M29W320ET, M29W320EB
Block Protection
Table 29. 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 (group)
Protect(1)
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 (group)
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 (group)
Unprotection Verify
VIH
others = X
1. Block Protection groups are shown in Appendix A: Block Addresses, Table 20 and Table 21.
57/63
NUMONYX [ NUMONYX B.V ]
