ICM7249_01 Datasheet, PDF (5/9 Pages) Intersil Corporation – 5 1/2 Digit LCD, Micro-Power Event/Hour Meter

Timing Waveforms (Continued)
S/S
ICM7249
TIMING ACTIVE
BP
W
ON
SEGMENTS
OFF
SEGMENTS
1
WINK GOES IN PHASE
16
17
WINK GOES OUT PHASE
FIGURE 3. WINK WAVEFORMS IN TIMING MODES
COUNT WITH OR WITHOUT DEBOUNCE
S/S VALID
S/S INVALID
S/S VALID
t_DE > 12.5ms
t_DE
COUNT WITHOUT DEBOUNCE
UNKNOWN RESULTS WITH DEBOUNCE
10ms < t_DE < 12.5ms
40Hz < f < 50Hz
t_DE
COUNT WITHOUT DEBOUNCE
ONE COUNT WITH DEBOUNCE
5µs ≤ t_DE ≤ 10ms
50Hz ≤ f ≤ 120kHz
FIGURE 4. START/STOP INPUT DEBOUNCE FILTERING IN COUNTING MODES
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