RP2350 PiZero Development Board, Based On The Raspberry Pi RP2350 28972 3V Input Voltage (limit) 21V MEC7002 M4 50 3V Input Voltage (limit) 21V DC Current per I O Pin 15 mA Clock Speed 64MHz CPU Flash Memory 1MB (nRF52840) SRAM 256KB (nRF52840) EEPROM none Digital Input Output Pins 14 PWM Pins all digital pins UART 1 SPI 1 I2C 1 Analog Input Pins 8 (ADC 12 bit 200 ksamples) Analog Output Pins Only through PWM (no DAC) External Interrupts all digital pins LED_BUILTIN 13 USB Native in the nRF52840 Processor Length 45 mm Width 18 mm Weight 5 gr (with headers) An automatic restart circuit makes programming with Arduino and other IDE a breeze Comprehensive SDK Accelerated floating point libraries on chip 17