EMC1063_08 Datasheet, PDF (1/26 Pages) SMSC Corporation – 1°C Triple Temperature Sensor

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)