STM32F301K6U6

ARM® Cortex®-M4 32bit MCU + FPU. Supports three I2Cs with 20mA current sink to support fast mode plus, up to 3 USARTs, 1 with ISO 7816 I/F, auto baudrate detect and dual clock domain, up to two SPIs with multiplexed full duplex I2S and infrared transmitter communication interfaces.

• Reset and power management (power-on/power down reset, programmable voltage detector)
• Clock management (internal 8MHz RC with x 16 PLL option, 32KHz oscillator for RTC with calibration)
• Up to 51 fast I/O ports, all mappable on external interrupt vectors, several 5V-tolerant
• Interconnect matrix and CRC calculation unit
• 7-channel DMA controller supporting timers, ADCs, SPIs, I2Cs, USARTs and DAC
• 1 x ADC, temperature sensor and 12bit DAC channel with analogue supply from 2.4 to 3.6V
• 3 fast rail to rail analogue comparators with analogue supply from 2.0 to 3.6V
• Up to 18 capacitive sensing channels supporting touch key, linear and rotary sensors
• Up to 9 timers, 96bit unique ID and serial wire debug, JTAG
• Calendar RTC with alarm, periodic wakeup from stop/standby