BD4156MUV_09 ROHM [Rohm], BD4156MUV_09 Datasheet - Page 8

• Manufacturer Part Number: BD4156MUV_09
• Description: Power Switch for ExpressCardTM
• Manufacturer: ROHM [Rohm]

●TIMING CHART
○
BD4156MUV
c
www.rohm.com
2009 ROHM Co., Ltd. All rights reserved.
Stand-by Status
ON Status
From ON to Stand-by Status :SYSR=H→L
From Stand-by to ON Status :SYSR=L→H
SYSR=L
CP#=H⇔L
Primary
OFF
ON
ON
System Status
SYSR=L
CP#=L
V15=V3=OFF
V3AUX=OFF
SYSR=H⇔L
CP#=H
System Status
Auxiliary
⇔
OFF
ON
ON
SYSR=H
CP#=H
:SYSR=L
:SYSR=H
ExpressCard
Power ON/OFF Status of ExpressCard
ExpressCard
SYSR=H
CP#=L
SYSR=H
CP#=L
CP#=H→L
SYSR=L→H
CP#=L→H
SYSR=H→L
Asserted Before This
Asserted After This
De-asserted
De-asserted
Don’t care
Asserted
TM
Status
States Transition Diagram
V15=V3=ON
V3AUX=ON
TM
8/23
Module
Card Asserted Status
Card De-asserted Status
From De-asserted to Asserted Status :CP#=H→L
From Asserted to De-asserted Status :CP#=L→H
(+3.3V and +1.5V)
SYSR=H→L
CP#=L
SYSR=L→H
CP#=L
TM
Primary
OFF
OFF
OFF
OFF
OFF
ON
Card Status
Power Switch Status
SYSR=L
CP#=L→H
V15=V3=OFF
V3AUX=ON
:CP#=L
:CP#=H
Technical Note
(3.3V Aux)
2009.05 - Rev.A
Auxiliary
OFF
OFF
OFF
OFF
ON
ON