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4-16. IC BLOCK DIAGRAMS
• MAIN (1/2) SECTION
IC401 M65850P
14
13
12
11
OSCILLATOR
D/A
1/2 VCC
DO1
CLOCK
MO
AUTO
MAIN
RESET
RESET
CONTROL
MI
D1
DO0
A/D
LPF1
2
3
4
5
1
• MAIN (2/2) SECTION
IC112 MC14052BCP
2X0
1
16
15
2X2
2
14
3
2XCOM
TE
L 13942296513
13
2X3
4
12
2X1
5
6
INH
11
VEE
7
10
VSS
8
• MIC/ECHO SECTION
IC6002 M65850P
14
13
12
11
OSCILLATOR
D/A
1/2 VCC
DO1
CLOCK
MO
AUTO
MAIN
RESET
RESET
CONTROL
MI
D1
DO0
A/D
LPF1
1
2
3
4
5
www
.
24
http://www.xiaoyu163.com
10
9
8
LPF2
20KBIT
SRAM
6
7
IC851 uPC1237HA
VDD
X2
X1
XCOM
X0
X3
A
9
B
1
2
10
9
8
LPF2
20KBIT
SRAM
6
7
x
ao
y
i
http://www.xiaoyu163.com
8
IC402 MC14053BCP
B1
1
B0
2
OPEN
C1
3
C.COM
4
OPEN
CO
5
6
INH
VEE
7
OPEN
VSS
8
OVER LOAD DET
OFFSET DET
Q Q
3
6 7
1 3
LATCH/
AUTORESET
AC OFF
DET
3
4
u163
.
2 9
9 4
2 8
VDD
16
B.COM
15
14
A.COM
13
A1
A0
12
11
A
10
B
9
C
V
ON
CC
F/F
MUTE
1 5
0 5
8
2 9
9 4
5
6
7
m
co
9 9
2 8
9 9
V
CC
8
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