W39V040FB Datasheet, PDF (14/33 Pages) Winbond – 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE

9.3 Embedded #Data Polling Algorithm
W39V040FB
Start
Read Byte
(DQ0 - DQ7)
Address = SA
Yes
DQ7 = Data
?
No
No
DQ5 = 1
Yes
Read Byte
(DQ0 - DQ7)
Address = SA
Yes
DQ7 = Data
No
Fail
Pass
Note: SA = Valid address for programming .During a sector erase
operation, a valid address is an address within any sector selected for
erasure.
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