PCA1465 データシートの表示（PDF） - NXP Semiconductors.
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PCA1465 Datasheet PDF : 24 Pages
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Philips Semiconductors
32 kHz watch circuits with adaptive motor
pulse
Product specification
PCA146x series
Correction sequence (see Fig.8)
If a missing step is detected, a correction sequence is produced. This consists of a small pulse (tC1) which gives the motor
a defined position and after 29.30 ms a pulse of stage 8 (tC2) to turn the motor.
VM1 - M2
MOTOR
PULSE
DETECTION
tP
tD
CORRECTION SEQUENCE
t C1 = 977 µs
t C = 30.27 ms t P
t C2 = t P
MSA943
Fig.8 Correction sequence after a missing motor step with motor connected.
1998 Apr 21
10
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