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G
Explanation of hardware sequence flag
Table 19.7-2 "List of Hardware Sequence Flag Functions" lists the functions of the hardware
sequence flag.
Table 19.7-2 List of Hardware Sequence Flag Functions
State
State change in
Programming Æ Completed
normal
(when program address
operation
specified)
Chip and sector erasing
Æ Completed
Sector erasing wait
Æ Started
Erasing Æ Sector erasing
suspended
(Sector being erased)
Sector erasing suspended Æ
Resumed
(Sector being erased)
Sector erasing being
suspended
(Sector not being erased)
Abnormal
Programming
operation
Chip and sector erasing
*: If the DQ5 flag is 1 (timing limit over), the DQ2 flag performs the toggle operation for continuous reading from the
programming/erasing sector but does not perform the toggle operation for reading from other sectors.
CHAPTER 19 512 KBIT FLASH MEMORY
DQ7
DQ6
DQ7 →
Toggle →
DADATA:7
DATA:6
Toggle →
0 → 1
Stop
0
Toggle
0 → 1
Toggle → 1
1 → 0
1 → Toggle
DATA:7
DATA:6
DQ7
Toggle
0
Toggle
DQ5
DQ3
0 →
0 →
DATA:5
DATA:3
0 → 1
1
0 →
0
1 → 0
0
0
0 → 1
DATA:5
DATA:3
1
0
1
1
DQ2
1 →
DATA:2
Toggle →
Stop
Toggle
Toggle
Toggle
DATA:2
1
*
591
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