One of my customers is using MSP-Gang for programming MSP430F67651A. They use two MCU in this system and during production they first program other MCU. This MCU might do some activity on UART (UCA3) pins (Rx-P60, Tx-P61) of MSP430F67651A. Customer is getting some strange error code from MSP-Gang sometime and when they try to reprogram the same MCU, it gets programmed properly. They are using JTAG to program MSP430F67651A. They have the query" Can UART pin activity impact the JTAG programming of MSP430F67651?" As per me during Programming mode MSP430F67651 doesn't care about other pin activity except JTAG pins. Please advise your views on the same.