STM32H7A3VIT6 - 280MHz Cortex-M7 MCU, 2MB Flash, LQFP-100 | STMicroelectronics
Référence : STM32H7A3VIT6 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1 385,00 |
| 500 | $11.95 | $5 975,00 |
| 1 000 | $10.45 | $10 450,00 |
STM32H7A3VIT6 Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), and a wide range of peripheral interfaces into one package. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers, which are a subcategory of integrated circuits (ICs); the Cortex-M7 core specifically belongs to the ARM Cortex-M family of embedded cores, optimized for deterministic real-time performance and DSP workloads. The STM32H7 series extends this family with the highest clock rates and largest memory footprints in the STM32 portfolio.
Key features include a 16-bit ADCs sampling up to 3.6 MSPS, fast 12-bit DACs, two USB 2.0 Full-Speed/High-Speed OTG controllers, multiple CAN FD, SDMMC, FMC, and a TFT-LCD controller. On-chip math accelerators (FMAC, CORDIC) and the Chrom-ART (DMA2D) graphics engine offload CPU-intensive operations, while hardware cryptographic accelerators and a true random number generator (TRNG) support secure connectivity use cases.
The Cortex-M7 core includes a double-precision FPU, L1 instruction and data caches (16 KB each), and a tightly-coupled SRAM region for zero-wait-state execution, enabling 280 MHz operation with sustained DSP throughput. The bus matrix is multi-layer AHB, allowing concurrent high-bandwidth access between the CPU, the Chrom-ART engine, and the SDMMC/USB peripherals without bus starvation.
Typical applications include industrial motor drives, factory automation PLCs, audio processing and professional audio interfaces, HMI panels with TFT displays, IoT edge nodes with secure connectivity, and automotive-grade body and comfort modules (when ordered in the AEC-Q100 'Q' suffix variant).
When designing with the STM32H7A3VIT6, pay close attention to power-supply decoupling and trace impedance around the high-speed SDMMC and USB signals. Proper boot-mode configuration on the BOOT0 pin and OTP area management is essential for field-deployable firmware security.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour STM32H7A3VIT6 — 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 STM32H7A3VIT6 (même facteur de forme et même empreinte) — différant par Package, ADC, Core, SRAM, DAC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STM32H7A3VIT6Q
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32H7A3RIT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$10.2 / unité
Voir la fiche technique →STM32H753XIH6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$13.2 / unité
Voir la fiche technique →STM32H745IIT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$10.62 / unité
Voir la fiche technique →STM32F767IIT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$11.95 / unité
Voir la fiche technique →STM32F765IGT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$13.1 / unité
Voir la fiche technique →STM32F767IGK6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$14.05 / unité
Voir la fiche technique →STM32H7A3VIT6 Valeurs maximales et caractéristiques électriques
| Core | ARM Cortex-M7 (32-bit) |
| Maximum CPU Clock | 280 MHz |
| Flash Memory | 2 MB (2M x 8) |
| SRAM | 1.4 MB total (SRAM1/SRAM2/SRAM3/SRAM4 + DTCM + AXI SRAM) |
| Supply Voltage (VDD) | 1.62 V to 3.6 V |
| Boîtier | 100-pin LQFP (14x14 mm) |
| Température de fonctionnement | -40 C to +85 C (industrial grade) |
| ADC | 3 x 16-bit, up to 3.6 MSPS |
| DAC | 2 x 12-bit |
| Communication | USB 2.0 FS+HS OTG, CAN FD, USART/UART, SPI, I2C, SAI, SDMMC, FMC |
| Graphics | Chrom-ART (DMA2D) accelerator, TFT-LCD controller (LTDC) |
| Math Accelerators | FMAC, CORDIC, single-precision hardware MAC |
| Security | Cryptographic accelerators, TRNG, secure boot support |
| FPU | Double-precision IEEE 754 |
| Cache | 16 KB I-cache + 16 KB D-cache |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de STM32H7A3VIT6
| Broche 1 | PE2 — General-purpose I/O (TRACECLK on some packages) |
| Broche 2 | PE3 — General-purpose I/O (TRACED0) |
| Broche 3 | PE4 — General-purpose I/O (TRACED1) |
| Broche 4 | PE5 — General-purpose I/O (TRACED2) |
| Broche 5 | PE6 — General-purpose I/O (TRACED3) |
| Broche 6 | VBAT — Backup battery supply for RTC/TAMP |
| Broche 7 | PC13 — GPIO / TAMPER-RTC (anti-tamper) |
| Broche 8 | PC14 — GPIO / OSC32_IN (LSE crystal) |
| Broche 9 | PC15 — GPIO / OSC32_OUT (LSE crystal) |
| Broche 10 | VSS — Ground reference |
| Broche 11 | VDD — Digital supply (1.62-3.6 V) |
| Broche 12 | PH0 — OSC_IN (HSE crystal) |
| Broche 13 | PH1 — OSC_OUT (HSE crystal) |
| Broche 14 | NRST — Reset input (active low) |
| Broche 15 | PC0 — GPIO / ADC1_INP10 |
| Broche 16 | PC1 — GPIO / ADC1_INP11 / DAC2 |
| Broche 17 | PC2 — GPIO / ADC1_INP12 |
| Broche 18 | PC3 — GPIO / ADC1_INP13 |
| Broche 19 | VSSA — Analog ground |
| Broche 20 | VDDA — Analog supply (1.62-3.6 V) |
| Broche 21 | PA0 — GPIO / ADC1_INP0 / TIM5_CH1 |
| Broche 22 | PA1 — GPIO / ADC1_INP1 / TIM5_CH2 |
| Broche 23 | PA2 — GPIO / ADC1_INP2 / USART2_TX |
| Broche 24 | PA3 — GPIO / ADC1_INP3 / USART2_RX |
| Broche 25 | VSS — Ground reference |
| Broche 26 | VDD — Digital supply (1.62-3.6 V) |
| Broche 27 | PA4 — GPIO / ADC1_INP4 / DAC1 |
| Broche 28 | PA5 — GPIO / ADC1_INP5 |
| Broche 29 | PA6 — GPIO / ADC1_INP6 / TIM13_CH1 |
| Broche 30 | PA7 — GPIO / ADC1_INP7 / TIM14_CH1 |
| Broche 31 | PC4 — GPIO / ADC2_INP4 |
| Broche 32 | PC5 — GPIO / ADC2_INP5 |
| Broche 33 | PB0 — GPIO / ADC2_INP8 / TIM3_CH3 |
| Broche 34 | PB1 — GPIO / ADC2_INP9 / TIM3_CH4 |
| Broche 35 | PB2 — GPIO / BOOT1 |
| Broche 36 | PE7 — GPIO / TIM1_ETR |
| Broche 37 | PE8 — GPIO / TIM1_CH1N |
| Broche 38 | PE9 — GPIO / TIM1_CH1 |
| Broche 39 | PE10 — GPIO / TIM1_CH2N |
| Broche 40 | PE11 — GPIO / TIM1_CH2 |
| Broche 41 | PE12 — GPIO / TIM1_CH3N |
| Broche 42 | PE13 — GPIO / TIM1_CH3 |
| Broche 43 | PE14 — GPIO / TIM1_CH4 |
| Broche 44 | PE15 — GPIO / TIM1_BKIN |
| Broche 45 | PB10 — GPIO / I2C2_SCL / USART3_TX |
| Broche 46 | PB11 — GPIO / I2C2_SDA / USART3_RX |
| Broche 47 | VCAP_1 — Core voltage decoupling (1.0 V regulator output) |
| Broche 48 | VDD — Digital supply (1.62-3.6 V) |
| Broche 49 | PB12 — GPIO / SPI2_NSS / TIM1_BKIN |
| Broche 50 | PB13 — GPIO / SPI2_SCK |
| Broche 51 | PB14 — GPIO / SPI2_MISO |
| Broche 52 | PB15 — GPIO / SPI2_MOSI |
| Broche 53 | PD8 — GPIO / USART3_TX |
| Broche 54 | PD9 — GPIO / USART3_RX |
| Broche 55 | PD10 — GPIO |
| Broche 56 | PD11 — GPIO |
| Broche 57 | PD12 — GPIO / TIM4_CH1 |
| Broche 58 | PD13 — GPIO / TIM4_CH2 |
| Broche 59 | PD14 — GPIO / TIM4_CH3 |
| Broche 60 | PD15 — GPIO / TIM4_CH4 |
| Broche 61 | PC6 — GPIO / TIM3_CH1 / USART6_TX |
| Broche 62 | PC7 — GPIO / TIM3_CH2 / USART6_RX |
| Broche 63 | PC8 — GPIO / TIM3_CH3 / SDMMC1_D0 |
| Broche 64 | PC9 — GPIO / TIM3_CH4 / SDMMC1_D1 |
| Broche 65 | PA8 — GPIO / TIM1_CH1 / MCO1 |
| Broche 66 | PA9 — GPIO / USART1_TX |
| Broche 67 | PA10 — GPIO / USART1_RX |
| Broche 68 | PA11 — GPIO / USB1_DM |
| Broche 69 | PA12 — GPIO / USB1_DP |
| Broche 70 | PA13 — GPIO / SWDIO (JTMS) |
| Broche 71 | VCAP_2 — Core voltage decoupling (1.0 V regulator output) |
| Broche 72 | VDD — Digital supply (1.62-3.6 V) |
| Broche 73 | PA14 — GPIO / SWCLK (JTCK) |
| Broche 74 | PA15 — GPIO / JTDI / TIM2_CH1 |
| Broche 75 | PC10 — GPIO / SDMMC1_D2 / USART3_TX |
| Broche 76 | PC11 — GPIO / SDMMC1_D3 / USART3_RX |
| Broche 77 | PC12 — GPIO / SDMMC1_CK |
| Broche 78 | PD0 — GPIO / CAN1_RX / FMC_D2 |
| Broche 79 | PD1 — GPIO / CAN1_TX / FMC_D3 |
| Broche 80 | PD2 — GPIO / SDMMC1_CMD / TIM3_ETR |
| Broche 81 | PD3 — GPIO / USART2_CTS |
| Broche 82 | PD4 — GPIO / USART2_RTS / FMC_NOE |
| Broche 83 | PD5 — GPIO / USART2_TX / FMC_NWE |
| Broche 84 | PD6 — GPIO / USART2_RX / FMC_NWAIT |
| Broche 85 | PD7 — GPIO / USART2_CK / FMC_NE1 |
| Broche 86 | PB3 — GPIO / JTDO / TIM2_CH2 |
| Broche 87 | PB4 — GPIO / JTRST / TIM3_CH1 |
| Broche 88 | PB5 — GPIO / I2C1_SMBAI / TIM3_CH2 |
| Broche 89 | PB6 — GPIO / I2C1_SCL / USART1_TX |
| Broche 90 | PB7 — GPIO / I2C1_SDA / USART1_RX |
| Broche 91 | BOOT0 — Boot mode selection |
| Broche 92 | PB8 — GPIO / I2C1_SCL / TIM4_CH3 |
| Broche 93 | PB9 — GPIO / I2C1_SDA / TIM4_CH4 |
| Broche 94 | PE0 — GPIO / TIM4_ETR |
| Broche 95 | PE1 — GPIO |
| Broche 96 | VSS — Ground reference |
| Broche 97 | VSS — Ground reference (additional) |
| Broche 98 | VSS — Ground reference (additional) |
| Broche 99 | VCAP_3 — Core voltage decoupling (1.0 V regulator output) |
| Broche 100 | VSS — Ground reference |
Applications typiques
STM32H7A3VIT6 convient pour 7 applications: Industrial Motor Drives, Human-Machine Interface (HMI) Panels, Professional Audio Interfaces and DSP, Factory Automation PLCs and Edge Gateways, Medical Diagnostic and Monitoring Equipment, Automotive Body and Comfort Modules, IoT Edge Devices with Secure Connectivity.
Industrial Motor Drives
The STM32H7A3VIT6 is a strong fit for industrial motor drives because its Cortex-M7 core runs at 280 MHz with hardware FMAC and CORDIC accelerators that offload field-oriented control (FOC) math. Engineers benefit from three 16-bit ADCs sampling up to 3.6 MSPS for simultaneous current/voltage sensing, plus HRTIM-style timers (per the STM32H7 peripheral set) for precise PWM generation. The 100-pin LQFP gives enough GPIO for multiple encoder/HALL inputs and CAN FD for drive networking. Designers migrating from F7 parts gain ~30 percent extra CPU headroom, allowing longer control loops or onboard condition monitoring.
Recommandé
Human-Machine Interface (HMI) Panels
For HMI panels, the STM32H7A3VIT6's integrated LTDC controller and Chrom-ART DMA2D engine drive TFT-LCD displays up to XGA without an external graphics controller. The 280 MHz Cortex-M7 with 1.4 MB total SRAM keeps frame buffers in on-chip memory for smoother UI animations and reduces external SDRAM cost. Hardware JPEG decode and the double-precision FPU accelerate image rendering pipelines. Verified ST product documentation highlights LTDC + DMA2D as key H7A3 differentiators against the H753 line.
Recommandé
Professional Audio Interfaces and DSP
Audio interfaces benefit from the STM32H7A3VIT6's Cortex-M7 DSP extensions, double-precision FPU, and SAI/SDMMC peripherals. At 280 MHz the part sustains multi-channel audio codecs at 192 kHz while running UI and USB streaming tasks. The 2 MB Flash stores firmware plus audio effects, and the ~1.4 MB SRAM allows large I/O buffers. Compared with the STM32F4 line, the H7A3 doubles headroom for reverb and EQ DSP, while keeping the same LQFP-100 footprint for layout reuse.
Recommandé
Factory Automation PLCs and Edge Gateways
Edge gateways and PLCs leverage the STM32H7A3VIT6's mix of high-speed communication peripherals: USB 2.0 High-Speed OTG, multiple CAN FD controllers, SDMMC for storage, and FMC for legacy parallel memory or FPGA links. The Cortex-M7's 280 MHz speed lets engineers run TLS, OPC UA PubSub, or lightweight container logic in parallel with deterministic control. Verified Mouser listings describe the H7A3 family as 'High-performance & DSP DP-FPU, Arm Cortex-M7 MCU 2MBytes of Flash 1376 KB SRAM', which aligns with edge-compute workloads.
Recommandé
Medical Diagnostic and Monitoring Equipment
Patient monitors and portable diagnostics require both deterministic processing and trustworthy security. The STM32H7A3VIT6 provides the Cortex-M7 with hardware crypto accelerators and TRNG, supporting secure boot and encrypted firmware updates. Three 16-bit ADCs at 3.6 MSPS are ideal for high-fidelity biosignal acquisition (ECG, SpO2, EEG), while the 2 MB Flash stores waveforms and reference data. The -40 C to +85 C industrial temperature range supports bedside and laboratory environments.
Recommandé
Automotive Body and Comfort Modules
For body controllers, HVAC modules, and lighting ECUs, the automotive-grade STM32H7A3VIT6Q variant offers AEC-Q100 qualification in the same 100-pin LQFP. Verified DigiKey listings confirm the 'Q' suffix part ships with the same die and 280 MHz clock, but adds -40 C to +125 C operation. CAN FD and the rich timer set (per the H7A3 peripheral map) handle body-network messaging and PWM-driven lighting. Using the non-Q version for non-automotive designs keeps the BOM cost down while retaining the same firmware base.
Recommandé
IoT Edge Devices with Secure Connectivity
IoT edge nodes benefit from the STM32H7A3VIT6's hardware crypto accelerators, TRNG, and secure-boot support, which are mandatory for OTA update integrity. The Cortex-M7 at 280 MHz runs TLS handshakes and on-device ML inference (CMSIS-NN) while still leaving headroom for sensor fusion. The 2 MB Flash accommodates OTA staging, and 1.4 MB SRAM keeps neural-network activations on-chip. The 100-pin LQFP exposes SDMMC and USB HS for high-throughput logging and provisioning.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32H7A3VIT6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32H7A3VIT6Q | STM32H7A3RIT6 | STM32H753XIH6 | STM32H745IIT6 | STM32F767IIT6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Core | ARM Cortex-M7 (single) | ARM Cortex-M7 (single) | ARM Cortex-M7 (single) | ARM Cortex-M7 (single) | ARM Cortex-M7 + Cortex-M4 (dual) | ARM Cortex-M7 (single) |
| Maximum Clock | 280 MHz | 280 MHz | 280 MHz | 280 MHz | 280 MHz | 216 MHz |
| Flash Memory | 2 MB | 2 MB | 64 KB | 2 MB | 2 MB | 2 MB |
| SRAM | ~1.4 MB | ~1.4 MB | ~1 MB | ~1 MB | ~1 MB | ~512 KB |
| Graphics (LTDC + DMA2D) | Yes | Yes | Yes | No | Yes | Yes |
| Ethernet MAC | No | No | No | Yes | Yes | Yes |
| Automotive Grade (AEC-Q100) | No | Yes (-40 C to +125 C) | No | No | No | No |
Principaux différenciateurs
- Highest-frequency single-core Cortex-M7 with LTDC graphics (vs STM32H753XIH6)
- Larger SRAM budget than the H745 dual-core variant in the same footprint (vs STM32H745IIT6)
- Doubles CPU headroom versus the STM32F7 generation (vs STM32F767IIT6)
Notes de conception
Decouple the four VDD/VDDA/VBAT rails with 100 nF X7R ceramics placed within 5 mm of each supply pin, plus a bulk 4.7 uF per rail. The internal SMPS (when present on the die) requires the VCAP_1/VCAP_2/VCAP_3 pins to be tied to a 2.2 uF low-ESR ceramic; inadequate capacitance is a common cause of brown-out resets at high dI/dt loads. Verified ST reference designs recommend 4.7 uF on VDD and a ferrite bead between VDD and VDDA if the analog rails must be quiet for ADC SNR.
Route the 100-pin LQFP (14x14) escape with 0.2 mm traces and 0.2 mm spacing; break out inner-row pins on the top layer with micro vias. Place a continuous ground pour on layer 2 below the package to give the SDRAM/USB reference planes a low-impedance return path. The USB DP/DM traces must be 90 ohm differential, length-matched within 150 mil, and free of stubs.
Do not leave BOOT0 floating: tie it to GND through a 10 k resistor for normal boot from Flash, or drive it high to enter the system bootloader for recovery. Field firmware updates that rely on secure boot must configure the option-byte OTP area before production; OTP writes are one-time-only. Finally, the LSE crystal requires a load capacitor matching its CL spec (typically 7 pF for ECS-3x8x crystals); mismatched capacitance drifts the RTC.
Informations de conformité
RoHS and REACH compliance confirmed via STMicroelectronics product page. Non-Q variant is not AEC-Q100 qualified; choose STM32H7A3VIT6Q for AEC-Q100. Halogen-free status not explicitly stated in verified web data.
