MSP-FET: Question about connecting MSP-FET and MSP430FG6426IPZR

hiromichi.arashi said:

If the MSP-FET and MSP430FG6426IPZR are connected as shown in the diagram below, will there be any problems or effects?

It should be ok.

hiromichi.arashi said:

The user's manual has the connection diagram below, but can MSP-FET be used if pins 10, 12, 13, and 14 are not connected?

Yes, it works the PIN 10, 11, 12 ,13 and 14 are used for UART or I2C communication.