參數(shù)資料
型號(hào): PCA1487
廠商: NXP Semiconductors N.V.
英文描述: 32 kHz watch circuits with adaptive motor pulse
中文描述: 32千赫的自適應(yīng)電機(jī)脈沖手表電路
文件頁(yè)數(shù): 8/20頁(yè)
文件大小: 118K
代理商: PCA1487
1998 Apr 21
8
Philips Semiconductors
Product specification
32 kHz watch circuits with adaptive motor
pulse
PCA148x series
Correction sequence
(see Fig.7)
If a missing step is detected, a correction sequence is produced. This consists of a small pulse (t
C1
) which gives the motor
a defined position and after 29.30 ms a pulse of stage 6 (t
C2
) to turn the motor.
Fig.7 Correction sequence after a missing motor step with motor connected.
MSA943
MOTOR
PULSE
DETECTION
CORRECTION SEQUENCE
tP
tC1
tD
M1 - M2
V
= 977
μ
s
tC= 30.27 ms tP
tC2= tP
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