Datasheet

 2005-2012 Microchip Technology Inc. DS21985D-page 23
MCP131X/2X
3.0 PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
Pin No.
Device Symbol
Pin
Type
Buffer/
Driver
Type
Function
SOT23-5
1
MCP1316M
(1)
,
MCP1318M
(1)
,
MCP1319M
(1)
,
MCP1320,
MCP1321,
MCP1322
RST
O Open-Drain Reset Output (active-low)
Goes active (Low) if one of these conditions occurs:
1. If V
DD
falls below the selected Reset voltage
threshold.
2. If the MR
pin is forced low.
3. If the WDI pin does not detect an edge transition
within the minimum selected time-out period.
4. During power-up.
V
DD
Falling:
Open-Drain = V
DD
> V
TRIP
L = V
DD
< V
TRIP
V
DD
Rising:
Open-Drain = V
DD
> V
TRIP
+ V
HYS
L = V
DD
< V
TRIP
+ V
HYS
MCP1316,
MCP1318,
MCP1319
O Push-Pull V
DD
Falling:
H = V
DD
> V
TRIP
L = V
DD
< V
TRIP
V
DD
Rising:
H = V
DD
> V
TRIP
+ V
HYS
L = V
DD
< V
TRIP
+ V
HYS
MCP1317 RST O Push-Pull Reset Output (active-high)
Goes active (High) if one of these conditions occurs:
1. If V
DD
falls below the selected Reset voltage
threshold.
2. If the MR
pin is forced low.
3. If the WDI pin does not detect an edge transition
within the minimum selected time-out period.
4. During power-up.
V
DD
Falling:
H = V
DD
< V
TRIP
L = V
DD
> V
TRIP
V
DD
Rising:
H = V
DD
< V
TRIP
+ V
HYS
L = V
DD
> V
TRIP
+ V
HYS
2AllV
SS
— P The ground reference for the device.
Note 1: Open-Drain output with internal pull-up resistor.