1
FG
FG pulse output.
VCC
2
VCOM
Motor middle point connection.
VCC
3
FR
Motor rotation direction
switching. A low level input
(0~0.3Vcc) causes forward
rotation. A middle level input
(0.3Vcc~0.7cc) makes the
motor locked. And a high level
input (0.7Vcc~Vcc) causes
reverse rotation.
20kΩ
500Ω
VCC
4
5
VCC
U
Power supply
Output pin.
Connect the motor coil.
VCC
6
W
U
7
V
V
W
8
9
GND
FIL
Ground for IC
Motor position detection filter
pin. Connect a capacitor
between this pin and the
VCOM pin.
VCC
Weltrend Semiconductor, Inc.
Proprietary & Confidential
Mar. 4, 2011
Rev. 0.05
Page 3