EN29LV400A
Figure 12. Sector Protect/Unprotect Timing Diagram
VID
Vcc
RESET#
0V
0V
tVIDR
tVIDR
SA,
A6,A1,A0
Valid
Valid
Valid
Data
60h
60h
40h
Status
Sector Protect/Unprotect
Verify
CE#
>0.4µS
WE#
>1µS
Sector Protect: 150 uS
Sector Unprotect: 15 mS
OE#
Notes:
Use standard microprocessor timings for this device for read and write cycles.
For Sector Protect, use A6=0, A1=1, A0=0. For Sector Unprotect, use A6=1, A1=1, A0=0.
Temporary Sector Unprotect
Speed Option
-45R -55R -70
Unit
Parameter
Std
Description
-90
tVIDR
tRSP
VID Rise and Fall Time
Min
Min
500
4
Ns
µs
RESET# Setup Time for Temporary
Sector Unprotect
Figure 13. Temporary Sector Unprotect Timing Diagram
VID
RESET#
0 or 3 V
0 or 3 V
tVIDR
tVIDR
CE#
WE#
tRSP
RY/BY#
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
©2005 Eon Silicon Solution, Inc., www.essi.com.tw
35
Rev. A, Issue Date: 2005/01/07
EON [ EON SILICON SOLUTION INC. ]
