Arduino comparison

Characteristic	Sanguino	Arduino	Arduino Mega	Leonardo
Processor	atmega644P	atmega328	atmega1280	atmega32U4
GPIO Pins	32	20	54	26
Analog Pins	8	6	16	12
PWM Pins	6	6	14	8
Flash Memory	64K	32K	128K	32K
RAM	4096 bytes	2048 bytes	8192 bytes	3072 bytes
EEPROM	2048 bytes	1024 bytes	4096 bytes	1024 bytes
External Interrupts	3	2	32	13
JTAG	yes	no	yes	yes
I2C	yes	yes	yes	yes
SPI	yes	yes	yes	2
USARTs	2	1	4	1
Onboard USB<->Serial Converter?	no	yes	yes	in-chip