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PCA1485U/7 Datasheet(PDF) 7 Page - NXP Semiconductors

Part # PCA1485U/7
Description  32 kHz oscillator, amplitude regulated with excellent frequency stability
PDF  20 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCA1485U/7 Datasheet(HTML) 7 Page - NXP Semiconductors

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1998 Apr 21
7
Philips Semiconductors
Product specification
32 kHz watch circuits with adaptive motor
pulse
PCA148x series
Fig.5 Typical current waveform of a successfully executed motor pulse.
MSA944
MOTOR PULSE
DETECTION PHASE
I M1 - M2
part 1
part 2
detection criterion
is satisfied
t
t DS
t DI
t P
t D
MSA945
MOTOR
PULSE
DETECTION PHASE
M1 - M2
V
t DS
t DI
t M3 t M4 t M1
t
= 61
µs
M2
t
= 244
µs
M1
t
= 488
µs
MC
t
= 61
µs
M2
t D
t P
M1
V
t DS
t DI
t
= 61
µs
M2
t
= 244
µs
M1
t
= 488
µs
MC
t
= 61
µs
M2
t
= 244
µs
M1
detection
criterion is
satisfied
current polarity
not measured
Fig.6 Detection phase of the current waveform in Fig.5.



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