Magnatron
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Name Arduino Duemilanove Sanguino Arduino MEGA
Microcontroller atmega168 or atmega328 atmega644p atmega1280
Speed 16 MHz 16 MHz 16 MHz
Flash Memory (program space) 16KB or 32KB 64KB 128KB
RAM 1KB or 2KB 4KB 8KB
EEPROM 512 or 1024 bytes 2048 bytes 4096 bytes
I/O Pins (TOTAL) 20 32 54
PWM Pins 6 6 14
Analog In Pins 6 8 16
Serial Ports 1 2 4
I2C YES YES YES
SPI YES YES YES
Name Arduino Duemilanove Sanguino Arduino MEGA
Microcontroller atmega168 or atmega328 atmega644p atmega1280
Speed 16 MHz 16 MHz 16 MHz
Flash Memory (program space) 16KB or 32KB 64KB 128KB
RAM 1KB or 2KB 4KB 8KB
EEPROM 512 or 1024 bytes 2048 bytes 4096 bytes
I/O Pins (TOTAL) 20 32 54
PWM Pins 6 6 14
Analog In Pins 6 8 16
Serial Ports 1 2 4
I2C YES YES YES
SPI YES YES YES