Fujitsu F2MCTM-16LX Manual de usuario Pagina 565

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549
CHAPTER 24 512K-BIT FLASH MEMORY
Figure 24.7-2 Example of the Flash Memory Chip Procedure
NO
1
NO
YES
YES
0
FMCS: WE (bit 5)
Flash programming enabled
Erase command sequence
(1) FFAAAA XXAA
(2) FF5554 XX55
(3) FFAAAA XX80
(4) FFAAAA XXAA
(5) FF5554 XX55
(6) FFAAAA XX10
FMCS: WE (bit 5)
Disable flash memory erase
Start writing
Toggle bit (DQ6)
data1(DQ6)=data2(DQ6)
Read internal address 1
Timing limit (DQ5)
Toggle bit (DQ6)
data1(DQ6)=data2(DQ6)
Completed
Erase error
: Check by hardware
sequence flag
Read internal address 2
Read internal address 1
Read internal address 2
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