FUJITSU F2MC-8L F202RA - Manual (Page 386)

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CHAPTER 17 FLASH MEMORY
Figure 17.5-1 Example of the Flash Memory Write Procedure
D a t a
D a t a
D a t a
0
1
D a t a
S t a rt writing*
M a ke su re +10V DC volt a ge
i s a pplied a t the R S T pin b efore
s t a rt writing
*
FMC S : WE ( b it5)
En ab le fl as h memory write
Write comm a nd s e qu ence
(1) FAAA <-- AA
(2) F554 <-- 55
(
3 ) FAAA <-- A0
(4) Write a ddre ss <-- Write d a t a
Re a d intern a l a ddre ss Next a ddre ss
D a t a polling (DQ7)
Timing limit (DQ5)
Re a d intern a l a ddre ss
D a t a polling (DQ7)
Write error Fin a l a ddre ss
NO
YE S
FMC S : WE ( b it5)
Write-di sab le fl as h memory.
Complete writing
Confirm with the h a rdw a re
s e qu ence fl a g s .