ARM Cortex-M4 180 MHz · 2MB Flash · 256KB SRAM · UFBGA-176 · PX4 Pixhawk 2 Primary Flight Controller MCU
| Part Number | STM32F427IIH6 |
|---|---|
| Manufacturer | STMicroelectronics |
| Core | ARM Cortex-M4 with FPU (Single Precision) |
| Max Frequency | 180 MHz |
| Flash Memory | 2 MB (2,097,152 bytes) |
| SRAM | 256 KB (includes 64KB CCM) |
| Package | UFBGA-176 (10×10mm, 0.65mm pitch) |
| Supply Voltage | 1.8 V – 3.6 V |
| Operating Temperature | −40°C to +85°C (Industrial) |
| GPIO Pins | 140 (5V tolerant I/O) |
| RoHS Compliant | Yes |
| Debug Interface | SWD / JTAG / ETM Trace |
| Supply Voltage (VDD) | 1.8 V – 3.6 V |
|---|---|
| Supply Voltage (VBAT) | 1.65 V – 3.6 V |
| I/O Voltage | 3.3 V (5V tolerant on most pins) |
| Max Current (I/O pin) | 25 mA per pin |
| Run Mode Current (180MHz) | ~110 mA typical (Please confirm with manufacturer datasheet) |
| Stop Mode Current | ~8 µA (Please confirm with manufacturer datasheet) |
| Standby Mode Current | ~2.8 µA (Please confirm with manufacturer datasheet) |
| ADC Resolution | 12-bit, 3× ADC, 24 channels |
| DAC | 12-bit, 2× DAC |
| Timers | 2× advanced, 12× general purpose, 2× basic |
| UART / USART | 8× (up to 10.5 Mbit/s) |
|---|---|
| SPI | 6× SPI (up to 45 Mbit/s) |
| I²C | 3× I²C (Fast mode, 400 kHz) |
| USB OTG | 1× USB 2.0 FS + 1× USB 2.0 HS with ULPI |
| CAN | 2× CAN 2.0B |
| SDIO | 1× (for SD/MMC cards) |
| DMA | 2× DMA controllers, 8 streams each |
| Ethernet MAC | 10/100 Mbit/s with dedicated DMA |
| DCMI | 1× Digital Camera Interface |
| FSMC | Flexible Static Memory Controller for SRAM/NOR/NAND/LCD |
| Part Number | STM32F427IIH6 |
|---|---|
| Orderable Qty | 1 pcs – 10,000+ pcs |
| Price (1–9 pcs) | Contact for quote |
| Price (10–99 pcs) | Contact for quote |
| Price (100–499 pcs) | Contact for quote |
| Price (500+ pcs) | Best pricing available |
| Lead Time (stock) | 3–7 business days |
| Packaging | Tray (BGA) |
| Export Control | EAR99 (No license required) |
The STM32F427IIH6 is a premium ARM Cortex-M4 microcontroller from STMicroelectronics clocked at 180 MHz with a single-precision FPU and full DSP instruction set. It features 2MB of dual-bank Flash memory and 256KB of SRAM (including 64KB of CCM), housed in a compact UFBGA-176 package measuring just 10×10mm. This is the official primary MCU for the PX4 Pixhawk 2 (Cube) autopilot platform, representing the most widely deployed professional-grade flight controller ecosystem in the UAV industry.
The STM32F427 brings several critical upgrades over the F405 series: a faster 180 MHz core clock, twice the Flash memory (2MB vs 1MB), 33% more SRAM, integrated 10/100 Ethernet MAC with dedicated DMA, and a richer peripheral set including 8× USART and 6× SPI ports. The dual-bank Flash architecture enables safe firmware updates with rollback capability — essential for mission-critical UAV platforms where an interrupted update must not brick the autopilot mid-mission.
The UFBGA-176 package provides an impressive 140 GPIO pins while occupying minimal PCB area, enabling dense routing for carrier boards that integrate dual IMUs, triple redundant barometers, external magnetometers, and multiple telemetry radios. The integrated Ethernet MAC allows direct connection to companion computers like Raspberry Pi or NVIDIA Jetson for advanced vision-based navigation and AI-driven autonomy. The F427 series remains the benchmark for professional UAV autopilots, fully supported by ArduPilot, PX4, and all major open-source flight stacks.
Contact UAVCHIP for competitive volume pricing. Global DHL/FedEx shipping, 3–7 day lead time on stocked inventory.
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