STMicroelectronics STM32C031G4U3

The STM32C031x4/x6 mainstream microcontrollers are based on high-performance Arm^® Cortex^®-M0+ 32-bit RISC core operating at up to 48 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 (12 Kbytes of SRAM and up to 32 Kbytes of flash program memory with read and write protection), DMA, an extensive range of system functions, enhanced I/Os, and peripherals. The devices offer standard communication interfaces (one I²Cs, one SPI / one I²S, and two USARTs), one 12-bit ADC (2.5 MSps) with up to 21 channels, a low-power RTC, an advanced control PWM timer, four general-purpose 16-bit timers, two watchdog timers, and a SysTick timer.

The devices operate within ambient temperatures from -40 to 125°C and with supply voltages from 2.0 V to 3.6 V. Optimized dynamic consumption combined with power-saving modes allows the design of low-power applications.

The devices are housed in packages with 20 to 48 pins.

• Includes ST state-of-the-art patented technology
• Core: Arm^® 32-bit Cortex^®-M0+ CPU, frequency up to 48 MHz
  
• -40°C to 85°C/105°C/125°C operating temperature
• Memories
  • Up to 32 Kbytes of flash memory with protection
  • 12 Kbytes of SRAM with hardware parity check
• CRC calculation unit
• Reset and power management
  • Voltage range: 2.0 V to 3.6 V
  • Power-on / power-down reset (POR/PDR)
  • Programmable brownout reset (BOR)
  • Low-power modes:Sleep, Stop, Standby, Shutdown
• Clock management
  • 4 to 48 MHz crystal oscillator
  • 32 kHz crystal oscillator with calibration
  • Internal 48 MHz RC oscillator (±1 %)
  • Internal 32 kHz RC oscillator (±5 %)
• Up to 45 fast I/Os
  • All mappable on external interrupt vectors
  • All 5 V-tolerant
• 3-channel DMA controller with flexible mapping
• 12-bit, 0.4 µs ADC (up to 19 ext. channels)
  • Conversion range: 0 to 3.6 V
• 8 timers: 16-bit for advanced motor control, four 16-bit general-purpose, two watchdogs, SysTick timer
• Calendar RTC with alarm
• Communication interfaces
  • One I²C-bus interface supporting Fast-mode Plus (1 Mbit/s) with extra current sink; supporting SMBus/PMBus™ and wake-up from Stop mode
  • Two USARTs with master/slave synchronous SPI; one supporting ISO7816 interface, LIN, IrDA capability, auto baud rate detection and wake-up feature
  • One SPI (24 Mbit/s) with 4- to 16-bit programmable bitframe, multiplexed with I²S interface; two extra SPIs through USARTs
• Development support: serial wire debug (SWD)
• All packages ECOPACK 2 compliant