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REV.-A
Table A-14. STK6722H Terminal Function
Pin No. Signal
Direction
Function
1
Vcc 1
In
+35V DC power
2 CAB
out
CR motor phases A and B common
3 S.out
out
Surge voltage of CR motor coils
4
OA
out
CR motor phase
A drive
5
1A
In CR motor phase A drive pulse
6 IB
In
CR motor phase B drive pulse
7
OB
out
CR motor phase B drive
8 Vref
In
Reference voltage for CR motor phases
9 VCC2
In
+ 5V DC (internal circuit power)
10 Vss
—
GND
11 N.C
—
Not connected
12
Oc
out
CR motor phase C drive
13 Ic In CR motor phase C drive pulse
14 ID In CR motor phase D drive pulse
15
OD out
CR motor phase D drive
16
C CD
out CR motor phases C and D common
17
P.D.
In
Power down
18
Rush
—
Fixed to low