L160DB70VC datasheet(17/52 Pages) AMD

部件名	L160DB70VC

功能描述	16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

PDF	52 Pages

Scroll/Zoom	100%

制造商	AMD [Advanced Micro Devices]

网页	http://www.amd.com

标志

17 / 52 page

22358B7 May 5, 2006

Am29LV160D

DA TA

SH EET

Temporary Sector Unprotect

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 VID. During this mode, formerly protected

sectors can be programmed or erased by selecting the

sector addresses. Once VID is removed from the RE-

SET# pin, all the previously protected sectors are

protected again. Figure shows the algorithm, and Fig-

ure 22 shows the timing diagrams, for this feature.

Figure 1.

Temporary Sector Unprotect Operation

START

Perform Erase or

Program Operations

RESET# = VIH

Temporary Sector

Unprotect Completed

(Note 2)

RESET# = VID

(Note 1)

Notes:

1. All protected sectors unprotected.

2. All previously protected sectors are protected once

again.

L160DB70VC 数据表(PDF) 17 Page - Advanced Micro Devices