Operating Voltage
5V
Input Voltage (recommended)
7-12V
Input Voltage (limits)
6-20V
Digital I/O Pins
54 (of which 14 provide PWM output)
Analog Input Pins
16
DC Current per I/O Pin
40 mA
DC Current for 3.3V Pin
50 mA
Flash Memory
256 KB of which 4 KB used by bootloader
SRAM
8 KB
EEPROM
4 KB
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