Specifications
Part NumberSTM32G431CBU6
ManufacturerSTMicroelectronics
CoreARM Cortex-M4+ with FPU
Max Frequency170 MHz
Flash Memory128 KB
SRAM64 KB
PackageUFQFPN-48 (6×6mm, 0.4mm pitch)
Supply Voltage2.0 V – 3.6 V
Operating Temperature−40°C to +85°C (up to +125°C option)
GPIO Pins38
RoHS CompliantYes
Supply Voltage2.0 V – 3.6 V
I/O Voltage3.3 V (5V tolerant)
Power Consumption~70 mA at 170 MHz typical
Sleep Mode~2 µA (STOP mode)
ADC12-bit, up to 16 channels
DAC12-bit, 2× DAC with voltage references
Comparators4× high-speed comparators
UART / USART3× (up to 10 Mbit/s)
SPI / I²S2× / 1× I²S
I²C2× I²C (Fast mode+)
CAN FD1× CAN FD
USB1× USB 2.0 Full Speed
HRTIM6-channel, 200 ps resolution
DebugSWD / JTAG
Part NumberSTM32G431CBU6
Order Qty1 pcs – 10,000+ pcs
Lead Time3–7 business days
PackagingTray / Tape & Reel
Export ControlEAR99
Product Description

The STM32G431CBU6 is a compact and cost-effective ARM Cortex-M4+ microcontroller from STMicroelectronics' G4 series, operating at up to 170 MHz with FPU and DSP instructions. It features 128KB of Flash and 64KB of SRAM in a space-saving UFQFPN-48 package (6×6mm). The G4 series brings HRTIM, advanced analog, and CAN FD to a small package ideal for compact drone ESCs and FC boards.

Key Features

  • 170 MHz Cortex-M4+ with FPU and DSP instructions
  • 128KB Flash + 64KB SRAM
  • Compact UFQFPN-48 package (6×6mm)
  • HRTIM: 6 channels, 200 ps resolution for motor control
  • Advanced analog: 12-bit ADC, 4× comparators, 2× op-amps
  • Rich comms: 3× UART, 2× SPI, 2× I²C, CAN FD
UAV Applications
Whoop ESC
Single-chip BLDC ESC for 1S Whoop drones in UFQFPN-48
Tiny FC
Ultra-compact flight controller for 2–3 inch racing drones
Micro Gimbal
3-axis gimbal controller for compact action cameras
Sensor Hub
Dedicated sensor fusion processor for multi-chip FC designs
Similar Products (Flight Controller MCU)
Alternative / Drop-in Parts
Related Components (Used Together)
FAQ
What flight controller firmware supports STM32G431CBU6?
The STM32G431CBU6 from STMicroelectronics is compatible with Betaflight, iNav, and ArduPilot depending on the specific flight controller board. Check our blog for board-specific firmware compatibility.
What is the recommended operating voltage?
The STM32G431CBU6 operates from 1.8V to 3.6V (or 2.0V–3.6V depending on variant). Most FC boards include onboard LDOs to regulate from a 2S–6S LiPo battery.
Is this component in stock and what is the lead time?
In Stock at UAVCHIP. Standard lead time is 3–7 business days for small quantities. Contact us for bulk pricing and longer lead times on larger orders.

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