ARM MCU, ARM Cortex-M0+ Microcontrollers, ARM Cortex-M0+, 32 bit, 32 MHz, 32 KB,28 PinsProduct OverviewAccess line ultra-low power 32bit MCU ARM-based Cortex-M0+.Ultra-safe, low power BOR (brownout reset) with 5 selectable thresholdsUltra-low power POR/PDRInternal low power 37KHz RC, PLL for CPU clockUSART, SPI supported pre-programmed bootloaderSerial wire debug supportedUp to 38 fast I/Os (31 I/Os 5V tolerant)1KB of data EEPROM with ECC, 20byte backup register, 8KB RAM7-channel DMA controller, supporting ADC, SPI, I2C, USART and timers5x peripherals communication interface, 1x USART (ISO 7816, IrDA), 1x UART (lowpower)CRC calculation unit, 96-bit unique IDProduct InformationProduct Range: ARM Cortex-M0+ MicrocontrollersDevice Core: ARM Cortex-M0+No. of Bits: 32bitData Bus Width: 32bitOperating Frequency Max: 32MHzCPU Speed: 32MHzRAM Memory Size: 8KBIC Case / Package: UFQFPNNo. of Pins: 28PinsMCU Case Style: UFQFPNInterfaces: I2C, SPI, UART, USARTEmbedded Interface Type: I2C, SPI, UART, USARTSupply Voltage Min: 1.8VSupply Voltage Max: 3.6VMCU Family: STM32MCU Series: STM32L0MSL: MSL 1 - Unlimited