Fujitsu MB91260B Series Hardware Manual page 440

CHAPTER 17 FLASH MEMORY
Figure 17.5-3 Write/Erase Confirmation Flow Chart Using Toggle Bit Function
Write/Erase Start
Read (D0 to D7)
Address="H" or "L"
NO
D6=Toggle?
YES
NO
D5=1 ?
YES
Read (D0 to D7)
Address="H" or "L"
NO
D6=Toggle?
*
YES
Write/Erase
Write/Erase
Fail
Pass
*: D6 stops toggle operation when D5 changes to "1", so even if
D5=1, it is necessary to check D6 again.
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