M29W320DT, M29W320DB
Block Protection
Table 27. Programmer Technique Bus Operations, BYTE = V or V
IH
IL
Address Inputs
Data Inputs/Outputs
DQ15A–1, DQ14-DQ0
Operation
E
G
W
A0-A20
A9 = VID, A12-A20 Block Address
Others = X
Block Protect
VIL
VID VIL Pulse
X
X
A9 = VID, A12 = VIH, A15 = VIH
Others = X
Chip Unprotect
VID VID VIL Pulse
A0 = VIL, A1 = VIH, A6 = VIL, A9 = VID,
A12-A20 Block Address
Pass = XX01h
Retry = XX00h
Block Protection
Verify
VIL
VIL
VIL
VIL
VIH
Others = X
A0 = VIL, A1 = VIH, A6 = VIH,
A9 = VID, A12-A20 Block Address
Retry = XX01h
Pass = XX00h
Block Unprotection
Verify
VIH
Others = X
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