Nonvolatile memory (kByte)4RAM (kByte)0.25Number of ADC channels0Number of GPIOs14FeaturesReal-time clockUART0USBNoNumber of I2Cs0SPI0Number of comparator channels0Timers - 16-bit1Bootloader (BSL)UARTOperating temperature range (°C)-40 to 85RatingCatalog