Skip to main content
Log in
STMicroelectronics STM32H7B3IIT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32H7B3IIT6 ARM Cortex-M7 MCU, 280 MHz, 2 MB Flash

MPNSTM32H7B3IIT6
Active

STMicroelectronics STM32H7 series, ARM Cortex-M7 32-bit Single-Core MCU, 280MHz, 2MB Flash, 1.4M x 8 RAM, 176-LQFP, -40°C to 85°C.

$14.7694Ref. price · indicative, final on quote
STMicroelectronics STM32H7B3IIT6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32H7B3IIT6 specifications
ParameterValue
SeriesSTM32H7
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.62V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed280MHz
PackageTray
RAM size1.4M x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
ConnectivityCamera, CANbus, EBI/EMI, HDMI-CEC, I²C, IrDA, LINbus, MDIO, MMC/SD/SDIO, PSSI, SAI, SPDIF, SPI, SWPMI, UART/USART, USB OTG
Number of i (O)119
Core processorARM® Cortex®-M7
Case176-LQFP
Data convertersA/D 20x16b; D/A 3x12b
Program memory size2MB (2M x 8)

Product details

The STM32H7B3IIT6: The 176-LQFP package provides 119 I/O and peripherals including dual CAN-FD, USB OTG, Ethernet, and a parallel camera interface, on a single supply rail from 1.62 V to 3.6 V.

1.4 MB RAM — staging area for display and data

The 1.4 MB RAM can hold a full frame buffer for a 480x272 RGB display at 16-bit colour and still leave over a megabyte for application data and communication stacks.

If you're building a panel controller or a medical peripheral with a five-year production run, this part fits without the supply chain headache of an NRND part.

Pin-compatible family members — what to cross-shop

The STM32H7B3IIT6 shares the 176-LQFP footprint with other STM32H7 devices. The H7B3 runs at 280 MHz with 2 MB Flash and 1.4 MB RAM.

Frequently asked questions

What is the maximum clock speed of the STM32H7B3IIT6?

The core is rated at 280 MHz. That is the maximum clock for the ARM Cortex-M7 core on this device. The PLL can be configured from an external or internal oscillator; the Flash memory requires wait states above a certain frequency, so factor that into your clock tree setup.

Is the STM32H7B3IIT6 compatible with the STM32H743?

Yes, they share the same 176-LQFP package and supply voltage range. The H743 runs at 400 MHz with 1 MB RAM; the H7B3 runs at 280 MHz with 1.4 MB RAM. A PCB laid out for one can take the other with a firmware change and a BOM line swap — no board respin needed.