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How to use Arduino Pro Mini

MicrocontrollerATmega328 *
Board Power Supply3.35 -12 V (3.3V model) or 5 – 12 V (5V model)
Circuit Operating Voltage3.3V or 5V (depending on model)
Digital I/O Pins14
PWM Pins6
UART1
SPI1
I2C1
Analog Input Pins6
External Interrupts2
DC Current per I/O Pin40 mA
Flash Memory32KB of which 2 KB used by bootloader *
SRAM2 KB *
EEPROM1 KB *
Clock Speed8 MHz (3.3V versions) or 16 MHz (5V versions)

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