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EMC1187 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC1187
기능 Triple Channel Temperature Sensor
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EMC1187 데이터시트, 핀배열, 회로
EMC1187
Triple Channel 1°C Temperature Sensor with Hardware
Thermal Shutdown and 1.8V SMBus Communications
PRODUCT FEATURES
General Description
The EMC1187 is a high accuracy, low cost, 1.8V System
Management Bus (SMBus) compatible temperature sensor.
Advanced features such as Resistance Error Correction (REC),
Beta Compensation (to support CPU diodes requiring the
BJT/transistor model including 65nm and lower geometry
processors) and automatic diode type detection combine to
provide a robust solution for complex environmental monitoring
applications. The ability to communicate at 1.8V SMBus levels
provides compatible I/O for the advanced processors found in
today’s tablet and smartphone applications.
The EMC1187 monitors three temperature channels (two
external and one internal), providing ±1°C accuracy for both
external and internal diode temperatures.
Additionally, the EMC1187provides 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.
REC automatically eliminates the temperature error caused by
series resistance allowing greater flexibility in routing thermal
diodes. Frequency hopping* and analog filters ensure remote
diode traces can be as far as eight (8) inches without degrading
the signal. 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.
Datasheet
Applications
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
— Supports 65nm and lower geometry CPU thermal
diodes
Pin and register compatible with EMC1423
Automatically determines external diode type and
optimal settings
Resistance Error Correction
Frequency hops the remote sample frequency to reject
DC converter and other coherent noise sources*
Consecutive Alert queue to further reduce false Alerts
Up to 2 External Temperature Monitor
— 25°C typ, ±1°C max accuracy (20°C < TDIODE < 110°C)
— 0.125°C resolution
— Supports up to 2.2nF diode filter capacitor
Internal Temperature Monitor
— ±1°C accuracy
— 0.125°C resolution
3.3V Supply Voltage
1.8V SMBus operation
Programmable temperature limits for ALERT (85°C
default high limit and 0°C default low limit)
Available in small 10-pin 3mm x 3mm DFN RoHS
compliant package
Switching
Current
EMC1187
VDD
DP1
DN1
DP2
DN2
Analog
Mux
ΔΣ ADC
External
Temperature
Register(s)
Internal
Temperature
Register
Internal
Temp Diode
Status Registers
GND
* Technology covered under the US patent 7,193,543.
SMSC EMC1187
SYS_SHDN Limit
Conversion Rate Register
Low Limit Registers
High Limit Registers
CPU
Thermal
diode
Configuration Register
Interupt Masking
SMCLK
SMDATA
ALERT
SYS_SHDN
DATASHEET
VDD = 3.3V 1.8V – 3.3V
VDD
EMC1187
DP1
DN1
Internal
Diode
SMCLK
SMDATA
ALERT
Host
SMBus
Interface
DP2
DN2
SYS_SHDN
Power
Control
Revision 1.0 (07-11-13)




EMC1187 pdf, 반도체, 판매, 대치품
Triple Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications
Datasheet
6.5 Conversion Rate Register 04h / 0Ah . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.6 Limit Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.7 Scratchpad Registers 11h and 12h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.8 Therm Limit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.9 External Diode Fault Register 1Bh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.10 Software Thermal Shutdown Configuration Register 1Dh. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.11 Hardware Thermal Shutdown Limit Register 1Eh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.12 Channel Mask Register 1Fh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.13 Consecutive ALERT Register 22h. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.14 Beta Configuration Registers 25h and 26h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.15 External Diode Ideality Factor Register 27h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.16 High Limit Status Register 35h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.17 Low Limit Status Register 36h. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.18 Therm Limit Status Register 37h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.19 Filter Control Register 40h. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.20 Product ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.21 SMSC ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.22 Revision Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Chapter 7 Typical Operating Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 8 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 9 Datasheet Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Revision 1.0 (07-11-13)
4
DATASHEET
SMSC EMC1187

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EMC1187 전자부품, 판매, 대치품
Triple Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications
Datasheet
Chapter 1 Block Diagram
Switching
Current
DP1
DN1
DP2
DN2
EMC1187
VDD
Analog
Mux
ΔΣ ADC
External
Temperature
Register(s)
Internal
Temperature
Register
SYS_SHDN Limit
Conversion Rate Register
Low Limit Registers
High Limit Registers
Internal
Temp Diode
Status Registers
Configuration Register
Interupt Masking
GND
Figure 1.1 EMC1187 Block Diagram
SMCLK
SMDATA
ALERT
SYS_SHDN
SMSC EMC1187
7
DATASHEET
Revision 1.0 (07-11-13)

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