STM32H745ZIT6 - Dual-Core Cortex-M7/M4 MCU, 480MHz, 2MB Flash | STMicroelectronics
MPN: STM32H745ZIT6 ✓ NakahandaSTM32H745ZIT6 Ulas
A microcontroller (MCU) is a compact, self-contained computer on a single integrated circuit that combines a processor core, volatile and non-volatile memory, programmable peripherals, and bus fabric. The STM32 family is STMicroelectronics' 32-bit Arm Cortex-M portfolio, with the STM32H7 series occupying the high-performance tier that bridges MCU and application-processor territory. The H745 sub-family adds heterogeneous dual-core asymmetric multiprocessing (AMP), so heavy graphics and DSP work runs on the M7 while time-critical control loops run independently on the M4.
Key differentiating features include 480 MHz Cortex-M7 with double-precision FPU, 240 MHz Cortex-M4 with single-precision FPU, 2 MB dual-bank Flash for live firmware updates, 1 MB SRAM split across DTCM, AXI SRAM, and SRAM1-4 domains, and an extensive peripheral set including Ethernet, USB 2.0 HS, CAN-FD, SDMMC, three 12-bit ADCs up to 3.6 MSPS, two 12-bit DACs, and TFT LCD interface. Operating voltage spans 1.62 V to 3.6 V with multiple low-power modes (D1 Stop, Standby, VBAT) for energy-constrained designs.
Architecturally, the device is built on ST's 40 nm low-power process and uses a multilayer AHB/APB bus matrix plus an AXI-to-DTCM bridge so each core can fetch zero-wait-state from its private TCM. The Cortex-M7 issues single-precision and double-precision floating-point instructions natively, while the Cortex-M4 handles real-time control and housekeeping. Dedicated DMA controllers (MDMA, DMA1/DMA2) keep peripherals fed without CPU intervention, enabling overlapped computation and data movement.
Typical applications include industrial motor control and field-oriented drive (FOD) inverters, smart-home gateways with embedded graphics, audio processing and effects units, advanced HMI panels, factory automation PLCs, and high-end consumer devices requiring simultaneous DSP and GUI work. The dual-core split makes it a strong fit for protocols stacks (M4) plus UI/DSP (M7) architectures.
When designing with this device, allocate decoupling capacitance close to every VDD/VDDA/VBAT pin and place the four-layer break-out symmetric around the exposed pad to dissipate the M7's dynamic power. Use the ST MC SDK for motor control and STM32CubeIDE plus TouchGFX for HMI development, and respect the boot pin strapping for Flash boot versus system memory bootloader. Cross-check VCAP pins with the reference schematic to avoid reset instability.
Mga alternatibo na pwedeng ilagay na STM32H745ZIT6 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok STM32H745ZIT6 (parehas na form factor at footprint) — pagkakaiba sa Operating Temperature, SRAM, Package, Communication Interfaces, ADC.
STM32H755ZIT6
✅ Drop-In✗ Wala sa Stock
$16.19 / Yunit
Tingnan ang Datasheet →STM32H743ZIT6
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo✓ Sa Stock
$10.65 / Yunit
Tingnan ang Datasheet →STM32H747ZIT6
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →STM32H757ZIT6
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
STM32F767ZIT6
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo✗ Wala sa Stock
$17.6 / Yunit
Tingnan ang Datasheet →STM32H745ZIT6 Mga Pinakamataas na Rating at Electrical Characteristics
| Core Architecture | Arm Cortex-M7 + Cortex-M4 dual-core (32-bit) |
| Cortex-M7 Max Frequency | 480 MHz |
| Cortex-M4 Max Frequency | 240 MHz |
| FPU (M7) | Double-precision |
| FPU (M4) | Single-precision |
| Program Flash | 2 MB (dual-bank) |
| SRAM | 1 MB (DTCM + AXI SRAM + SRAM1-4) |
| Operating Voltage | 1.62 V to 3.6 V |
| Packhaging | 144-pin LQFP (20x20 mm, 0.5 mm pitch) |
| Temperature na Operasyon | -40 C to +85 C (industrial grade 6) |
| I/O Pins | 97 user I/Os |
| ADC | 3x 12-bit, up to 3.6 MSPS, 23 channels |
| DAC | 2x 12-bit |
| Communication Interfaces | Ethernet, USB 2.0 HS, CAN-FD, SDMMC, UART, SPI, I2C |
| Graphics Accelerator | Chrom-ART + hardware JPEG codec |
| Cryptographic Accelerator | AES, Hash, TRNG |
| Tindminan RoHS | Compliant |
| Uri ng Pagpapasok | Surface Mount |
Gabay sa Pin Configuration ng STM32H745ZIT6 144-pin lqfp (20x20 mm, 0.5 mm pitch)
Pin configuration para sa STM32H745ZIT6 (144-pin lqfp (20x20 mm, 0.5 mm pitch) package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa STM32H745ZIT6.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
STM32H745ZIT6 ay nararapat para sa 6 aplikasyons: Industrial Motor Control and FOC Inverters, Advanced Human-Machine Interface (HMI) Panels, Audio DSP and Effects Processing, Smart Home Gateway and IoT Edge, Robotics and Motion Controllers, Industrial PLC and Factory Automation.
Industrial Motor Control and FOC Inverters
The STM32H745ZIT6 fits industrial motor control because its Cortex-M4 core at 240 MHz deterministically executes field-oriented control loops at 20-50 kHz updates while the Cortex-M7 at 480 MHz runs sensorless observers, MTPA flux-weakening, and predictive maintenance analytics on top of the same chip. The 1 MB SRAM absorbs observer state arrays and decoupled DC bus compensation tables without external memory, keeping the design single-package. Hardware floating-point on both cores removes integer-math penalties for sine/cosine and Park transforms. ST's MC SDK 6.x supports this exact dual-core split on LQFP-144 hardware.
Inirekomenda
Advanced Human-Machine Interface (HMI) Panels
The STM32H745ZIT6 is ideal for advanced HMI panels because the Chrom-ART 2D graphics accelerator offloads rectangle fill, copy, and blend operations from the Cortex-M7, freeing CPU cycles for LVGL/TouchGFX rendering at 60 fps on TFT LCDs up to XGA resolution. The hardware JPEG codec decodes camera previews directly into the LTDC framebuffer, while the Cortex-M4 manages capacitive touch scanning and debounce deterministically. Three SPI plus one FMC interface allow simultaneous display, touch controller, and external Flash connection on the LQFP-144 pinout.
Inirekomenda
Audio DSP and Effects Processing
The STM32H745ZIT6's Cortex-M7 at 480 MHz single-precision FPU delivers roughly 1 GFLOP for audio biquad cascades, reverb convolution, and FFT visualization, easily running 48 kHz multi-channel processing with headroom. The Cortex-M4 handles MIDI and USB-Audio class housekeeping offloaded from the audio path, ensuring glitch-free streaming. Two 12-bit DACs and SAI peripherals provide direct connection to audio codecs, while 1 MB of AXI SRAM holds sample buffers and FFT windows without external SDRAM for many use cases.
Inirekomenda
Smart Home Gateway and IoT Edge
The STM32H745ZIT6 serves smart-home gateways well because the Ethernet MAC plus USB 2.0 HS plus CAN-FD peripherals give multi-protocol connectivity (Matter/Thread/Zigbee co-processors over serial, plus wired Ethernet backhaul) without external bus controllers. The Cortex-M7 runs TLS, MQTT, and local rules engines on FreeRTOS or Azure RTOS while the Cortex-M4 stays in low-power modes waking only on sensor interrupts. The hardware AES (STMicroelectronics H745 lacks crypto - migrate to H755 if TLS handshake in hardware is required) and TRNG support secure identity provisioning.
Inirekomenda
Robotics and Motion Controllers
The STM32H745ZIT6 fits robotics motion controllers because eight general-purpose timers plus advanced timers can drive PWM outputs for up to 8 axes of brushless DC or stepper control, with QEI feedback latched deterministically by the Cortex-M4. The Cortex-M7 simultaneously runs inverse kinematics, trajectory planning, and vision pre-processing on incoming camera frames piped through DCMI. Ethernet and CAN-FD enable industrial field-bus connectivity (EtherCAT slave at 100 Mbit/s via SPI-Ethernet bridge, CANopen, Modbus). The 480/240 MHz asymmetric split is industry-standard for AMR (autonomous mobile robot) main controllers.
Inirekomenda
Industrial PLC and Factory Automation
The STM32H745ZIT6 suits industrial PLCs because its deterministic Cortex-M4 executes IEC 61131-3 logic scan at fixed cycle times (1-10 ms typical) with zero impact from the Cortex-M7's higher-priority graphics, networking, or data logging workloads running in parallel. Hardware floating-point on the M7 handles PID loops, autotuning, and analytics without consuming integer resources. The 1 MB of SRAM and 2 MB Flash absorb ladder-logic compiled applications plus web server stacks without external memory, even on the LQFP-144 footprint. ST's X-CUBE-PLC SDK targets this exact use case on H745 silicon.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for STM32H745ZIT6 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | STM32H755ZIT6 | STM32H743ZIT6 | STM32H747ZIT6 | STM32F767ZIT6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | LQFP-144 (20x20 mm) | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same |
| Core Architecture | M7 + M4 dual-core | M7 + M4 dual-core (with crypto) | M7 single-core | M7 + M4 dual-core | M7 single-core (lower speed) |
| Max Frequency | 480 / 240 MHz | 480 / 240 MHz - same | 480 MHz (single) | 480 / 240 MHz - same | 216 MHz - lower |
| Flash Memory | 2 MB dual-bank | 2 MB dual-bank - same | 2 MB dual-bank - same | 2 MB dual-bank - same | 2 MB - same |
| SRAM | 1 MB | 1 MB - same | 1 MB - same | 1 MB - same | 512 KB - smaller |
| Crypto Accelerator | No (software only) | Yes (AES, Hash, TRNG) | No | No | No |
| Chrom-ART + JPEG Codec | Yes | Yes - same | Yes - same | Yes - same | Yes (subset) |
Pangunahing mga Pagkakaiba
- True dual-core asymmetric multiprocessing in LQFP-144 (kumpara saSTM32H743ZIT6)
- Cost-optimized vs. crypto-rich H755 in same footprint (kumpara saSTM32H755ZIT6)
- 2 MB dual-bank Flash for live firmware updates (kumpara saSTM32F767ZIT6)
Talaan ng Disenyo
Estimated at M7@480 MHz, M4@240 MHz, both cores active in run mode, VDD=3.3 V, the STM32H745ZIT6 consumes approximately 250 mA per core (per ST RM0399 dynamic consumption tables at 25 C). Provide at least four 100 nF X7R bypass capacitors within 5 mm of each VDD/VDDA/VBAT pin plus a 4.7 uF bulk cap on the 3.3 V rail. The four VCAP pins (VCAP_1, VCAP_2, VCAP_A, VCAP_D) each require a 2.2 uF low-ESR ceramic to GND, placed as close as possible per the reference schematic - do not omit, as missing VCAP caps cause reset and boot instability.
Estimated worst-case total power at full dual-core utilization with all peripherals active approaches 1.5 W. The LQFP-144 package has typical theta_JA of 30 C/W on a 4-layer PCB, yielding a 45 C junction-temperature rise above 25 C ambient (per package thermal profile). At an 85 C ambient ceiling this leaves only ~40 C margin - the part remains within its 125 C junction spec but requires real copper area (at least 1 cm^2 internal ground plane stitched under the package) and possibly airflow for continuous dual-core 100 % workloads.
The LQFP-144 (20x20 mm) demands 144 hand-routable pins on 0.5 mm pitch - feasible on a 4-layer PCB with 0.2 mm traces. Route crystal (HSE) traces within 10 mm of the OSC_IN/OSC_OUT pins with a guard ring to analog ground to avoid jitter. ETH RMII traces must be length-matched within 1 cm; place the 50 MHz RMII reference clock next to the ETH peripheral. The boot pin strap (BOOT0 + nBOOT0/nBOOT1) should be tied either to GND (Flash boot) or to a 1 M-ohm pull-up (system bootloader) with options clearly accessible for DFU on production benches.
Common pitfalls on the STM32H745ZIT6 include: (1) omitting any of the four VCAP caps, causing intermittent reset failures - the datasheet specifies 2x 2.2 uF capacitors tied per the schematic, not 1 capacitor; (2) wrong mapping of alternate-function pins (e.g. using PB3/PB4 as GPIO without remapping JTAG) - check the pinout table in the datasheet for AF assignments; (3) failing to enable both cores' separate vector tables in the linker file for AMP mode; (4) using the legacy HAL without the dual-core inter-processor mailbox (HSEM/Mailbox driver) causing M4 not to start after M7 boot.
Impormasyon ng Pagsunod sa Kautusan
RoHS and REACH compliant per ST product page; not AEC-Q100 qualified (this is the industrial-grade temperature variant).
