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521A

Description
LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR
File Size175KB,18 Pages
ManufacturerETC
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521A Overview

LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR

aSC7521A
L
OW
-V
OLTAGE
1-W
IRE
D
IGITAL
T
EMPERATURE
S
ENSOR
P
RODUCT
S
PECIFICATION
Product Description
The aSC7521A is a high-precision CMOS temperature sensor
and voltage monitor with Simple Serial Transport (SST)
compatible serial digital interface, intended for use in PC
hardware monitor applications.
Communication of device capabilities and temperature
readings takes place over the high-speed bi-directional SST
interface.
The SST temperature sensor provides a means for an analog
signal to travel over a digital bus enabling remote temperature
sensing in areas previously not monitored in the PC. The
temperature sensor supports an internal and external thermal
diode.
Sensor localization is aided by two address pins that
distinguish multiple sensors on the same bus.
The aSC7521A is available in MSOP-8 surface mount
package.
Pin Configuration
V
DD
GND
D+
D-
1
8
SST
ADD0
GND
ADD1
2
7
3
6
aSC7521A
4
5
Features
On-chip and remote temperature sensors
Accuracy:
o
+/- 3°C over operational range
o
Internal +/- 2°C over 40°C to 70°C
o
Remote +/- 1°C over 50°C to 70°C
Operational Range: -40°C to 125°C
Temperature resolution: 0.125°C
1-wire SST serial interface
Negotiable SST signaling rate up to 2-Mbps
Temperature and errors reported over SST
Internally corrected for diode non-ideality and series
resistance
3-state address pins set one of 9 SST bus address
0x48 through 0x50
8-lead MSOP package
MSL-1 per JEDEC J-STD-020C
Pb-free Matte Sn leadfinish & RoHS Compliant
Packages
Applications
Desktop and Notebook Computers
Application Diagram
3.3V
1
3
4
CPU
aSC7521A
5
ADD1
ADD0
SST
Interface
SST
8
7
2, 6
Ordering Information
Temp. Range and Operating
Voltage
-40°C to 125°C, 3.3V
Part Number
aSC7521AM8
Package
8-Lead MSOP
Marking
521A
Ayww
Supplied In
2500 units Tape &
Reel
Ayww – Assembly site, year, workweek
-1-
www.andigilog.com
© Andigilog, Inc. 2006
October 2006 - 70A05011

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521A ASC7521A ASC7521AM8
Description LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR
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