EMC1423/EMC1424 1C Temperature Sensor with Hardware Thermal Shutdown Datasheet PRODUCT FEATURES General Description Applications Notebook Computers The EMC1423 and EMC1424 are high accuracy, low Desktop Computers cost, System Management Bus (SMBus) temperature Industrial sensors. Advanced features such as Resistance Error Embedded applications Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including Features 45nm, 65nm and 90nm processors) and automatic Hardware Thermal Shutdown diode type detection combine to provide a robust triggers dedicated SYS SHDN pin solution for complex environmental monitoring hardware configured range 77C to 112C in 1C steps applications. cannot be disabled or modified by software Support for diodes requiring the BJT/transistor model Additionally, the EMC1423 and EMC1424 provide a supports 45nm, 65nm, and 90nm CPU thermal diodes. hardware programmable system shutdown feature that Automatically determines external diode type and is programmed at part power-up via two pull-up resistor optimal settings values and that cannot be masked or corrupted through Resistance Error Correction the SMBus. External Temperature Monitors 1C Accuracy (60C < T < 100C) DIODE Each device provides 1 accuracy for external diode 0.125C Resolution temperatures and 2C accuracy for the internal diode Supports up to 2.2nF diode filter capacitor temperature. The EMC1423 monitors three temperature Anti-parallel diodes for extra diode support channels (two external and one internal). The EMC1424 Internal Temperature Monitor monitors four temperature channels (three external and 2C accuracy one internal). 3.3V Supply Voltage Programmable temperature limits for ALERT Resistance Error Correction automatically eliminates the Available in Small 10-pin MSOP Lead-free RoHS temperature error caused by series resistance allowing Compliant Package 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 each 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 1C measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications. SMSC EMC1423/EMC1424 DATASHEET Revision 2.0 (08-10-12) 1C Temperature Sensor with Hardware Thermal Shutdown Datasheet Ordering Information: EMC1423-1-AIZL-TR FOR 10-PIN, MSOP LEAD-FREE ROHS COMPLIANT PACKAGE EMC1424-1-AIZL-TR FOR 10-PIN, MSOP LEAD-FREE ROHS COMPLIANT PACKAGE Note: See Table 1.1,Part Selectio for SMBus addressing options. 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 Please contact your SMSC sales representative for additional documentation related to this product such as application notes, anomaly sheets, and design guidelines. 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 (theTerms of Sale Agreemen). 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 SMSCs website at