ASC7521A Datasheet, PDF (1/18 Pages) List of Unclassifed Manufacturers – LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR

aSC7521A
LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR
PRODUCT SPECIFICATION
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.
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
Ordering Information
Pin Configuration
V_DD
1
GND ²
8 _SST
7 _ADD0
D+
3
6 GND
aSC7521A
D- ₄
5 ADD1
Applications
Desktop and Notebook Computers
Application Diagram
3.3V
CPU
1
3
4
aSC7521A
SST
SST ⁸
Interface
2, 6
5 _ADD1
7
ADD0
Part Number Package
Temp. Range and Operating
Voltage
aSC7521AM8 8-Lead MSOP
Ayww – Assembly site, year, workweek
-40°C to 125°C, 3.3V
© Andigilog, Inc. 2006
-1-
www.andigilog.com
Marking
521A
Ayww
Supplied In
2500 units Tape &
Reel
October 2006 - 70A05011