M29W641DH Datasheet, PDF (17/42 Pages) STMicroelectronics – 64 Mbit 4Mb x16, Uniform Block 3V Supply Flash Memory

Figure 5. Data Polling Flowchart
START
READ DQ5 & DQ7
at VALID ADDRESS
DQ7
=
YES
DATA
NO
NO _DQ5
=1
YES
READ DQ7
at VALID ADDRESS
DQ= 7 YES
DATA
NO
FAIL
PASS
AI90194
M29W641DH, M29W641DL, M29W641DU
Figure 6. Data Toggle Flowchart
START
READ DQ6
READ
DQ5 & DQ6
DQ= 6
NO
TOGGLE
YES
NO _DQ5
=1
YES
READ DQ6
TWICE
DQ= 6
NO
TOGGLE
YES
FAIL
PASS
AI90195B
17/42