STMicroelectronics - STM32G081RB

The STM32G081xB mainstream microcontrollers are based on high-performance Arm® Cortex®-M0+ 32-bit RISC core operating at up to 64 MHz frequency. Offering a high level of integration, they are suitable for a wide range of applications in consumer, industrial and appliance domains and ready for the Internet of Things (IoT) solutions.

The devices incorporate a memory protection unit (MPU), high-speed embedded memories (up to 128 Kbytes of Flash program memory and 36 Kbytes of SRAM), DMA and an extensive range of system functions, enhanced I/Os and peripherals. The devices offer standard communication interfaces (two I2Cs, two SPIs / one I2S, one HDMI CEC and four USARTs), one 12-bit ADC (2.5 MSps) with up to 19 channels, one 12-bit DAC with two channels, two fast comparators, an internal voltage reference buffer, a low-power RTC, an advanced control PWM timer running at up to double the CPU frequency, five general-purpose 16-bit timers with one running at up to double the CPU frequency, a 32-bit general-purpose timer, two basic and two low-power 16-bit timers, two watchdog timers, and a SysTick timer. The STM32G081xB devices provide a fully integrated USB Type-C Power Delivery controller.

The devices embed AES hardware accelerator and true random number generator (RNG).

The devices operate within ambient temperatures from -40 to 125°C. They can operate with supply voltages from 1.7 V to 3.6 V. Optimized dynamic consumption combined with a comprehensive set of power-saving modes, low-power timers and low-power UART, allows the design of low-power applications.

VBAT direct battery input allows keeping RTC and backup registers powered.

The devices come in packages with 28 to 64 pins.


  • Core: Arm® 32-bit Cortex®-M0+ CPU, frequency up to 64 MHz
  • -40°C to 85°C/125°C operating temperature
  • 128 Kbytes of Flash memory
  • Up to 60 fast I/Os
  • 7-channel DMA controller with flexible mapping
  • 12-bit, 0.4 μs ADC (up to 16 ext. channels)
  • Two 12-bit DACs, low-power sample-and-hold
  • USB Type-C™ Power Delivery controller
  • AES: 128/256-bit key encryption hardware accelerator
  • 96-bit unique ID
  • All packages ECOPACK®2 compliant
STMicroelectronics  STM32G081RB


  • Motor control
  • Advanced control

Block diagram

STMicroelectronics  STM32G081RB



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