AM41DL3224GT85I AMD (ADVANCED MICRO DEVICES), AM41DL3224GT85I Datasheet - Page 23
AM41DL3224GT85I
Manufacturer Part Number
AM41DL3224GT85I
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.AM41DL3224GT85I.pdf
(65 pages)
Specifications of AM41DL3224GT85I
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Note that the WP#/ACC pin must not be left floating or
unconnected; inconsistent behavior of the device may
result.
Temporary Sector/Sector Block Unprotect
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table
10).
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
SET# pin to V
formerly protected sectors can be programmed or
erased by selecting the sector addresses. Once V
removed from the RESET# pin, all the previously pro-
tected sectors are protected again. Figure 1 shows the
algorithm, and Figure 25 shows the timing diagrams,
for this feature.
22
ID
(11.5 V – 12.5 V). During this mode,
P R E L I M I N A R Y
Am41DL32x4G
ID
is
Notes:
1. All protected sectors unprotected (If WP#/ACC = V
2. All previously protected sectors are protected once
Figure 1. Temporary Sector Unprotect Operation
outermost boot sectors will remain protected).
again.
Unprotect Completed
Program Operations
Temporary Sector
Perform Erase or
RESET# = V
RESET# = V
(Note 1)
(Note 2)
START
November 12, 2001
ID
IH
IL
,
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