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PCA1461 データシートの表示(PDF) - NXP Semiconductors.
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PCA1461
32 kHz watch circuits with adaptive motor pulse
NXP Semiconductors.
PCA1461 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
µ
s
t
M3
t
M4
t
M1
t
DS
t
DI
t
M2
= 61
µ
s
tMC = 488
µ
s
t
M2
= 61
µ
s
tD
current polarity
not measured
detection
criterion is
satisfied
t
DS
t
DI
t
M2
= 61
µ
s
t
M1
= 244
µ
s
tMC = 488
µ
s
t
M1
= 244
µ
s
t
M2
= 61
µ
s
MSA945
Fig.7 Detection phase of the current waveform in Fig.6.
1998 Apr 21
9
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