EMC1412 datasheet(8/46 Pages) MICROCHIP

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EMC1412

DS20005273B-page 8

 2014-2022 Microchip Technology Inc. and its subsidiaries

3.0

PIN FUNCTION TABLE

The descriptions of the pins are shown in the table below.

3.1

Power Pins (VDD and GND)

These pins are used to supply power to or ground the

device.

3.2

Analog Input/Output (AIO) Pins

(DP, DN)

These pins are used as inputs/outputs for analog

signals.

3.3

Digital Input (DI) Pin (SMCLK)

This pin is used as a digital input. This pin is 5V tolerant

(see Note 1).

3.4

Digital Input/Open-Drain Output

(DIOD) Pin (SMDATA)

This pin is used as a digital input/output. When used as

an output, it is open-drain and requires a pull-up

resistor. This pin is 5V tolerant (see Note 1).

3.5

Open-Drain Digital Output (OD)

Pins (THERM/ADDR, ALERT)

These pins are used as digital outputs. They are

open-drain pins and require a pull-up resistor. These

pins are 5V tolerant (see Note 1).

TABLE 3-1:

PIN FUNCTION TABLE (Note 1)

Pin Number

Pin Name

Pin Type

Description

8-Lead

MSOP

8-Lead

TDFN

VDD

Power

Power Supply

AIO

External diode positive (anode) connection

AIO

External diode negative (cathode) connection

THERM/ADDR

OD (5V)

THERM - Critical THERM output signal. Requires pull-up resistor.

ADDR - Selects SMBus address based on pull-up resistor

GND

Power

Ground pin

ALERT

OD (5V)

Active low digital ALERT output signal. Requires pull-up resistor.

SMDATA

DIOD (5V) SMBus Data input/output. Requires pull-up resistor.

SMCLK

DI (5V)

SMBus Clock input. Requires pull-up resistor.

—

Exposed Thermal Pad. Not internally connected. Grounding is rec-

ommended.

Note 1: For the 5V tolerant pins that have a pull-up resistor (SMCLK, SMDATA, THERM and ALERT), the voltage

difference between VDD and the pull-up voltage must never exceed 3.6V.

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