HY29F040A Datasheet, PDF (16/40 Pages) Hynix Semiconductor – 512K x 8-bit CMOS 5.0 volt-only, Sector Erase Flash Memory

START
Read Byte
(DQ0-DQ7), Addr = VA
VA = Byte address for programming
= Any of the sector addresses
within the sector being erased
during sector erase operation.
= XXXXH during Chip Erase
DQ7 = Data
YES
?
NO
NO
DQ5 = 1
?
YES
Read Byte
(DQ0-DQ7), Addr = VA
DQ7 = Data
?
NO
Fail
YES
Pass
Notes:
1. DQ7 is rechecked even if DQ5 = logical “1” because DQ7 may change simultaneously with DQ5.
Figure 3. /Data Polling Algorithm
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HY29F040A