SAMD21中文資料ETC數(shù)據(jù)手冊PDF規(guī)格書

描述 Description

Take a look at Seeeduino XIAO. What a small size and cute looking! It is the smallest

member of the Seeeduino family. Seeeduino XIAO still carries the powerful CPU-ARM?

Cortex?-M0+(SAMD21G18) which is a low-power Arduino microcontroller. On the other

hand, this little board has good performance in processing but needs less power. As a

matter of fact, it is designed in a tiny size and can be used for Arduino wearable devices and

small projects.

Apart from the strong CPU, Seeeduino XIAO is excellent in many other functions. It has 14

GPIO PINs, which can be used for 11 analog PINs, 11 digital PINs, 1 I2C interface, 1 UART

interface, and 1 SPI interface. Some PINs have various functions, A1/D1 to A10/D10 Pins

have PWM functions and Pin A0/D0 has a function of DAC which means you can get

true analog signals not PWM signals when you define it as an analog pin, that’s why 14

GPIO PINs can realize more I/O PINs and interfaces. Moreover, Seeeduino XIAO supports

the USB Type-C interface which can supply power and download code. There are power

pads at the back of the XIAO which support battery and make it designed for wearable

devices to become realistic. Except for the power LED, we add a user LED on board for your

better coding experience. Usually a Dev. Board as small as this size will use the chip’s inner

crystal oscillator for time fixing, in order to make the clock more accurate, Seeeduino XIAO

layouts an extra 32.768KHz to make the clock more stable.