MCP131X datasheet(20/44 Pages) MICROCHIP

20 / 44 page

MCP131X/2X

DS21985A-page 20

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

Type

Buffer/

Driver

Type

Function

SOT23-5

MCP1316M (1),

MCP1318M (1),

MCP1319M (1),

MCP1320,

MCP1321,

MCP1322

RST

Open-Drain Reset Output (active-low)

Goes active (Low) if one of these conditions occurs:

If VDD falls below the selected Reset voltage

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.

VDD Falling:

Open-Drain = VDD > VTRIP

L = VDD < VTRIP

VDD Rising:

Open-Drain = VDD > VTRIP + VHYS

L = VDD < VTRIP + VHYS

MCP1316,

MCP1318,

MCP1319

Push-Pull VDD Falling:

H = VDD > VTRIP

L = VDD < VTRIP

VDD Rising:

H = VDD > VTRIP + VHYS

L = VDD < VTRIP + VHYS

MCP1317

RST

Push-Pull Reset Output (active-high)

Goes active (High) if one of these conditions occurs:

If VDD falls below the selected Reset voltage

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.

VDD Falling:

H = VDD < VTRIP

L = VDD > VTRIP

VDD Rising:

H = VDD < VTRIP + VHYS

L = VDD > VTRIP + VHYS

2All

VSS

—

The ground reference for the device.

Note 1:

Open-Drain output with internal pull-up resistor.

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