AudioArts Engineering D-70 - Clock;Timer Display (CLD-70) Schematic

600 Industrial Drive
New Bern, NC 28562
- Sergey Averin -
1 OF 1CLD-220D PCB
Clock/Timer Display Schematic Sheet 1 of 1
W# 700575
29S0024
SA
SA
JBB 6-9-03
CLD-220
C
D-70/Aug 2003
page 11 - 7
CHECKED
ISSUED
DRAWN
CONTRACT NO.
APPROVALS DATE
SCALE SHEET
D
REVDWG. NO.FSCM NO.SIZE
87654321
12345678
A
B
C
D D
C
B
A
R7 10
R6 10
GND
VCC
0.1uF
C5
GND
VCC
0.1uF
C6
100 R3
R8100
100 R2
100 R5
GND DS90C032
1
2
3
4
5
6
7
9
10
11
12
13
14
15
U2
OUTD
OUTC
OUTB
OUTA
__
EN
D-
D+
C-
C+
B-
B+
A-
A+
EN
GND
VCC
100uF
c1
GND
VCC
100uF
C4
CT1
19
17
15
13
11
9
7
5
3
1
18
16
14
12
10
20
2
4
6
8
CT2
19
17
15
13
11
9
7
5
3
1
18
16
14
12
10
20
2
4
6
8
GND
VCC
0.1uF
C7
VCC
GND
VCC
0.1uF
C8
VCC
R12 220
VCC
VCC
VCC
R9 220
R10 220
R11 220
GND
GND
GND
GND
VCC
0.1uF
c2
GND
VCC
0.1uF
C3
22.1K
R4
22.1K
R1
VCC
VCC
SW4
43
21
SW3
43
21
12
34
SW2
12
34
SW1
13
22
17
15
23
20
16
14
18
12
21
1
19
8
5
10
7
6
11
2
3
24
U3
V+
MAX7219
ISET
DOUT
DIN
CLK
LOAD
DIG0
DIG1
DIG2
DIG3
DIG4
DIG5
DIG6
DIG7
SEG A
SEG B
SEG C
SEG D
SEG E
SEG F
SEG G
SEG DP
13
22
17
15
23
20
16
14
18
12
21
1
19
8
5
10
7
6
11
2
3
24
U1
V+
MAX7219
ISET
DOUT
DIN
CLK
LOAD
DIG0
DIG1
DIG2
DIG3
DIG4
DIG5
DIG6
DIG7
SEG A
SEG B
SEG C
SEG D
SEG E
SEG F
SEG G
SEG DP
10
9
8
7
6
5
4
3
2
1
DS3
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
DS4
10
9
8
7
6
5
4
3
2
1
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
DS1
10
9
8
7
6
5
4
3
2
1
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
DS2
10
9
8
7
6
5
4
3
2
1
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
1
2
3
4
5
6
7
8
9
10
DS5
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
1
2
3
4
5
6
7
8
9
10
DS6
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
1
2
3
4
5
6
7
8
9
10
DS7
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
1
2
3
4
5
6
7
8
9
10
DS8
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
10
9
8
7
6
5
4
3
2
1
DS9
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
10
9
8
7
6
5
4
3
2
1
DS10
COM2
COM1
dp
g
d
c
b
a
b
a
f
g
dp
c
d
e
f
e
HOLD
RESET
START/STOP
AUTO
CLOCK: HOURS CLOCK: MINUTES CLOCK: SECONDS
TO CLK-220 PCBTO CLK-220 PCB
T I M E R
C L O C K
TIMER: MINUTES TIMER: SECONDS