W19B160BT Datasheet, PDF (29/48 Pages) Winbond – 16Mbit, 2.7~3.6 volt CMOS flash memory

W19B160BT/B DATA SHEET
8.14 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.
- 29 -
Publication Release Date:Jan.04, 2008
Revision A5