EMC1212-AGZG-TR SMSC, EMC1212-AGZG-TR Datasheet

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EMC1212-AGZG-TR

Manufacturer Part Number
EMC1212-AGZG-TR
Description
Board Mount Temperature Sensors BBUS CMPLINT DUAL TEMP MNTR/BETA COMP
Manufacturer
SMSC
Datasheet

Specifications of EMC1212-AGZG-TR

Lead Free Status / Rohs Status
Lead free / RoHS Compliant
PRODUCT FEATURES
GENERAL DESCRIPTION
T h e E M C 1 2 1 2 i s a t e m p e r a t u r e s e n s o r t h a t
communicates with a host over a single-wire SMSC
BudgetBus™ Sensor Interface. The EMC1212 monitors
one internal diode and one remote temperature zone.
Packaged in a SOT23-5, the EMC1212 provides an
accurate, low-cost, low-current, solution for critical
temperature monitoring in applications such as
embedded systems or computers. When used in
combination with an SMSC Super I/O host, such as a
keyboard controller, a complete thermal management
system is created. A power down mode extends battery
life in portable applications. The internal 11-bit sigma
delta temperature-to-digital converter provides superb
linearity, high accuracy and excellent noise immunity.
The EMC1212 is designed to operate with 65nm or
90nm PNP substrate transistor used as a thermal diode
with the collector connected to ground.
SMSC EMC1212
DN
DP
Comp
Switching
REC
Beta
Current
&
Local Temp
Diode
Analog Mux
anti-aliasing
SIMPLIFIED BLOCK DIAGRAM
filter
and
DATASHEET
EMC1212
delta-sigma
APPLICATIONS
FEATURES
11-bit
ADC
Desktop and Notebook Computers
Hardware Management
Single Wire BBUS Interface
Resistance Error Correction
Beta Compensation
External Temperature Monitor
Internal Temperature Monitor
Supply:
— 0.125°C resolution
— ±1°C Accuracy 60°C to 100°C
— Diode Fault Reporting
— Range 0°C to +85°C
— 0.125°C resolution
— ±1.5°C Accuracy 50°C to 70°C
— 3.0V to 3.6V
— <5uA in Standby
BBUS Compliant Dual
Temperature Monitor
with Beta Compensation
EMC1212
Temperature
Registers
Interface
BBUS
Revision 1.1 (02-07-07)
BBUS
Datasheet

Related parts for EMC1212-AGZG-TR

EMC1212-AGZG-TR Summary of contents

Page 1

... A power down mode extends battery life in portable applications. The internal 11-bit sigma delta temperature-to-digital converter provides superb linearity, high accuracy and excellent noise immunity. The EMC1212 is designed to operate with 65nm or 90nm PNP substrate transistor used as a thermal diode with the collector connected to ground. Switching ...

Page 2

... EMC1212-AGZQ-TR FOR 5 PIN, SOT LEAD-FREE ROHS COMPLIANT PACKAGE EVALUATION BOARD AVAILABLE UPON REQUEST (EVB-KBC1100) 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2007 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 ...

Page 3

... VDD 2 GND 3 BBUS SMSC EMC1212 VDD GND 3 4 BBUS Figure 1.1 Pin Diagram for EMC1212 Table 1.1 Pin Description NAME Supply Voltage Ground Serial bus interface to SMSC host Remote diode positive terminal Remote diode negative terminal 3 DATASHEET DP FUNCTION Revision 1.1 (02-07-07) ...

Page 4

... DD Supply Current I DD Supply Current I DD Temperature Accuracy Temperature Resolution Revision 1.1 (02-07-07) BBUS Compliant Dual Temperature Monitor with Beta Compensation Table 2.1 EMC1212 Maximum Ratings = 0°C to 85°C, all Typical values at T MIN TYP MAX UNIT DC Power 3 3.3 3.6 V 700 ...

Page 5

... BudgetBus Protocol The EMC1212 communicates with a host controller, such as the SMSC KBC1100, through the proprietary single wire SMSC BudgetBus™ Sensor Interface known as BBUS. The BBUS is a single wire serial communication protocol between the computer host and its peripheral devices. Please refer to the BBUS Specification for detailed information about the modes of operation ...

Page 6

... PWRDN Revision 1.1 (02-07-07) BBUS Compliant Dual Temperature Monitor with Beta Compensation '0' t INACTIVE t LOW Figure 2.1 BudgetBus Bit Timing 6 DATASHEET Datasheet t FALL t RISE '1' t HIGH SMSC EMC1212 ...

Page 7

... Active Mode: The host initiates active mode by enabling a weak pull up on the BBUS. In this mode, the EMC1212 continuously converts temperature data. During the time that the device is actively converting a temperature, the BBUS is in tri-state mode, and the Host places a weak pull-up on the bus to prevent it from floating ...

Page 8

... CPU substrate PNP Figure 3.2 Block Diagram of Temperature Monitoring The temperature data format is an offset 2’s complement with a range of -64°C to +191.875°C as shown in Table 3.1. Table 3.1 EMC1212 Temperature Data Format TEMPERATURE (°C) Diode Fault or -64 -63.875 - Revision 1.1 (02-07-07) BBUS Compliant Dual Temperature Monitor with Beta Compensation η ...

Page 9

... Figure 3.3 External Diode Configuration 3.3 Resistance Error Correction The EMC1212 includes resistance error correction implemented in the analog front end of the chip. Resistance error correction is an automatic feature that eliminates the need to characterize and compensate for the series resistance in the external diode lines. ...

Page 10

... Because the beta compensation circuit is designed to work with PNP substrate transistors, the EMC1212 should not be used with diode-connected transistors (such as the 2N3904) or CPUs that implement the thermal diode as a two-terminal diode. The beta compensation circuit is not present in the EMC1202 availabe from SMSC, and this device is an excellent companion to AMD CPUs ...

Page 11

... BBUS Compliant Dual Temperature Monitor with Beta Compensation Datasheet Chapter 4 Typical Operating Curves To be determined based on characterization. SMSC EMC1212 11 DATASHEET Revision 1.1 (02-07-07) ...

Page 12

... ± 0.025 . IAL - ISH - P RIN T W ITH " FIT" ING Figure 5.1 EMC1212 Package Outline and Parameters HISTO ION TION A INITIA "N " BER O F LEAD ± AXIMU M MAT ER IAL ITIO "D " FLASH , SIO 0. PER "E 1" LEAD F LAS SIO N . ...

Page 13

... BBUS Compliant Dual Temperature Monitor with Beta Compensation Datasheet 5.1 Package Markings All devices will be marked on the top side with “212” and a lead free symbol. On the bottom, they will be marked with YYWW (2 digits for work week, 2 digits for year) SMSC EMC1212 13 DATASHEET Revision 1.1 (02-07-07) ...

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