S29AS008J datasheet(24/55 Pages) SPANSION

Part #	S29AS008J

Description	8 Megabit (1M x 8-Bit / 512K x 16-Bit) CMOS 1.8 Volt-Only Boot Sector Flash Memory

PDF	55 Pages

Scroll/Zoom	100%

Manufacturer	SPANSION [SPANSION]

Direct Link	http://www.spansion.com

Logo

24 / 55 page

S29AS008J

S29AS008J_00_09 November 9, 2011

Da ta

Sh e e t

The Secured Silicon Sector protection must be used with caution since, once protected, there is no procedure

available for unprotecting the Secured Silicon Sector area, and none of the bits in the Secured Silicon Sector

memory space can be modified in any way.

Figure 8.1 Secured Silicon Sector Protect Verify

Write 60h to

any address

Write 40h to

Secured Silicon

Sector address

with A0=0, A1=1,

A2=0, A3=1, A4=1,

A5=0, A6=0, A7=0

START

RESET# = VID

Wait 1 ms

Read from

Secured Silicon

Sector address

with A0=0, A1=1

A2=0, A3=1, A4=1

A5=0, A6=0, A7=0

If data = 00h,

Secured Silicon

Sector is

unprotected.

If data = 01h,

Secured Silicon

Sector is

protected.

Remove VID

from RESET#

Write reset

command

Secured Silicon

Sector Protect

Verify complete

S29AS008J Datasheet(PDF) 24 Page - SPANSION