Mostek

SCHEMATIC

CLOCK - 7219-8051-ALARM

Page-2/2

HOURS

MINUTES

SEG-A

7

A

6

B

4

C

2

D

1

E

9

F

10

G

5

DP

3

COMM

SG1

7-SEG-HDSP

HDSP-5503-CC

8

NC

7-SEG-HDSP

SEG-A

7

A

6

B

4

C

2

D

1

E

9

F

10

G

5

DP

3

COMM

SG2

7-SEG-HDSP

HDSP-5503-CC

8

NC

7-SEG-HDSP

SEG-B

SEG-B

SEG-A

7

A

6

B

4

C

2

D

1

E

9

F

10

G

5

DP

3

COMM

SG3

7-SEG-HDSP

HDSP-5503-CC

8

NC

7-SEG-HDSP

SEG-A

7

A

6

B

4

C

2

D

1

E

9

F

10

G

5

DP

3

COMM

SG4

7-SEG-HDSP

HDSP-5503-CC

8

NC

7-SEG-HDSP

SEG-C

SEG-C

SEG-B

SEG-B

SEG-D

SEG-D

SEG-C

SEG-C

SEG-E

SEG-E

SEG-D

SEG-D

SEG-F

SEG-F

SEG-E

SEG-E

SEG-G

SEG-G

SEG-F

SEG-F

SEG-G

SEG-G

SEG-DP

SEG-DP

SEG-DP

SEG-DP

SEG-C

SEG-B

1

2

D6

LED

1

2

D7

LED

DIGIT-5

DIGIT-4

DIGIT-3

DIGIT-2

LED

LED

12VOLT

1

2

LS1

BUZZROUND

ALARM

DIGIT-7

1

2

D8

DIODE-4148

COLLON

ALARM

BUZZER

1

2

3

Q1

NPN

C

B

E

2N2222

PM

P14

9

10

1

8

U5D

4050

HEX BUFFER

MAX 7219

GND

SECONDS

SEG-C

SEG-B

VCC

1

2

D9

LED

1

2

D10

LED

10K

SEG-A

7

A

6

B

4

C

2

D

1

E

9

F

10

G

5

DP

3

COMM

SG5

7-SEG-HDSP

HDSP-5503-CC

8

NC

7-SEG-HDSP

SEG-A

7

A

6

B

4

C

2

D

1

E

9

F

10

G

5

DP

3

COMM

SG6

7-SEG-HDSP

HDSP-5503-CC

8

NC

7-SEG-HDSP

1

2

R6

SEG-B

SEG-B

LED

LED

SEG-C

SEG-C

CLOCK

P10

13

CLK

1

DIN

12

/CS

14

A

16

B

20

C

23

D

21

E

15

F

17

G

7

D3

6

D2

11

D1

2

D0

24

DOUT

19

VCC

9

GND

U6

max7219

8 DIGIT 7SEG DISPLAY

4

GND

8

D7

5

D6

10

D5

3

D4

22

DP

18

ISET

SEG-A

SEG-D

SEG-D

DIN

P11

SEG-B

SEG-E

SEG-E

/CS

P12

SEG-C

SEG-F

SEG-F

DIGIT-6

SEG-D

SEG-G

SEG-G

DIGIT-0

SEG-E

DIGIT-1

SEG-F

DIGIT-2

SEG-G

DIGIT-3

SEG-DP

SEG-DP

DIGIT-4

SEG-DP

DIGIT-5

DIGIT-6

DIGIT-7

DIGIT-1

DIGIT-0

GND

9

10

1

8

U5D

4050

HEX BUFFER

9

10

1

8

U5D

4050

HEX BUFFER

GND

unused gate input grounded