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This development kit includes :
|Arduino compatibility||UNO, Leonardo||UNO||XNUCLEO can be configured by jumper to compatible with UNO (default) or Leonardo|
|Arduino ICSP interface||Yes||None||ICSP is required by certain kinds of shields|
|USB connectivity||Yes||None||The USB connector of NUCLEO is for debugging ONLY, not available for USB connection|
|USB connector||Micro USB||Mini USB||Micro USB is the advanced USB standard|
|Morpho headers mark||Most||None||Now you can check the PCB mark instead of datasheet|
|Common interfaces are connected via||Jumpers||0Ω resistors||Jumpers are much easier to use, need no soldering|
|UART debugging||Available while in-circuit debugging||Not available while in-circuit debugging||The NUCLEO integrated ST-LINK/V2 functional chip can be simulated as serial port, however, it's not available while in-circuit debugging, whereas XNUCLEO features a stand-alone USB TO UART chip.|
|8MHz crystal||Yes||None||Timer is more accurate when using external 8MHz crystal|
|32.768KHz crystal||Yes||None||Required for RTC|
|USB fuse||Yes (500mA)||None||The computer USB interface might be harmed without fuse|
|LEDs||4||1||The more LEDs, the easier to monitor program running status|
|UART indicator||Yes||None||Data communication is visible now|
|DC input||Yes||None||A convenience|
|Button position||Close to PCB edge||Close to Arduino connector||The button won't be untouchable when connecting with an Arduino shield if it were close to the PCB edge|
|ST-LINK||Separated||Integrated||ST-LINK can be used anywhere else|
|Comes with USB cable||Yes||None|