Fujitsu 8FX

MB95630H Series
552 FUJITSU SEMICONDUCTOR LIMITED MN702-00009-2v0-E
CHAPTER 26 DUAL OPERATION FLASH MEMORY
26.5 Programming/Erasing Flash Memory
Figure 26.5-1 Sample Procedure for Programming to Flash Memory
Start of programming
Read internal address.
Programming command sequence
(1) 0xUAAA ← 0xAA
(2) 0xU554 ← 0x55
(3) 0xUAAA ← 0xA0
(4) Program address ← Program data
Next address
Read internal address.
Data polling
(DQ7)
Data polling
(DQ7)
Data
Data
Execution timeout
(DQ5)
1
End of programming
0
Last address?
YES
NO
Program error
Data
Data
FSR:WRE
Enable Flash memory programming.
SWRE0
Enable/disable programming data to a sector.
(Write "0" to disable programming data or “1” to enable
programming data to a sector.)
FSR:WRE
Disable Flash memory programming.