AMC0XXCFLKA Datasheet, PDF (16/42 Pages) Advanced Micro Devices – 1, 2, 4, or 10 Megabyte 5.0 V-only Flash Memory PC Card

Write Operation Status
Table 9. Hardware Sequence Flags
Status
D7
D6
D5
Auto-Programming
D7
Toggle
0
In Progress Programming in Auto-Erase
0
Toggle
0
Erasing in Auto-Erase
0
Toggle
0
Exceeded
Time Limits
Auto-Programming
Programming in Auto-Erase
Erasing in Auto-Erase
D7
Toggle
1
0
Toggle
1
0
Toggle
1
Note: D0, D1, and D2 are reserve pins for future use. D4 is for AMD internal use only.
D3
D2–D0
0
1
(D)
1
0
1
(D)
1
Start
Read Byte
(D0–D7)
Addr = VA
Yes
D7 = Data?
No
No
D5 = 1?
Yes
Read Byte
(D0–D7)
Addr = VA
VA = Valid Address
VA = Byte addr for Write
operation
VA = Any segment (sector)
address during segment
(sector) erase operation
Yes
D7 = Data?
No
Fail
Pass
Note: D7 is rechecked even if D5 = 1 because D7 may change simultaneously with D5.
Figure 3. Data Polling Algorithm
18723C-4
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AmC0XXCFLKA
5/4/98