Parameter
Microcontroller MD328D
Operating Voltage 5V or 3.3V
Input Voltage (recommended) 7-12V
Input Voltage (limit) 6-35V
Digital I/O Pins 14 (of which 6 provide PWM output)
PWM Digital I/O Pins 6
Analog Input Pins 6
DC Current per I/O Pin 20 mA
DC Current for 5V Pin 880mA(See Notice)
DC Current for 3.3V Pin 600 mA
Flash Memory 32 KB
of which 0.5 KB used by bootloader
SRAM 2 KB
EEPROM 1 KB
Clock Speed 16 MHz
Length 68.6 mm
Width 53.4 mm
Notice
The 5V Current limit is depended on the voltage difference between input and output , the regulator power consumption can be calculated below:
Pcm = (Vin - Vout) * Icm
In MassDuino UNO LC’s design , the Pcm must limit within 3.5W , so if the Input voltage is 9V , the voltage difference is 9V-5V = 4V ,to limit Pcm within 3.5W ,the current consumption must limit within 3.5V/4V = 0.875A.
The 3.3V max current consumption must limit within 600mA.
Again , the 3.3V LDO is serial to 5V regulator, to calculated 5V power consumption , must consider the 3.3V current consumption
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