If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Segment A也是可以写入数据的，如何写入详见 user guide对应的 “7.2.1 Segment A”。其中有对应的汇编操作example,你可以参考一下，具体如下：
The state of the LOCKA bit is toggled when a 1 is written to it. Writing a 0 to LOCKA has no effect. This allows existing flash programming routines to be used unchanged. ; Unlock Info Memory MOV #FWPW,&FCTL4 ; Clear LOCKINFO, if set ; Unlock SegmentA BIT #LOCKA,&FCTL3 ; Test LOCKA JZ SEGA_UNLOCKED ; Already unlocked? MOV #FWPW+LOCKA,&FCTL3 ; No, unlock SegmentA SEGA_UNLOCKED ; Yes, continue ; SegmentA is unlocked ; Lock SegmentA BIT #LOCKA,&FCTL3 ; Test LOCKA JNZ SEGA_LOCKED ; Already locked? MOV #FWPW+LOCKA,&FCTL3 ; No, lock SegmentA SEGA_LOCKED ; Yes, continue ; SegmentA is locked ; Lock Info Memory MOV #FWPW+LOCKINFO,&FCTL4 ; Set LOCKINFO
