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STMicroelectronics STM32F439IIT6V — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F439IIT6V STM32F4 MCU, 180MHz Cortex-M4, 2MB Flash, 176-LQFP

MPNSTM32F439IIT6V
End of Life

STMicroelectronics STM32F4 series, 32-bit ARM Cortex-M4 single-core MCU at 180MHz, 2MB Flash, 256KB SRAM, 140 I/O, Ethernet MAC, USB OTG, CAN, 24×12-bit ADC, 2×12-bit DAC, 176-LQFP tray package, -40°C to 85°C operating temperature, 1.8V to 3.6V supply.

$18.0426Ref. price · indicative, final on quote
STMicroelectronics STM32F439IIT6V datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F439IIT6V specifications
ParameterValue
SeriesSTM32F4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed180MHz
PackageTray
RAM size256K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG
Number of i (O)140
Core processorARM® Cortex®-M4
Case176-LQFP
Data convertersA/D 24x12b; D/A 2x12b
Program memory size2MB (2M x 8)

Product details

The STMicroelectronics STM32F439IIT6V is a 32-bit ARM Cortex-M4 single-core MCU running at 180MHz, with 2MB of Flash program memory and 256KB of SRAM. It packs 140 I/O lines, an Ethernet MAC, USB OTG, CANbus, and a rich set of serial interfaces including SPI, I²C, and UART. The part is built for industrial control, motor drives, and communication gateways that need DSP-capable floating-point processing and a wide peripheral set in a single chip.

180 MHz — timing margin for real-time loops

The Cortex-M4 core runs at 180 MHz. The 2 MB Flash provides firmware space for an RTOS and application code.

EOL status — sourcing reality

Frequently asked questions

What is the maximum operating temperature of STM32F439IIT6V?

The operating temperature range is -40°C to 85°C (TA). That is an industrial-grade rating, not extended or automotive.

Is STM32F439IIT6V RoHS compliant?

The evidence does not carry a RoHS compliance statement. The part is lead-free in the LQFP package per standard STM32F4 practice; verify the specific date-code certificate at quote time.

How to program STM32F439IIT6V?

Programmed via the standard STM32 serial-wire debug (SWD) or JTAG interface using ST-Link or third-party debug probes. The 2 MB Flash is partitioned for bootloader, application, and field-update slots.