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GN
D
Reset (reset=H
)Latch (follow
=L)
overflow=H
Clock
5V
Decim
al point control
Toggle (enable=L)
+5V!!
Count on rising edge.
point=L
underflow=H
BR
W/C
RY
(redesigned 02/2004 with 1M
pot as shown above)
Up/D
own counter, m
ax 1MH
z; count latch, overflow latch;
controllable decimal point, adjustable LE
D brightness
(c) 09/2002 by Wolfgang W
ieser
3
A 1
B 15
C 14
D 13
E 12
F 3
G 2
BRW 11
CRY 10
UP9
DN7
RESET5
TE4
LE6
CNT-5
168VSS VDD
CN
T-5P
A 1
B 15
C 14
D 13
E 12
F 3
G 2
BRW 11
CRY 10
UP9
DN7
RESET5
TE4
LE6
CNT-4
168VSS VDD
CN
T-4P A 1
B 15
C 14
D 13
E 12
F 3
G 2
BRW 11
CRY 10
UP9
DN7
RESET5
TE4
LE6
CNT-3168VSS VDD
CN
T-3P
A 1
B 15
C 14
D 13
E 12
F 3
G 2
BRW 11
CRY 10
UP9
DN7
RESET5
TE4
LE6
CNT-2
168VSS VDD
CN
T-2P
A 1
B 15
C 14
D 13
E 12
F 3
G 2
BRW 11
CRY 10
UP9
DN7
RESET5
TE4
LE6
CNT-1
168VSS VDD
CN
T-1P
1 2
CN
T-C
LOC
K
1 2
CN
T-S
UP
PLY
12
CN
T-O
FLW
1 2 3C
NT
-CT
RL
T1
2 31
IC6A
411
A E
S
(LEDBIAS)
A C
R
U$6
Q3
1
S0
3R
04
EN
5
R1
6
S1
7Q
19
Q2
10
S2
11R
212
Q0
13
R3
14
S3
15
OV
ER
FLO
W-LA
TC
H
8 16OV
ER
FLO
W-LA
TC
HP
VDDVSS
1 2IC8A
3 4IC8B
5 6IC8C
98
IC8D
11 10IC8E
13 12IC8F
147VSS VDD
IC8P
1 2 3 4 5
CN
T-D
PS
EL
C2
C3
C4
C5
C6
C7
12
JP11
12
JP1212345678
U$1
12345678
U$2
12345678
U$3
12345678
U$4
12345678
U$5
764219
10
5
83
gfedcba
dp
CCCC
CNT-LED5
764219
10
5
83
gfedcba
dp
CCCC
CNT-LED4
764219
10
5
83
gfedcba
dp
CCCC
CNT-LED3
764219
10
5
83
gfedcba
dp
CCCC
CNT-LED2
764219
10
5
83
gfedcba
dp
CCCC
CNT-LED1
87654321
U$10
87654321
U$11
87654321
U$12
87654321
U$13
87654321
U$14
1 2JP1
R3
R4
AE
SLEDBRIGHT1
40110
40110
40110
40110
40110
BU
Z11
LMC
6484
100k
TL431CLP
4044N
CD74AC04
CD74AC04
CD74AC04
CD74AC04
CD74AC04
CD74AC04
LED7-15-CC
LED7-15-CC
LED7-15-CC
LED7-15-CC
LED7-15-CC
1M
1k
1M