EMC2302 datasheet(12/70 Pages) MICROCHIP

No de pièce	EMC2302

Description	Single/Multiple RPM-Based PWM Fan Controller

PDF	70 Pages

Scroll/Zoom	100%

Fabricant	MICROCHIP [Microchip Technology]

Site Internet	http://www.microchip.com

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12 / 70 page

EMC2301/2/3/5

DS20006532A-page 12

 2021 Microchip Technology Inc.

3.1.5

PWM1/2/3/4/5 - PULSE WIDTH

MODULATED OUTPUT

This is the output control signal from the Fan Speed

Control 1/2/3/4/5 algorithms. This can be configured as

a push-pull PWM output or an open drain PWM output

(see Section 4.2 “PWM Fan Driver”).

3.1.6

TACH1/2/3/4/5 - TACHOMETER

INPUT

Open drain tachometer input to Fan Speed Control 1/2/

3/4/5 algorithms for feedback. Requires external pull-

up resistor.

3.1.7

CLK - EXT. CLOCK

This is the common 32.768 kHz clock for improved

Tach accuracy and a push-pull clock output to other fan

controllers to synchronize Fan Speed Control.

3.1.8

ALERT - SMBUS ALERT PIN

This pin indicates when an out of limits or other error

condition has occurred. Active low interrupt - requires

external pull-up resistor.

3.1.9

GND, EP13, EP17

The exposed (bottom) pad is ground for the device.

EMC2302 Fiches technique(PDF) 12 Page - Microchip Technology