STM32H745XIH3

STMicroelectronics

STMicroelectronics STM32H7 series, STM32H745XIH3, 32-Bit Dual-Core ARM Cortex-M4/M7, 240MHz, 480MHz, 2MB Flash, 1M x 8 RAM, 168 I/O, CANbus, Ethernet, USB OTG, -40°C~125°C, 265-TFBGA.

STMicroelectronics STM32H745XIH3
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Technical specifications

STM32H745XIH3 specifications
Parameter / AttributeSpecification / Value
SeriesSTM32H7
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.62V ~ 3.6V
Operating temperature-40°C~125°C(TA)
Speed240MHz, 480MHz
PackageTray
RAM size1M x 8
Core size32-Bit Dual-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, MDIO, MMC/SD/SDIO, QSPI, SAI, SPDIF, SPI, SWPMI, UART/USART, USB OTG
Number of i (O)168
Core processorARM® Cortex®-M4/M7
Case265-TFBGA
Data convertersA/D 36x16b; D/A 2x12b
Program memory size2MB (2M x 8)

Technical details

Dual-core compute for mixed-criticality control

The STM32H745XIH3 is a 32-bit dual-core microcontroller from STMicroelectronics' STM32H7 series, pairing a 240 MHz ARM Cortex-M4 with a 480 MHz ARM Cortex-M7 on a single die. This asymmetric architecture lets you run a real-time control loop on the M4 while the M7 handles heavy signal processing or communications stack — no shared-core contention. The 2 MB Flash and 1 MB RAM give enough headroom for a combined application without external memory in many cases.

Connectivity and peripheral density

The 36-channel 16-bit ADC and dual 12-bit DAC cover analog front-end tasks without an external converter.

Housed in a 265-ball TFBGA (14x14 mm), the 240+25-ball footprint demands a multi-layer PCB with via-in-pad or microvia capability for signal breakout. This is not a hand-solderable package — plan for reflow assembly and X-ray inspection.

STM32H745XIH3
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