AM29LV065MU112REF datasheet(21/62 Pages) AMD

Teilenummer	AM29LV065MU112REF

Bauteilbeschribung	64 Megabit (8 M x 8-Bit) MirrorBit??3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O??Control

PDF	62 Pages

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Hersteller	AMD [Advanced Micro Devices]

Direct Link	http://www.amd.com

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21 / 62 page

September 12, 2006

Am29LV065MU

DA TA

SH EET

Temporary Sector Group Unprotect

(Note: In this device, a sector group consists of four adjacent

sectors that are protected or unprotected at the same time

(see Table 4).

This feature allows temporary unprotection of previ-

ously protected sector groups to change data in-sys-

tem. The Sector Group Unprotect mode is activated by

setting the RESET# pin to VID. During this mode, for-

merly protected sector groups can be programmed or

erased by selecting the sector group addresses. Once

ID is removed from the RESET# pin, all the previously

protected sector groups are protected again. Figure 1

shows the algorithm, and Figure 22 shows the timing

diagrams, for this feature.

Figure 1.

Temporary Sector Group

Unprotect Operation

START

Perform Erase or

Program Operations

RESET# = V

Temporary Sector

Group Unprotect

Completed (Note 2)

RESET# = V

(Note 1)

Notes:

1. All protected sector groups unprotected.

2. All previously protected sector groups are protected

once again.

AM29LV065MU112REF Datenblatt(PDF) 21 Page - Advanced Micro Devices