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emPC-CXR
(
Hardware Manual
)
•
System Control
©
Janz Tec AG
Rev. V1.2
P-BTN
INT
RESET
P-Off
Vin0
Tin00
<Tin00
Tin00
Vin2
Vin1
Hyst.
Hyst.
0.5 V
Hyst.
0.5 V
Tin21
Tin11
VIN
Assumes VS is above Vs0+0.5 all the time
Hyst.
Tin01
no P-BTN required, system starts
automatically after power is applied
figure 11: System control by power supply voltage (VIN)
P-BTN
INT
RESET
P-Off
Vs0
Ts0
<Ts0
Ts0
Hyst.
VS
Ts1*
1s
Assumes VIN is above
Vin0+0.5 all the time
Hyst.
Ts3
once a shutdown has been triggerd
it cannot be aborted by rising VS
min 2s
Ts2
Ts0
Ts0
Ts1*
shutdown delayed by
minimum n time. Shutdown
can be aborted during Ts3
figure 12:System control by remote control input (VS)