Xnucleo User Manual
1
V2.6.1, Apr. 25
th
2015
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XNUCLEO USER MANUAL
FEATURES
Compatible with NUCLEO serials.
Arduino connectivity support, easy to connect with various Arduino shields and access the
massive Arduino resources
ST Morpho headers provide full access to all STM32 I/Os, easy for peripheral expansion
Supports mbed, build prototype quickly by mbed SDK and online tools
Comprehensive free software HAL library including a variety of software examples
Comes with a separated ST-LINK/V2 module
ADVANTAGES
Compare
XNUCLEO
NUCLEO
Remarks
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
