MCP1316 Microchip Technology, MCP1316 Datasheet - Page 21

• Manufacturer Part Number: MCP1316
• Description: Voltage Supervisor
• Manufacturer: Microchip Technology

TABLE 3-1:
© 2005 Microchip Technology Inc.
Note 1:
SOT23-5
Pin No.
3
4
5
Open-Drain output with internal pull-up resistor.
MCP1316M,
MCP1318M,
MCP1319M,
MCP1316M,
MCP1318M,
MCP1319M,
MCP1316,
MCP1317,
MCP1318,
MCP1319,
MCP1321,
MCP1316,
MCP1317,
MCP1318,
MCP1320,
MCP1319,
PIN FUNCTION TABLE (CONTINUED)
MCP1320
MCP1322
MCP1321
MCP1322
Device
All
Symbol
RST
WDI
V
MR
MR
DD
Type
Pin
—
O
I
I
I
Push-Pull
Buffer/
Driver
Type
ST
ST
ST
P
Manual Reset input for a Reset switch.
This input allows a push button switch to be directly con-
nected to the MCP131X/2X MR pin, which can then be
used to force a system Reset. This input filters (ignores)
noise pulses that occur on the MR pin.
L = Switch is depressed (shorted to ground). This forces
H = Switch is open (internal pull-up resistor pulls signal
Reset Output (active-high)
Goes active (High) if one of these conditions occurs:
1.
2.
3.
4.
V
H = V
L = V
V
H = V
L = V
Watchdog Timer Input
The WDT period is specified at the time of device order.
The Standard WDT period is 1.6s typical.
An edge transition on the WDI pin resets the Watchdog
Timer counter (no time out). A Falling Edge is required to
start the WDT Timer.
Manual Reset input for a Reset switch.
This input allows a push button switch to be directly con-
nected to the MCP131X/2X MR pin, which can then be
used to force a system Reset. This input filters (ignores)
noise pulses that occur on the MR pin.
L = Switch is depressed (shorted to ground). This forces
H = Switch is open (internal pull-up resistor pulls signal
The positive supply for the device.
DD
DD
high). State of the RST/RST pins determined by
other system conditions.
the RST/RST pins Active.
high). State of the RST/RST pins determined by
other system conditions.
the RST/RST pins Active.
If V
threshold.
If the MR pin is forced low.
If the WDI pin does not detect an edge transition
within the minimum selected time out period.
During power-up.
Falling:
Rising:
DD
DD
DD
DD
> V
> V
DD
< V
< V
TRIP
TRIP
falls below the selected Reset voltage
TRIP
TRIP
+ V
+ V
HYS
HYS
Function
MCP131X/2X
DS21985A-page 21