本帖最后由 ttyp 于 2012-12-20 11:50 编辑
2560
Digital I/O Pins 54 (of which 15 provide PWM output)
Analog Input Pins 16
External Interrupts: 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2). These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details.
PWM: 2 to 13 and 44 to 46. Provide 8-bit PWM output with the analogWrite() function.
SPI: 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS). These pins support SPI communication using the SPI library. The SPI pins are also broken out on the ICSP header, which is physically compatible with the Uno, Duemilanove and Diecimila.
LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.
TWI: 20 (SDA) and 21 (SCL). Support TWI communication using the Wire library. Note that these pins are not in the same location as the TWI pins on the Duemilanove or Diecimila.
和2560比,少了一下数字口和模拟口,少了2个pwm,多了2个串口,1个I2C
不知道价格到底多少,还有flash,ram,eeprom?貌似几乎没有优势啊,串口还可以模拟的,兼容性也是个问题,唯一好的是多了一个I2C |