Fujitsu FR60 Hardware Manual page 578

CHAPTER 17 FLASH MEMORY
Write error
560
Figure 17.5-1 Example of Write Procedure
Writing start
Enable writing to flash memory
with WE (bit 1) in FLCR.
Write command sequence
AAAAA (ROM1)/AAAAE (ROM2)
D5552 (ROM1)/D5556 (ROM2)
AAAAA (ROM1)/AAAAE (ROM2)
Write address write data
Read internal address.
Data polling (DPOLL)
Dat
0
Time limit (TLOVER)
1
Read internal address.
Dat
Data polling (DPOLL)
Dat
Last address
Yes
Disable writing to flash memory
with WE (bit 1) in FLCR.
Writing completion
AA
55
A0
Next address
Dat
No
Check hardware sequence flag