ASC7531A ETC2 [List of Unclassifed Manufacturers], ASC7531A Datasheet - Page 8

• Manufacturer Part Number: ASC7531A
• Description: LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

Sensor Command Summary
GetIntTemp()
Returns the temperature of the device’s internal thermal sensor.
Write Data Length:
Read Data Length:
Command Code:
Example bus transaction for a thermal sensor device located at address 0x48 returning a value of 60°C:
GetExtTemp()
Returns the temperature of the external thermal diode.
Write Data Length:
Read Data Length:
Command Code:
GetAllTemps()
Returns a 4-byte block of data containing both the Internal and External temperatures in the following order Internal then External
temperatures.
Write Data Length:
Read Data Length:
Command Code:
GetVolt12V()
Returns the voltage attached to the 12 volt pin.
Write Data Length:
Read Data Length:
Command Code:
Example bus transaction for a multifunction device located at address 0x48 returning a value of 12 volts:
© Andigilog, Inc. 2006
Target Address
Target Address
0x48
0x48
8
8
FCS
8
0x6A
0x1A
FCS
8
Write Length
Write Length
LSB
0x01
0x02
0x00
8
0x00
0x01
0x02
0x01
0x01
0x04
0x00
0x01
0x02
0x10
0x01
0x01
8
8
Figure 9. Get Internal Temperature Command Example
0x00
LSB
8
MSB
8
0x0F
Figure 10. Example Read of 12-Volt Value
Read Length
Read Length
0x02
0x02
8
8
0x2D
FCS
8
0x30
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MSB
8
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Command
0x10
Command
0x00
8
8
0x90
FCS
8
aSC7531A / aSC7531B
December
2006 - 70A05012