W83L771W Datasheet, PDF (14/25 Pages) Winbond – H/W Monitoring IC

W83L771W/G
7.6 Digital Filter
W83L771W/G provides three levels Digital Filter to suppress erroneous remote temperature readings
due to noise. The register address to set digital filter is at Filter and Alert Configure Resister. If set bits
<D2, D1> = <0, 0>, then no filter is selected. If set bits <D2, D1> = <0, 1> or <1, 0>, then filter level 1
is selected. If set bits <D2, D1> = <1, 1>, then level 2 is selected. Figure 7.5.1 shows the step
response of reading remote temperature with different filter level, and Figure 7.5.2 shows the impulse
response.
5
0
4
5
4
0
3
5
3
0
2
50
5
1
0
1
5
2
0
2
5
SAMPLE
No Filter Level
Filter Level 1
Filter Level 2
Figure 7.5.1 Step Response of reading remote temperature
5
0
4
5
4
0
3
5
3
0
2
50
5
11
SA0MPLE ⁵
2
0
2
5
No Filter Level
Filter Level 1
Filter Level 2
Figure 7.6.2 Impulse Response of reading remote temperature
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Publication Release Date: March 06
Revision 0.7