Industry-Electronics 4duino Sensor Shield V8.0 Product Model: OKY2205 DUE R3 Board SAM3X8E 32-bit ARM Cortex-M3 Control Board Module For Arduino Product Description 1.Microcontroller: AT91SAM3X8E. 2.Operating Voltage: 3.3V. 3.Recommended Input Voltage: 7-12V. 4.Min-Max Input Voltage: 6-20V. 5.Digital I/O Pins: 54 (of which 12 provide PWM output). 6.Analog Input Pins: 12. 7.Analog Outputs Pins: 2. 8.Total DC Output Current on all I/O lines: 130 mA. 9.DC Current for 3.3V Pin: 800 mA. 10.DC Current for 5V Pin: 800 mA. 11.Flash Memory: 512 KB all available for the user applications. 12.SRAM: 96 KB (two banks: 64KB and 32KB). 13.Clock Speed: 84 MHz.