The microcontroller of our board is an ATmega328P-mu. The microcontroller of the original ARDUlN0 pro mini is an ATmega328P-AU. The performance and functions of these two IC are the same because of the same core while the only difference is the smaller size. The power IC of our board is the AMS1117. The max input voltage of this IC is 15V DC while the original board is 12V. The max output current of this IC is 800mA* while the original board is 500mA. It can be used for more devices as power supply. Some simple applications can operate without any other power IC. * The max output current is influnced by the working temperature. If necessary, add a heatsink. There are 20 pins that can be used as digital I/O. There are 8 pins that can be used as analog inputs. Summary: Microcontroller ATmega328P-MU Operating Voltage 3.3V or 5V via VCC pin Input Voltage 2.7** -15 V*** Digital I/O Pins 20 Analog Input Pins 8 Clock Speed 8 MHz ** below 2.7V unable to work *** below 5V able to connect with VCC pins above 5V must connect with RAW pins Dimensions: 33.3 * 18.0 (mm) The power IC of our board is the AMS1117. The max input voltage of this IC is 15V DC while the original board is 12V. The max output current of this IC is 800mA* while the original board is 500mA. It can be used for more devices as power supply. Some simple applications can operate without any other power IC. * The max output current is influnced by the working temperature. If necessary, add a heatsink. There are 20 pins that can be used as digital I/O. There are 8 pins that can be used as analog inputs. Summary: Microcontroller ATmega328P-MU Operating Voltage 3.3V or 5V via VCC pin Input Voltage 2.7** -15 V*** Digital I/O Pins 20 Analog Input Pins 8 Clock Speed 8 MHz ** below 2.7V unable to work *** below 5V able to connect with VCC pins above 5V must connect with RAW pins Dimensions: 33.3 * 18.0 (mm)
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