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STMicroelectronics STM32F429IIT6J — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F429IIT6J STM32F4 ARM Cortex-M4 MCU, 180MHz, 2MB Flash

MPNSTM32F429IIT6J
Obsolete

STMicroelectronics STM32F4 series STM32F429IIT6J, ARM Cortex-M4 32-Bit Single-Core MCU, 180MHz, 2MB Flash, 256K x 8 RAM, 176-LQFP, -40°C to 85°C.

$19.5800Ref. price · indicative, final on quote
STMicroelectronics STM32F429IIT6J datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F429IIT6J 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

For a graphics-heavy HMI with a parallel TFT display, the 2 MB Flash holds a full frame buffer and UI assets, while the 256 KB SRAM leaves headroom for stack and dynamic data. The Ethernet and CAN interfaces suit industrial gateways or multi-protocol bridges where the MCU runs the protocol stack and application logic on one die.

The 176-LQFP (24x24 mm) is a standard JEDEC footprint with 0.5 mm pitch. It is a surface-mount package that reflows with typical lead-free profiles. The 140 I/O pins fan out to four sides, so the PCB layout needs a solid ground plane and adequate decoupling close to each supply pair.

Frequently asked questions

What is STM32F429IIT6J's listed speed?

The core is rated at 180 MHz, which is the maximum clock frequency for the ARM Cortex-M4 processor in this device.

What is the difference between STM32F429IIT6 and STM32F429IIT6J?

The suffix 'J' typically indicates a specific revision or package variant within the STM32F429 series. Both share the same base product number STM32F429, 2 MB Flash, 256 KB RAM, and 176-LQFP package. The exact difference (e.g., die revision, temperature range, or silicon stepping) is detailed in the STMicroelectronics errata sheet and datasheet revision history — the evidence here does not carry the delta.