Cores
-32-bit ARM®Cortex®-M0 CPU
-Up to 48 MHz operating frequency
Memory
-32K KB flash memory
-4 KB SRAM with hardware parity check
Clock module
-Internal 8 MHz RC oscillator (HRC), ±1% accuracy in typical cases
-Internal 14 MHz RC oscillator (HRC14) with ±1% accuracy in typical cases
-Internal 40 kHz RC oscillator (LRC), ±10% accuracy in typical cases
-4~32 MHz crystal oscillator (HXT)
-x2, x3,... x16 phase-locked loop (PLL), up to 48 MHz
Operating Environment
-VDD voltage: 2.0~5.5 V
-VDDA voltage: 2.0~5.5 V /
-Temperature range:-40~105 ℃
Boot method
-Supports boot from flash memory
-Supports boot from system memory
-Supports booting from internal SRAM
Power Management
-Low power consumption modes: sleep, deep sleep 1, deep sleep 2 and power down mode
-Supports power-on/power-off reset (POR/PDR)
-Supports Low Voltage Detection (LVD)
General purpose input/output (I/O)
-27 I/Os supports up to 48 MHz operating frequency
-All I/Os map external interrupt vectors
Analog-to-digital converter (ADC)
-1 channel 12-bit ADC
-Up to 1us conversion time
-Supports 10 external input channels
-Operating voltage range: 2.4 ~5.5 V
-Input voltage conversion range: 0~VDDA
Timer
-1 16-bit advanced control timer (TIM1) with 6 channels of PWM output with deadband control each.
-4 general-purpose 16-bit timers
-1 independent watchdog timer (FWDT): 8-bit preset number and 12-bit auto-decrement counter
-1-channel watchdog timer (WWDT): 7-bit auto-decrement counter
1 system time timer: 24-bit auto-decrement counter
DMA
-5-channel DMA controller
-Supported peripherals: SPIx, I2Cx, USARTx, TIMx, ADC
Interrupts and events
-Up to 32 individually maskable interrupt channels
-4 priority levels selectable
-16 external interrupt lines
Serial Peripheral Interface (SPI)
-1 SPI interface
-3-bit prescaler can generate 8 master mode frequencies
-4 to 16-bit configurable frame formats
Universal Synchronous/Asynchronous Transceiver (USART)
-2 USART
-Automatic baud rate detection
-Supports wake-up from deep sleep 1/deep sleep 2 mode
I2C
-One I2C supports master/slave mode
-Support: standard mode (100k bit/s), fast mode (up to 400k bit/s)
-Supports 7-bit or 10 bit addressing mode
-CRC generator/verifier
-Serial single line debugging (SWD)