1-32 (No.49793)
SECTION 4
Description of major ICs
4.1 BA6956AN (IC830, IC831) : Reversible motor driver
• Block diagram
• Pin function • Truth table
TSD
CONTROL LOGIC
1 2 3 4 5 6 7 8 9
REF
OUT2
RNF
OUT1
VM
Vcc
FIN
GND
RIN
Pin No. Symbol Function
1 VREF Output high voltage level control terminal
2 OUT2 Output terminal for motor
3 RNF GND of driver division
4 OUT1 Output terminal for motor
5 VM Power supply for driver division
6 Vcc Power supply for signal division
7 FIN Input terminal for control logic
8GNDGND
9 RIN Input terminal for control logic
FIN RIN OUT1 OUT2 MODE
H L H L Forward rotation mode
L H L H Reverse rotation mode
H H L L Break Mode
L L OPEN OPEN Stand-by mode
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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