EMC2101-R-ACZL-TR datasheet(1/55 Pages) SMSC

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SMSC EMC2101

Revision 2.53 (03-13-07)

DATASHEET

Datasheet

PRODUCT FEATURES

EMC2101

SMBus Fan Control

with 1°C Accurate

Temperature Monitoring

GENERAL DESCRIPTION

The EMC2101 is an SMBus 2.0 compliant, integrated

fan control solution complete with two temperature

monitors, one external and one internal. Each

temperature channel has programmable high limits that

can assert an interrupt.

The fan drive is selectable as a Pulse Width Modulator

(PWM) or Linear (DAC) output. The fan control output,

whether the PWM or DAC drive circuit, uses an eight

position look-up table to allow the user to program the

fan speed profile based on temperature. The DAC out-

put ranges from 0V to VDD with up to 6 bit resolution

while the PWM output has a range of 0% to 100% with

up to 64 steps.

The EMC2101 has an option to automatically upload the

contents of an attached SMBus compatible EEPROM for

auto-programming upon power up.

Advanced thermal sensing enables reduced validation

and characterization time as well as accurately operat-

ing with smaller-geometry processors. Resistance Error

Correction (REC) automatically corrects the offset errors

of board trace and device resistance, up to 100

Ω. Auto-

matic Beta Compensation allows the user the flexibility

to design applications that include processor substrate

transistors.

FEATURES

Automatic Beta Compensation

Resistance Error Correction

Self-programming with available SMBus compatible

EEPROM

Selectable PWM or DAC fan driver output

Temperature Monitors

— External channel ±1°C accuracy

— Internal channel ±2°C accuracy

3.3 Volt Operation (5 Volt Tolerant Input Buffers)

SMBus 2.0 Compliant Interface, supports TIMEOUT

8-Pin MSOP Lead-free RoHS Compliant Packages

8-Pin SOIC Lead-free RoHS Compliant Package

APPLICATIONS

Graphics Processors

Embedded Application Fan Drive

PWM Controller + Temp Sensor

BLOCK DIAGRAM

Internal

Temp Diode

Switching

Current

Analog

Mux

Internal

Temperature

Register

Internal High Limit Register

External High Limit Register

Address Pointer Register

Conversion Rate Register

Interupt Masking

Status Registers

Configuration Register

ALERT / TACH

SMCLK

SMDATA

DP

DN

VDD

GND

EMC2101

External

Temperature

Register

ΔΣ ADC

FAN

PWM Driver

Fan Control

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External TCRIT Limit Register

DAC Driver

Fan Control

Look-Up Table

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
SMSC Corporation	EMC2101-R-ACZL-TR	1Mb / 57P	SMBus Fan Control with 1째C Accurate Temperature Monitoring
Microchip Technology	EMC2101-R-ACZL-TR	1Mb / 56P	SMBus Fan Control with 1°C Accurate Temperature Monitoring Revision A July 2022

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX6654	222Kb / 16P	1째C Accurate Remote/Local Temperature Sensor with SMBus Serial Interface Rev 2; 1/02
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