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© Andigilog, Inc. 2006
www.andigilog.com
October 2006 - 70A05011
aSC7521A
Pin Descriptions
Pin #
Name
Direction
Description
1
VDD (3.3V)
Supply
Supply Voltage, 3.3V +/- 10%
2
GND
Supply
Ground
3
D+
Current Source
Remote Diode Anode or Positive Lead
4
D-
Current Sink
Remote Diode Cathode or Negative Lead
5
ADD1
Input
Device Address Tri-State selector: Ground, Float or VDD select device
address
6
GND
Supply
Ground
7
ADD0
Input
Device Address Tri-State selector: Ground, Float or VDD select device
address
8
SST
Input
Digital Input / Output. SST Bi-directional Data Line.
Figure 1. Block Diagram
On-
Chip
Sensor
Control and SST Interface
ADC
Remote
Diode
Open / Short
ADD1
ADD0
SST
D +
D -
On-Chip Temperature
Remote Temperature
DIB Register
VDD
VSS