EMC1422 1°C Temperature Sensor with Hardware Thermal Shutdown PRODUCT FEATURES Data Brief General Description Applications The EMC1422 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm, 65nm and 90nm processors) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications. Additionally, the EMC1422 provides a hardware programmable system shutdown feature that is programmed at part power-up via two pull-up resistor values and that cannot be masked or corrupted through the SMBus. Notebook Computers Desktop Computers Industrial Embedded applications Features Hardware Thermal Shutdown — triggers dedicated SYS_SHDN pin — hardware configured range 77°C to 112°C in 1°C steps — cannot be disabled or modified by software Support for diodes requiring the BJT/transistor model Pin compatible with ADM1032, MAX6649, and LM99 Automatically determines external diode type and optimal settings Resistance Error Correction External Temperature Monitors — supports 45nm, 65nm, and 90nm CPU thermal diodes. Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature. The EMC1422 monitors two temperature channels (one external and one internal). Resistance Error Correction automatically eliminates the temperature error caused by series resistance allowing greater flexibility in routing thermal diodes. Beta Compensation eliminates temperature errors caused by low, variable beta transistors common in today's fine geometry processors. The automatic beta detection feature monitors the external diode/transistor and determines the optimum sensor settings for accurate temperature measurements regardless of processor technology. This frees the user from providing unique sensor configurations for each temperature monitoring application. These advanced features plus ±1°C measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications. Internal Temperature Monitor 3.3V Supply Voltage Programmable temperature limits for ALERT Available in Small 8-pin MSOP Lead-free RoHS Compliant Package SMSC EMC1422 — ±1°C Accuracy (60°C < TDIODE < 100°C) — 0.125°C Resolution — Supports up to 2.2nF diode filter capacitor — ±2°C accuracy PRODUCT PREVIEW Revision 2.0 (08-10-12) 1°C Temperature Sensor with Hardware Thermal Shutdown Order Numbers: EMC1422-1-ACZL-TR for 8 pin, MSOP Lead-Free RoHS Compliant Package Reel size is 4,000 pieces This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs Copyright © 2012 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 before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders. SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Revision 2.0 (08-10-12) 2 PRODUCT PREVIEW SMSC EMC1422 1°C Temperature Sensor with Hardware Thermal Shutdown Block Diagram VDD SYS_SHDN Limit EMC1422 Switching Current DP1 Internal Temperature Register DN1 Low Limit Registers High Limit Registers Internal Temp Diode SMBus Interface External Temperature Register(s) Digital Mux ΔΣ ADC Limit Comparator Analog Mux Digital Mux Conversion Rate Register SMCLK Configuration Register Status Registers Interupt Masking SMDATA ALERT SYS_SHDN GND Pin Diagram VDD 1 8 SMCLK DP 2 7 SMDATA DN 3 6 ALERT SYS_SHDN 4 5 GND Figure 0.1 EMC1422 Pin Diagram SMSC EMC1422 3 PRODUCT PREVIEW Revision 2.0 (08-10-12) D PIN 1 IDENTIFIER AREA (D/2 X E1/2) e 3 DESCRIPTION - DATE RELEASED BY - - SEE SPEC FRONT PAGE FOR REVISION HISTORY Revision 2.0 (08-10-12) REVISION HISTORY REVISION 3 5 c E E1 SEE DETAIL "A" 2 8X b TOP VIEW 4 PRODUCT PREVIEW END VIEW A2 A C SEATING PLANE A1 ccc C SIDE VIEW 3-D VIEW H C GAUGE PLANE 0.25 SEATING PLANE 0° - 8° 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. 4 L UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MILLIMETERS AND TOLERANCES ARE: L1 DETAIL "A" DECIMAL ±0.1 X.X X.XX ±0.05 X.XXX ±0.025 THIRD ANGLE PROJECTION 80 ARKAY DRIVE HAUPPAUGE, NY 11788 USA ANGULAR ±1° TITLE NAME DIM AND TOL PER ASME Y14.5M - 1994 MATERIAL SCALE: 3/1 FINISH - PRINT WITH "SCALE TO FIT" DO NOT SCALE DRAWING DATE PACKAGE OUTLINE 8 PIN TSSOP, 3x3 MM BODY, 0.65 MM PITCH DRAWN S.K.ILIEV 7/05/04 CHECKED S.K.ILIEV DWG NUMBER S.K.ILIEV Figure 1 8 Pin MSOP / TSSOP Package SCALE 7/07/04 REV MO-8-TSSOP-3x3 7/05/04 APPROVED STD COMPLIANCE 1:1 JEDEC: MO-187 / D D SHEET 1 OF 1 SMSC EMC1422 1°C Temperature Sensor with Hardware Thermal Shutdown Package Outline