R
EM6152
Voltage Monitoring
V
IN
V
REF
V
HY
Conditions:
V
OUTPUT
>
3V
No timeout
T
SEN
T
SEN
T
SEN
T
SEN
T
POR
T
POR
RES
Fig. 5
Timer Reaction
Conditions: V
IN
> V
REF
after power-up sequence
T
CW
T
CW
T
TCL
T
CW
+ T
OW
T
CW
+ T
OW
T
OW
T
CW
T
CW
+ T
OW
T
TCL
TCL
RES
T
WDR
1
2
3
EN
3 correct TCL services
EN goes active low
- Watchdog timer reset
Timeout
Fig. 6
Combined Voltage and Timer Reaction
V
IN
V
REF
T
POR
T
OW
T
CW
+T
OW
T
TCL
T
CW
Condition:
V
OUTPUT
> 3V
TCL
RES
EN
1
2
3
TCL
too early
- Watchdog timer reset
3 correct TCL services
EN goes active low
Fig. 7
Copyright © 2006, EM Microelectronic-Marin SA
rev. B / 06.06
6
www.emmicroelectronic.com