S29AL016J70BFN020 Просмотр технического описания (PDF) - Spansion Inc.

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производитель

S29AL016J70BFN020

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

Spansion Inc. 

Data Sheet

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

START

RESET# = VID

Wait 1 ms

Write 60h to

any address

Write 40h to SecSi

Sector address

with A0=0, A1=1,

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

A5=0, A6=0, A7=0

Read from SecSi

Sector address

with A0=0, A1=1,

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

A5=0, A6=0, A7=0

If data = 00h,

SecSi Sector is

unprotected.

If data = 01h,

SecSi Sector is

protected.

Remove VID

from RESET#

Write reset

command

SecSi Sector

Protect Verify

complete

26

S29AL016J

S29AL016J_00_10 February 18, 2010

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