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S29AS008J 데이터시트(PDF) 24 Page - SPANSION

부품명 S29AS008J
상세설명  8 Megabit (1M x 8-Bit / 512K x 16-Bit) CMOS 1.8 Volt-Only Boot Sector Flash Memory
PDF  55 Pages
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제조업체  SPANSION [SPANSION]
홈페이지  http://www.spansion.com
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S29AS008J 데이터시트(HTML) 24 Page - SPANSION

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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



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