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W83772G
Publication Release Date: May 22, 2006
- 5 -
Version: 1.0
7.4   Measured Temperature Data Format
The W83772G temperature data format of both remote and local temperature are 16-bit twos
complement format.
Table 1 shows temperature data with 16-bit twos complement data format.
TEMPERATURE
16-BIT DIGITAL OUTPUT
+80癈
0001 0100 0000 0000
+79.875癈
0001 0011 1111 1000
+1癈
0000 0000 0100 0000
+0癈
0000 0000 0000 0000
-1癈
1111 1111 1100 0000
- 5癈
1111 1110 1100 0000
Table 1. Temperature Data Format
7.5   Sensor Error Conditions
When the external diode is opened or shorted, the W83772G will return 0x8001 in response to either
the SST command GetExtTemp() or GetAllTemp() command. It will also return 0x8002/0x8003 when
detecting temperature below -128癈 /above +128癈.
7.6   Conversion Time
W83772G provide 250mS conversion time for monitoring all temperature readings. The conversion
time is related to the internal self-generated clock. The internal clock frequency is dependent on the
temperature. There is 10% frequency deviation in the operating temperature range of 0癈 and 70癈. 
7.7   Address Selection
W83772G has two address pins. These pins may be either tied to Vcc, ground or left open. After the
internal reset ends, W83772G pin ADD0/ADD1 will start to drive and sink current to detect the pin
status  HIGH, LOW or FLOATING and then decide the SST address of W83772G. The address will
be retained as long as the VCC of W83772G is maintained. The recommended pull-up or pull-down
resistor value is 330&. (Please refer to the DC specification for the source and sink current.) The pull-
up power plane must be the same as the VCC power of W83772G.  
 
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