© 2007 Microchip Technology Inc.

DS21381D-page 5

TC1270/TC1271

3.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

PIN FUNCTION TABLE

3.1

Ground Terminal (GND)

GND provides the negative reference for the analog

input voltage. Typically, the circuit ground is used.

3.2

Reset Output (RESET) (TC1270)

device will remain in Reset for the Reset delay timer

driven to the high state.

3.3

Reset Output (RESET) (TC1271)

device will remain in Reset for the Reset delay timer

driven to the low state.

3.4

Manual Reset (MR)

The Manual Reset (MR) input pin allows a push button

switch to easily be connected to the system. When the

push button is depressed, it forces a system Reset.

This pin has circuitry that filters noise that may be

present on the MR signal.

The MR pin is active-low and has an internal pull-up

resistor.

3.5

voltage level that requires monitoring.

Pin No.

Symbol

Description

1

GND

Ground

2

RESET

(

TC1270)

2

RESET

(TC1271)

3MR

Supply voltage