Other Parts Discussed in Thread: MSP-GANG
I mass-produced a batch of products, using MSP430FR2311IPW16R. Use MSP-GANG to burn, burn 8 pieces each time, Unfortunately, many program failed.
So, I made the simplest circuit board, which only includes a chip and a reset resistor and capacitor, and it cannot be programmed. After replacing the chip, it can be burned.
I used an oscilloscope and a logic analyzer to record the waveform of the FET430 during programming. (See the appendix for the wave file record.)
simplest circuit board(only 3 components: chip, 47k resistor, 1nf capacitor)
wafeform for OK chip.
wafeform for NG chip(FET430 send data, but no answer from P1.7 UCA0TXD)
waveform recorded by PulseView