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PDF EMC1063 Data sheet ( Hoja de datos )
| Número de pieza | EMC1063 | |
| Descripción | Triple Temperature Sensor | |
| Fabricantes | SMSC Corporation | |
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EMC1063
1°C Triple Temperature
Sensor with Hotter of
Two Zones
PRODUCT FEATURES
Datasheet
General Description
Features
The EMC1063 is a family of System Management Bus
(SMBus) temperature sensors that monitors three
temperature zones, one internal diode and two
externally connected diodes. The EMC1063 is
specifically designed to operate with AMD processor
diodes. Alternately, the External Diode 2 channel can be
configured to measure a standard thermal diode (such
as a 2N3904) with Resistive Error Correction active.
An added feature to the EMC1063 is a function that
automatically compares the two external temperature
zones and reports the hotter of the two temperatures.
Selectable conversion rates and standby mode support
low-power operation. The temperature measurement
ranges support two data ranges (and formats), -64°C to
+127°C and -64°C to +191°C.
Designed to Operate with AMD Processor Diodes
Supports two External Temperature Diodes
— ±1°C Accuracy (40°C to 80°C)
— 0.125°C Resolution
— Ideality Factor Configuration
— Accepts 2200pF Cap Across External Diodes for Noise
Suppression
— Optional Resistive Error Correction on External Diode 2
Internal Temperature Diode
— ±3°C Accuracy (0°C to 85°C)
— 0.125°C Resolution
Low Power Operation
— 4uA Standby Current
3.0V to 3.6V Supply
Programmable Conversion Rate
SMBus 2.0 Compliant
— Four SMBus Address Available
Applications
Reports Hotter of Two Diodes with Dual-core CPU
Desktop and Notebook Computers
Hardware Management
Servers
Embedded Applications
Simplified Block Diagram
DP1
DN1
Switching
Current
DP2
DN2
Local Temp
Diode
11-bit
delta-sigma
ADC
External Diode
1 Register
External Diode
2 Register
Internal Diode
Register
Configuration
Register
Digital Mux
and
Byte Interlock
Status Register
SMCLK
SMDATA
SMSC EMC1063
DATASHEET
Revision 1.44 (04-14-08)
1 page  
1°C Triple Temperature Sensor with Hotter of Two Zones
Datasheet
List of Tables
Table 1.1 EMC1063 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 2.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2.2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2.3 Write Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2.4 Read Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2.5 Send Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 2.6 Receive Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 3.1 Supply Current vs. Conversion Rate and ADC Averaging Factor . . . . . . . . . . . . . . . . . . . . . . 12
Table 3.2 EMC1063 Temperature Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 4.1 EMC1063 Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 4.2 Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 4.3 Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 4.4 Conversion Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 4.5 Configuration 2 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 4.6 One Shot Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 4.7 Ideality Configuration Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 4.8 Ideality Factor Look Up Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 4.9 Substrate Diode Ideality Factor Look-Up Table (BJT Model) . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 4.10 Product ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 4.11 Manufacturer ID Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 4.12 Revision Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 6.1 8-Pin MSOP Package Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SMSC EMC1063
5
DATASHEET
Revision 1.44 (04-14-08)
5 Page 
1°C Triple Temperature Sensor with Hotter of Two Zones
Datasheet
Chapter 3 Product Description
The EMC1063 is an SMBus sensor that monitors three temperature zones for use in a personal
computer or embedded environment. The part may be used as a companion to one of SMSC’s broad
line of SIO host devices to perform fan control and thermal management.
The EMC1063 is designed to operate with two AMD thermal diodes. The External diode 2 channel can
be configured with the Resistance Error Correction feature enabled to measure a discrete 2N3904
diode. A typical system is shown in Figure 3.1.
CPU
Thermal
diode
Thermal
diode
CPU
EMC1063
DP1
DN1
DP2
DN2
Internal
Diode
Host
SMBus
SMBus
Interface
Figure 3.1 EMC1063 Diode System
3.1
Power Modes
The EMC1063 has two power modes.
Run Mode - In this mode, the temperature monitors are active and converting at the programmed
conversion rate. The average power dissipation will depend on the conversion rate. When the
EMC1063 is not actively converting a channel, it goes into a lower power wait state.
Standby Mode (power-up default) - in this mode, the EMC1063 is put into a low power state. In the
standby mode, temperature monitoring is disabled. The device will still respond to SMBus
commands.
3.2
One Shot During Standby Mode
The EMC1063 supports a One-Shot command when it is in Standby Mode. Writing to the One-Shot
register will cause the device to power up, perform 1 full set of temperature conversions, then return
to Standby Mode.
3.3 Operation During Run Mode
When the device is active, there are two modes of operation available.
Normal Mode (power-up default) - In this mode of operation, the EMC1063 continuously samples
and updates all of its temperature channels.
Hotter of Two Mode - In this mode, the EMC1063 continuously samples and then compares the
two remote zones. The hotter of the two remote zones is loaded into the External Diode 2 Data
Registers. In addition, the HOTTER bit in the Status register is set or cleared to indicate which
external diode zone is hotter. If the two remote zones are exactly equal to each other, then the
SMSC EMC1063
11
DATASHEET
Revision 1.44 (04-14-08)
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet EMC1063.PDF ] | |
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