W83781D Datasheet, PDF (19/53 Pages) Winbond – MONITORING IC

W83781D
PRELIMINARY
+12V
+12V
FAN Out
GND
FAN
Connector
+5V
Pull-up resister
4.7K Ohms
Fan Input
Pin 18/19/20
W83781D
Fan with Tach Pull-Up to +5V
+12V
+12V
+12V
FAN Out
GND
FAN
Connector
Pull-up resister
4.7K Ohms
14K~39K
Fan Input
Pin 18/19/20
10K
W83781D
Fan with Tach Pull-Up to +12V, or Totem-Pole
Output and Register Attenuator
+12V
+12V
FAN Out
GND
FAN
Connector
Pull-up resister
> 1K
Fan Input
Pin 18/19/20
3.9V Zener
W83781D
Fan with Tach Pull-Up to +12V and Zener Clamp
+12V
FAN Out
GND
FAN
Connector
Pull-up resister < 1K
or totem-pole output
> 1K
Fan Input
Pin 18/19/20
3.9V Zener
W83781D
Fan with Tach Pull-Up to +12V, or Totem-Pole
Putput and Zener Clamp
7.4 Temperature Measurement Machine
The temperature data format is 8-bit two -complement for sensor 1 and 9-bit two -complement for
sensor 2/3. The table are expressed the temperature data as following.
Temperature
8-Bit Digital Output
9-Bit Digital Output
8-Bit Binary
8-Bit Hex
9-Bit Binary
9-Bit Hex
+125øC
0111,1101
7Dh
0,1111,1010
0FAh
+25øC
0001,1001
19h
0,0011,0010
032h
+1øC
0000,0001
01h
0,0000,0010
002h
+0.5øC
-
-
0,0000,0001
001h
+0øC
0000,0000
00h
0,0000,0000
000h
-0.5øC
-
-
1,1111,1111
1FFh
- 14 -
Publication Release Date : Nov. 1997
Revision 0.60