SMSC EMC2101 PRODUCT PREVIEW Revision 2.54 (06-16-09)
Data Brief
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 100Ω. 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
SMBus Interface
ALERT / TACH
SMCLK
SMDATA
DP
DN
VDD
GND
EMC2101
External
Temperature
Register
ΔΣ ADC
FAN
PWM Driver
Fan Control
Logic
External TCRIT Limit Register
Limit Comparator
DAC Driver
Fan Control
Look-Up Table
ORDER NUMBERS:
EMC2101-ACZL-TR FOR 8-PIN, MSOP LEAD-FREE ROHS COMPLIANT PACKAGE
EMC2101-R-ACZL-TR FOR 8-PIN, MSOP LEAD-FREE ROHS COMPLIANT PACKAGE
EMC2101-ACZT-TR FOR 8-PIN, SOIC LEAD-FREE ROHS COMPLIANT PACKAGE
REEL SIZE IS 4,000 PIECES
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2009 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
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SMBus Fan Control with 1°C Accurate Temperature Monitoring
Revision 2.54 (06-16-09) 2 SMSC EMC2101
PRODUCT PREVIEW
SMBus Fan Control with 1°C Accurate Temperature Monitoring
Revision 2.54 (06-16-09) 3 SMSC EMC2101
PRODUCT PREVIEW
Package Outlines
Figure 1 8-PIN MSOP / TSSOP Package
-SEE SPEC FRONT PAGE FOR REVI SION HISTORY --
c
SEE DETAIL "A"
e
D
E1 E
PIN 1 IDENTIFIER
AREA (D/2 X E1/2)
8X b
L
L1
0.25
0° - 8°
DIM AND TOL PER ASME Y14. 5M - 1994
FINISH
MATERIAL
DECIMAL
X.X
X.XX
X.XXX
80 ARKAY DRIVE
HAUPPAUGE, NY 11 788
USA
ANGULAR
PRINT WITH "SCALE TO FIT"
DO NOT SCALE DRAWING
CHECKED
APPROVED
NAME
DRAWN
DWG NUMBER
SCALE
TITLE
DATE
STD CO MPLIANCE
UNLES S OTHERWISE SPECIFIED
DIMENSIONS ARE I N MILLIMETERS
AND TOLERANCES ARE:
THIRD ANGLE PROJECTION
REV
SHEET
REVISION DES CRIPTION
REVISION HISTORY
RELEASED BYDATE
PACKAGE OUTLINE
8 PIN TSSOP, 3x3 MM BODY, 0.65 MM PITCH
±1°
-
-
±0.1
±0.05
±0.025
S.K.ILIEV
S.K.ILIEV
S.K.ILIEV
7/07/04
7/05/04
1:1
7/05/04
MO-8-TSSOP-3x3
JEDEC: MO-187 / D 1 OF 1
D
C
SEATING PLANE
A
A2
A1
SEATING PLANE
SIDE VIEW
ccc C
GAUGE PLANE
H
3-D VIEW
TOP VIEW
C
3
2
END VIEW
4
3
5
DETAIL "A"
SCALE: 3/1
NOTES:
1. ALL DIMENSIONS ARE IN MILLIMETER.
2. TOLERANCE ON THE TRUE POSITION OF THE LEADS IS ± 0.065mm MAXIMUM.
3. PACKAGE BODY DIMENSIONS "D" AND "E1" DO NOT INCLUDE MOLD PROTRUSIONS OR FLASH.
MAXIMUM MOLD PROTRUSIONS OR FLASH IS 0.15 mm (0.006 INCHES) PER END AND SIDE.
DIMENSIONS "D" AND "E1" ARE DETERMINED AT DATUM PLANE "H".
4. DIMENSION FOR FOOT LENGTH "L" IS MEASURED AT THE GAUGE PLANE 0.25mm ABOVE THE
SEATING PLANE.
5. DETAILS OF PIN 1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE
INDICATED.
SMSC EMC2101 4 Revision 2.54 (06-16-09)
PRODUCT PREVIEW
SMBus Fan Control with 1°C Accurate Temperature Monitoring
Figure 2 8-PIN SOIC Package
A INITIAL RELEASE 7/07/04 S.K.ILIEV
NOTES:
1. ALL DIMENSIONS ARE IN MILLIMETER.
2. TRUE POSITION SPREAD TOLERANCE IS ± 0.125mm AT MAXIMUM MATERIAL CONDITION.
3. PACKAGE BODY DIMENSION "D" DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR
GATE BURRS. MAXIMUM MOLD FLASH, PROTRUSIONS OR GATE BURRS IS 0.15 mm PER
END. DIMENSION "E1" DOES NOT INCLUDE INTERL EAD FLASH OR PROTRUSION.
MAXIMUM INTERLEAD FLASH OR PROTRUSION IS 0.25 mm PER SIDE. "D1" & "E1"
DIMENSIONS ARE DETERMINED AT DATUM PLANE "H".
4. DIMENSIONS "b" & "c" APPLY TO THE FLAT SECTION OF THE LEAD BETWEEN 0.10 TO
0.25 mm FROM THE LEAD TIP.
5. THE CHAMFER FEATURE IS OPTIONAL. IF IT IS NOT PRESENT, THEN A PIN 1 IDENTIFIER
MUST BE LOCATED WITHIN THE INDEX AREA INDICATED.
A
A2
A1
L
L1
SEATING PLANE
SIDE VIEW
ccc C
0
0.25
GAUGE PLANE
H
3-D VIEW
D
8X b
e
TOP VIEW
E1
C
3
INDEX AREA
(D/2 X E1/2)
12
8
E
2 4
END VIEW
c
4
3SEE DETAIL "A"
5
DETAIL "A"
SCALE: 3/1
DECIMAL
X.X
X.XX
X.XXX
MATERIAL
FINISH
STD COMPLIANCE
THIRD ANGLE PROJE CTION
PRINT W ITH "SCALE TO FIT"
DO NOT SCALE DRAWING
APPROVED
ANGULAR
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN MILLIMETERS
AND TOLERANCES ARE:
DI M A ND T O L PE R A SM E Y14.5M - 1994
DRAWN
CHECKED
NAME
SCALE
80 ARKAY DRIVE
HAUPPAUGE, NY 11788
USA
DWG NUMBER
TITLE
DATE
SHEET
REV
REVISIO N HISTORY
DESCRIPTIONREVISION RELEASED BYDATE
S.K.ILIEV
S.K.ILIEV
S.K.ILIEV
±1°
-
-
±0.025
±0.05
±0.1
7/07/04 1:1
7/07/04
7/07/04 A
JEDEC: MS-012 / AA 1 OF 1
8 PIN SOIC, 3.9mm BODY WIDTH, 1.27mm PITCH
PACKAGE OUTLINE
MO-8-SOIC-4.9x3.9
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Microchip:
EMC2101-R-ACZL-TR