FLASH MCU for F2MC-16LX family is possible to program with word unit by issuing command as following on RAM.
Erase is sector unit.
FLASH Memory Writing Command
|Command Sequence||1st bus|
Command Program sample (execute on RAM)
MOV ADB,A ; Bank Setting
MOVW ADB:0AAAAh,#00AAH ; FLASH Write Command 1st cycle
MOVW ADB:5554h,#0055H ; FLASH Write Command 2nd cycle
MOVW ADB:0AAAAh,#00A0H ; FLASH Write Command 3rd cycle
MOVW ADB:0000h,#0AA55h ; FF0000h ← "55h", FF001h ← "AAh"