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PDF EMC1023 Data sheet ( Hoja de datos )
| Número de pieza | EMC1023 | |
| Descripción | Triple Temperature Sensor | |
| Fabricantes | SMSC | |
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EMC1023
1°C Triple Temperature
Sensor with Resistance
Error Correction
Datasheet
General Description
The EMC1023 is a System Management Bus (SMBus)
temperature sensor that is capable of monitoring three
temperature zones. Four unique part numbers can be
ordered, each with a different SMBus Address. The
three temperature zones consist of two external diodes
and one internal monitor.
Extended features include resistance error correction
and ideality factor configuration eliminating both major
sources of temperature measurement error.1 The 11-bit
delta-sigma temperature-to-digital converter provides
superb linearity, excellent noise immunity and
repeatable temperature readings. An extended
temperature format may be selected for compatibility
with a broad range of CPUs. Selectable conversion
rates and standby mode support low-power operation.
1.Patents pending.
Features
■ Resistance Error Correction
■ Ideality Factor Configuration
■ Accepts 2200pF cap for noise suppression
■ Remote Thermal Zones
— ±1°C Accuracy (40°C to 80°C)
— 0.125°C resolution
■ Internal Thermal Zone
— ±3°C Accuracy (0°C to 85°C)
— 0.125°C resolution
■ Low Power; 3.0V to 3.6V Supply
■ Four Unique SMBus Addresses Available
■ Programmable Conversion Rate
■ MSOP-8 3x3mm Package; Green, Lead-Free
Package also available.
Applications
■ Desktop and Notebook Computers
■ Thermostats
■ Smart batteries
■ Industrial/Automotive
DP1
DN1
Switching
Current
DP2
DN2
Local Temp
Diode
Simplified Block Diagram
EMC1023
11-bit
delta-sigma
ADC
Remote Temp
Register 1
Remote Temp
Register 2
Local Temp
Register
Configuration
Register
Digital Mux
and
Byte Interlock
Status Register
SMCLK
SMDATA
SMSC EMC1023
DATASHEET
Revision 1.2 (04-15-05)
1 page  
1°C Triple Temperature Sensor with Resistance Error Correction
Datasheet
Chapter 2 Electrical Characteristics
Table 2.1 Electrical Characteristics
VDD=3.0V to 3.6V, TA= 0°C to +85°C, Typical values at TA = 27°C unless otherwise noted
PARAMETER
SYMBOL MIN TYP MAX UNITS
CONDITIONS
DC Power
Supply Voltage
Average Operating Current
Internal Temperature Monitor
VDD
IDD
IPD
Temperature Accuracy
Temperature Resolution
External Temperature Monitor
Temperature Accuracy
Remote Diode 40°C to 80°C
Remote Diode 0°C to 125°C
Temperature Resolution
ADC
Conversion Time for all three sensors
Wake-up from STOP mode
(During one shot command or
transition to RUN mode)
Voltage Tolerance (SMDATA,SMCLK)
Voltage at pin
SMBus Interface (SMDATA,SMCLK)
VTOL
Input High Level
Input Low Level
Input High/Low Current
Hysteresis
VIH
VIL
IIH/IIL
Input Capacitance
Output Low Sink Current
SMBus Timing
Clock Frequency
Spike Suppression
FSMB
Bus free time Start to Stop
Hold time Start
TBUF
THD:STA
3.0 3.3 3.6 V
36 42 µA
2 4 µA
±1 ±3 °C
0.125
°C
±1 °C
±3 °C
0.125
°C
62 ms
1 ms
-0.3 5.5 V
2.0 V
0.8 V
-1 1 µA
500 mV
5 pF
6 mA
10 400 kHz
50 ns
1.3 µs
0.6 µs
1 conversions/s
Standby mode
0°C≤TA≤85°C
10°5C°C≤T≤AT≤A8≤57°0C°C
SMDATA = 0.6V
SMSC EMC1023
5
DATASHEET
Revision 1.2 (04-15-05)
5 Page 
1°C Triple Temperature Sensor with Resistance Error Correction
Datasheet
4.4 Register Allocation
See Table 4.1, “Register Table,” on page 11 for a description of registers that are accessible through
the SMBus:
Table 4.1 Register Table
READ
ADDRESS
(HEX)
00
23
01
10
F8
F9
FA
FB
FC
FD
02
03
N/A
27
28
ED
FE
FF
WRITE
ADDRESS
(HEX)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
09
0F
27
28
N/A
REGISTER NAME
Legacy Format Internal Temperature High Byte
Legacy Format Internal Temperature Low Byte
Legacy Format Remote Temperature 1 High Byte
Legacy Format Remote Temperature 1 Low Byte
Legacy Format Remote Temperature 2 High Byte
Legacy Format Remote Temperature 2 Low Byte
Extended Format Remote Temperature 1 High Byte
Extended Format Remote Temperature 1 Low Byte
Extended Format Remote Temperature 2 High Byte
Extended Format Remote Temperature 2 Low Byte
Status register
Configuration register
One Shot Command
Remote 1 Ideality Factor
Remote 2 Ideality Factor
Product ID
N/A Manufacturer ID
N/A Revision Number
DEFAULT
VALUE
(HEX)
00
00
00
00
00
00
00
00
00
00
00
47
--
12
12
04 (-1)
05 (-2)
06 (-3)
07 (-4)
5D
01
During Power on Reset (POR), the default values are stored in the registers. A POR is initiated when
power is first applied to the part and the voltage on the VDD supply surpasses the POR level as
specified in the electrical characteristics. Any reads to undefined registers will return 00h. Writes to any
undefined registers will not have an effect.
The EMC1023 uses an interlock mechanism that prevents changes in register content when fresh
readings come in from the ADC during successive reads from a host. When the High Byte is read, the
last conversion value is latched into the High Byte and Low Byte. Please note that the interlock
mechanism is only effective when reading the High Byte first.
SMSC EMC1023
11
DATASHEET
Revision 1.2 (04-15-05)
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet EMC1023.PDF ] | |
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