PCA1462 데이터 시트보기 (PDF) - NXP Semiconductors.
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PCA1462 Datasheet PDF : 24 Pages
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Philips Semiconductors
32 kHz watch circuits with adaptive motor
pulse
Product specification
PCA146x series
I M1 - M2
MOTOR PULSE
part 1
DETECTION PHASE
part 2
detection criterion
is satisfied
t DS
tP
t DI
tD
Fig.6 Typical current waveform of a successfully executed motor pulse.
t
MSA944
MOTOR
PULSE
DETECTION PHASE
VM1 - M2
tP
VM1
tM1 = 244 µs
t M3 t M4 t M1
t DS
t DI
t M2 = 61 µs
tMC = 488 µs
t M2 = 61 µs
tD
current polarity
not measured
detection
criterion is
satisfied
t DS
t DI
t M2 = 61 µs
t M1 = 244 µs
tMC = 488 µs
t M1 = 244 µs
t M2 = 61 µs
MSA945
Fig.7 Detection phase of the current waveform in Fig.6.
1998 Apr 21
9
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