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*1: Bit 2 toggles when reading continuously from the erase suspension sector.
*2: Bit 6 toggles even when reading continuously from any address.
*3: During writing erasure suspension, bit 2 will be "1" when reading the address that is being written.
However, bit 2 toggles when reading continuously from sectors in which erasure is suspended.
The bits lists in the Table 21.5-1 have the following meaning:
[bit 7]:DPOLL=Data polling
[bit 6]:TOGGLE=Toggle bit
[bit 5]:TLOVER=Time limit exceeded
[bit 3]:SETIMR=Sector erasing timer
[bit 2]:TOGGL2=Toggle bit 2
Each bit is briefly described below:
[bit 7]:DPOLL (Data polling)
Table 21.5-1 State list of hardware sequence flag
State DPOLL TOGGLE TLOVER SETIMR TOGGL2
Executing
Automatic Writing operation Reverse Data Toggle 0 0 1
Automatic Erasing operation 0 Toggle 0 1 Toggle
Erase
suspension
mode
Erase suspension read (sectors in
erase suspension)
1 1 0 0
Toggle
*1
Erase suspension read (sectors not
in erase suspension)
Data Data Data Data Data
Erase suspension write (sectors
not in erase suspension)
Reverse Data
Toggle
*2
0 0
1
*3
Time limit
exceeded
Automatic Writing operation Reverse Data Toggle 1 0 1
Automatic Erasing operation 0 Toggle 1 1 Undefined
Write operation at erase suspension 0 Toggle 1 1 Undefined