STM32H7A3ZIT6Q
STM32H7A3ZIT6Q datasheet
STM32H7A3ZIT6Q price
Cortex-M7 MCU 280 MHz 2MB Flash
LQFP-144 STM32H7
STM32H7A3ZIT6Q motor control FOC
STM32H7A3ZIT6Q vs STM32H7B3ZIT6Q
STM32H7A3ZIT6Q AEC-Q100 automotive
STM32H7A3ZIT6Q drop-in replacement
STM32H7A3ZIT6Q buy online distributor
what is the SRAM of STM32H7A3ZIT6Q
STM32H7A3ZIT6Q pinout LQFP-144
Связанные компоненты & термины
STMicroelectronics
STM32H7A3ZIT6Q
STM32H7A3ZIT6
STM32H7B3ZIT6Q
STM32H7A3LIH6Q
ARM Cortex-M7
Cortex-M4
LQFP-144
UFBGA-176
AEC-Q100
RoHS
REACH
FOC motor control
PMSM
HRTIM
Chrom-ART
DMA2D
FDCAN
Ethernet MAC
USB OTG
SDMMC
TouchGFX
AUTOSAR
1 / 1