UPD1002 datasheet(21/46 Pages) MICROCHIP

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 2014 Microchip Technology Inc.

DS00001760B-page 21

UPD1002

2.3

Buffer Types

Note:

All signals are 5 V tolerant.

TABLE 2-3:

BUFFER TYPES

Buffer Type

Description

Schmitt-triggered input

Output with 8 mA sink and 8 mA source

OD8

Open-drain output with 8 mA sink

50 µA (typical) internal pull-up. Unless otherwise noted in the signal description, internal

pull-ups are always enabled.

Note:

Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on

internal resistors to drive signals external to the device. When connected to a

load that must be pulled high, an external resistor must be added.

50 µA (typical) internal pull-down. Unless otherwise noted in the signal description, internal

pull-downs are always enabled.

Note:

Internal pull-down resistors prevent unconnected inputs from floating. Do not rely

on internal resistors to drive signals external to the device. When connected to a

load that must be pulled low, an external resistor must be added.

Analog input

AIO

Analog bi-directional

Power pin

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