W83697HF_05 Datasheet, PDF (28/102 Pages) Winbond – LPC I/O

W83697HF
Divisor
1
2 (default)
4
8
16
32
64
128
Nominal
PRM
8800
4400
2200
1100
550
275
137
68
Time per
Revolution
Counts
6.82 ms
153
13.64 ms
153
27.27 ms
153
54.54 ms
153
109.08 ms
153
218.16 ms
153
436.32 ms
153
872.64 ms
153
Table 1.
70% RPM
6160
3080
1540
770
385
192
96
48
Time for 70%
9.74 ms
19.48 ms
38.96 ms
77.92 ms
155.84 ms
311.68 ms
623.36 ms
1246.72 ms
+12V
+5V
+12V
+12V
FAN Out
GND
FAN
Connector
diode
Pull-up resister
4.7K Ohms
Fan Input
Pin 111-113
W83627HF
+12V
FAN Out
GND
FAN
Connector
diode
Pull-up resister
4.7K Ohms
14K~39K
Fan Input
Pin 111-113
10K
W83627HF
Fan with Tach Pull-Up to +5V
Fan with Tach Pull-Up to +12V, or Totem-Pole
Output and Register Attenuator
+12V
+12V
+12V
FAN Out
GND
FAN
Connector
diode
Pull-up resister
> 1K
Fan Input ^{Pin 111-113}
3.9V Zener
W83627HF
+12V
FAN Out
GND
FAN
Connector
diode
Pull-up resister < 1K
or totem-pole output
> 1K
Fan Input
Pin 111-113
3.9V Zener
W83627HF
Fan with Tach Pull-Up to +12V and Zener Clamp
Fan with Tach Pull-Up to +12V, or Totem-Pole
Output and Zener Clamp
Figure 9.4
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Publication Release Date: April 14, 2005
Revision2.0