M29DW128F60NF1F NUMONYX [Numonyx B.V], M29DW128F60NF1F Datasheet - Page 86
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M29DW128F60NF1F
Manufacturer Part Number
M29DW128F60NF1F
Description
128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V supply Flash memory
Manufacturer
NUMONYX [Numonyx B.V]
Datasheet
1.M29DW128F60NF1F.pdf
(94 pages)
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High Voltage Block Protection
D.2
The In-System technique requires a high voltage level on the Reset/Blocks Temporary Unprotect pin, RP
(1)
microprocessor bus, therefore this technique is suitable for use after the memory has been fitted to the
system.
To protect a group of blocks follow the flowchart in
flowchart
can be unprotected at the same time. To unprotect the chip follow
Unprotect flowchart
The timing on these flowcharts is critical. Care should be taken to ensure that, where a pause is
specified, it is followed as closely as possible. Do not allow the microprocessor to service interrupts that
will upset the timing and do not abort the procedure before reaching the end. Chip Unprotect can take
several seconds and a user message should be provided to show that the operation is progressing.
Note:
Table 42.
1. Block Protection Groups are shown in
86/94
Block (Group) Protect
Chip Unprotect
Block (Group) Protect
Verify
Block (Group) Unprotect
Verify
. This can be achieved without violating the maximum ratings of the components on the
Operation
. To unprotect the whole chip it is necessary to protect all of the groups first, then all the groups
In-System technique
RP can be either at V
Extended Block.
Programmer technique Bus operations, 8-bit or 16-bit mode
.
(1)
V
V
V
V
E
ID
IL
IL
IL
V
V
V
V
G
ID
ID
IL
IL
Appendix A
IH
V
V
or at V
IL
IL
V
V
W
Pulse
Pulse
IH
IH
,
ID
Table 34
when using the In-System Technique to protect the
A9 = V
A9 = V
A9 = V
A0 = V
A0 = V
A6 = V
Figure 25: In-System equipment Group Protect
.
A15 = V
ID
ID
ID
IL
A6 = V
IL
Address Inputs
, A12-A22 Block Address
IH
, A12-A22 Block Address
, A12-A22 Block Address
, A1 = V
, A1 = V
, A9 = V
Others = X
Others = X
Others = X
A0-A22
IH
IH
, A7 = V
Others = X
IH
IH
ID
, A2 -A5 = V
, A2-A7 = V
Figure 26: In-System equipment Chip
, A12 = V
IL
,
IH
IL
IL
,
,
,
DQ15A–1, DQ14-DQ0
Data Inputs/Outputs
Retry = xx01h.
Retry = xx00h.
Pass = xx01h
Pass = xx00h
M29DW128F
X
X
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