IMP706JCSA IMP Inc, IMP706JCSA Datasheet - Page 5

• Manufacturer Part Number: IMP706JCSA
• Description: 3/3.3/4.0V P SUPERVISOR CIRCUITS
• Manufacturer: IMP Inc

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Power-fail detector
Brownout detection
Debounced manual RESET input
Power-up/down RESET
Watchdog timer
Active-HIGH RESET
Active-LOW RESET
Active-LOW and HIGH RESETs
RESET threshold
1999 IMP, Inc.
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2.63V
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2.63V
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408-432-9100/www.impweb.com
IMP706P/R/S/T/J, IMP708R/S/T/J
IMP706P/R/S/T/J, IMP708R/S/T/J
2.93V
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3.08V
RESET
RESET
WDO
GND
PFO
WDI
V
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MR
PFI
NC
CC
Manual reset input. The active LOW input triggers
a reset pulse. It is pulled HIGH by a 20kΩ pull-up
resistor. It is compatible with TTL/CMOS signals
when V
through a mechanical switch. Leave floating or
connect to V
Monitored power supply input.
Ground
Power-fail input voltage monitor. With PFI less than
1.25V, PFO goes LOW. Connect PFI to ground
when not used.
Power-fail output. The output is active LOW and
used, leave the pin unconnected.
Watchdog input. WDI controls the internal watchdog
timer. A HIGH or LOW signal for 1.6 sec at WDI
allows the internal timer to run-out, setting WDO low.
A rising or falling edge must occur at WDI within
1.6 seconds or WDO goes LOW. The watchdog
function is disabled by floating WDI. The internal
watchdog timer clears when: RESET is asserted;
WDI is three-stated; or WDI sees a rising or falling edge.
Not connected.
Active-LOW reset output. Pulses LOW for 200ms
when triggered, and stays LOW whenever V
below the reset threshold. RESET remains LOW for
200ms after V
or MR goes from HIGH to LOW. A watchdog timeout
will not trigger RESET unless WDO is connected to MR.
Watchdog output. WDO goes LOW when the 1.6
second internal watchdog timer times-out and does
not go HIGH until a transition occurs at WDI. In
addition, when V
WDO goes LOW. Unlike RESET, WDO does not have
a minimum pulse width and as soon as V
the reset threshold, WDO becomes HIGH with no delay.
Active-HIGH reset output. RESET is the inverse of
RESET.
4.00V
sinks current when PFI is less than 1.25V. If not
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CC
= 5V. It can be shorted to ground
2.63V
CC
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CC
if the function is not used.
CC
rises above the RESET threshold
falls below the reset threshold,
2.93V
Feature Summary
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Pin Descriptions
3.08V
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CC
CC
exceeds
4.00V
is
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