Keyestudio Nano CH340 Development Board Keyestudio's Nano CH340 is a small, complete, and breadboard-friendly board based on the ATmega328P-AU. Compared with ARDUINO NANO, the USB-to-serial port chip used in Keyestudio's Nano is CH340G, so that the usage is the same except when it comes to the driver installation file. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 8 analog inputs, a 16 MHz crystal oscillator, a mini USB port, an ICSP header and a reset button. Note that ICSP (In-Circuit Serial Programming) header is used to program the firmware to ATMEGA328P-AU, but generally the chip has been preprogrammed. The Keyestudio Nano can be powered via the Mini-B USB connection, or female headers Vin/GND (DC 7-12V). Features: Operating Voltage 5V Input Voltage (recommended) DC7-12V Digital I/O Pins 14 (D0-D13) (of which 6 provide PWM output) PWM Digital I/O Pins 6 (D3, D5, D6, D9, D10, D11) Analog Input Pins 8 (A0-A7) DC Current per I/O Pin 40 mA Flash Memory 32 KB of which 2 KB used by bootloader SRAM 2 KB EEPROM 1 KB Clock Speed 16 MHz LED_BUILTIN D13 Note: Don't forget to download the CH340G Driver files in Additional Files!
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