W19B160BTT7H Datasheet, PDF (29/47 Pages) Winbond – 2.7~3.6-volt write (program and erase) operations, Fast write operation

W19B160BT/B DATA SHEET
8.15 Data Polling Algorithm
START
Read DQ7-DQ0
Addr=VA
Yes
DQ7=Data?
No
No
DQ5=1?
Yes
Read DQ7-DQ0
Addr=VA
Yes
DQ7=Data?
No
FAIL
PASS
Notes:
1. VA = Valid address for programming. During a sector erase operation; a valid address is any sector address within the
sector being erased. During chip erase, a valid address is any non-protected sector address.
2. DQ7 should be rechecked even if DQ5 = “1” because DQ7 may change simultaneously with DQ5.
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Publication Release Date Apr,20, 2009
Revision A9