STM32F439IIH7

The STM32F439IIH7 is a mid-to-high end MCU in ST’s STM32F4 family. It uses a 32‑bit ARM Cortex‑M4 core with a floating‑point unit and DSP instructions, running up to about 180 MHz, with on‑chip Flash and RAM (variants vary). Key features commonly supported on this device family include USB 2.0 full‑speed/OTG, CAN, SDIO; extensive serial interfaces (SPI, I2C, I2S, UART/USART); multiple timers; ADCs (12‑bit) and DACs; DMA; external memory interfaces (FMC/SDRAM); and graphics/camera support via an LCD‑TFT controller and DCMI. It also provides memory protection, crypto acceleration on some variants, and a range of power modes. The IIH7 suffix denotes a particular package (pin count) and temperature grade; check the datasheet for exact specs. Software support includes STM32CubeMX/HAL/LL libraries and standard toolchains (Keil, IAR, GCC). Common use cases: motor control, human‑machine interfaces, display/graphics, and industrial/autonomous applications.

Here are the key features of STM32F439IIH7 (F439 family):
- CPU: ARM Cortex-M4F core with single-precision FPU and DSP instructions, up to 180 MHz
- Memory: up to 2 MB Flash; up to 256 KB SRAM
- Graphics/Display: LCD-TFT controller (24-bit color) and DMA2D graphics accelerator
- Peripherals: USB OTG FS, CAN, SDIO; multiple I2C, SPI, and USART/UART interfaces; ADCs (12-bit) and DACs
- Memory interfaces: FSMC external memory interface and Quad-SPI
- Timers: advanced-control and general-purpose timers with PWM capabilities
- Embedded features: CRC engine for data integrity
- Power: operates from 1.65 V to 3.6 V with multiple low-power modes (sleep/stop/standby)
- Packaging: available in ST’s typical LQFP/BGA options (II/H7 variants indicate specific package/pinout)
Note: exact memory sizes, peripherals counts, and package options can vary by device variant and package; refer to the datasheet for precise configuration.

- Pin count: 176 pins (LQFP-176 package).
- Function: 32-bit ARM Cortex-M4 microcontroller (ST STM32F439 family) with on-chip Flash/SRAM and peripherals, suitable for embedded control (up to ~180 MHz).

- Manufacturer: STMicroelectronics (ST)
- Kind of company: A multinational semiconductor and electronics company that designs and manufactures microcontrollers (including STM32), sensors/MEMS, power devices, and other ICs. Headquartered in Geneva, Switzerland; publicly traded on NYSE, Euronext Paris, and Borsa Italiana.

STM32F439IIH7 is a high‑performance Cortex‑M4 MCU with LCD‑TFT controller, Ethernet, USB OTG, CAN, DSP, and rich peripherals. Common applications include:
- HMI panels and graphic LCD/touch displays
- Industrial automation and motor control
- Medical devices and portable instrumentation
- Consumer electronics and smart home appliances
- IoT gateways and edge devices
- Audio/video systems (I2S/SAI, DAC)
- Data acquisition and instrumentation
- Embedded GUI and camera/interface (DCMI) designs

LQFP-100 package (14×14 mm, 0.5 mm pitch).