Turning Ideas Into Reality

ABCircuits www.abcircuits.com POB 123 New Hill NC 27562 (919) 290-7104

Part Number SER7

Copyright © 2014 ABCircuits. Revised September 2014 Page 8 of 11

Expansion Example, Left Justified

ADDRESS 15

ADDRESS 1

DISPLAY

SER7

3

4

1

24

25

26

SEGR

ADR2

SEGL

ADR0

JUST

SIN-

ADR1

ADR3

DISPLAY

ADDRESS 0

DISPLAY

SER7

3

4

1

24

25

26

SEGR

ADR2

SEGL

ADR0

JUST

SIN-

ADR1

ADR3

DISPLAY

DISPLAY

SIN

DISPLAY

SER7

3

4

1

24

25

26

SEGR

ADR2

SEGL

ADR0

JUST

SIN-

ADR1

ADR3

In left justify mode, address 0 is on the left. A one byte message will be displayed on the left digit

of address 0.

Expansion Example, Right Justified

DISPLAY

SER7

3

4

1

24

25

26

SEGR

ADR2

SEGL

ADR0

JUST

SIN-

ADR1

ADR3

ADDRESS 1

DISPLAY

SER7

3

4

1

24

25

26

SEGR

ADR2

SEGL

ADR0

JUST

SIN-

ADR1

ADR3

DISPLAY

ADDRESS 0

ADDRESS 15

SIN

DISPLAY

SER7

3

4

1

24

25

26

SEGR

ADR2

SEGL

ADR0

JUST

SIN-

ADR1

ADR3

DISPLAY

DISPLAY

In right justify mode, address 0 is on the right. A one byte message will be displayed on the right

digit of address 0.

Using Drivers For Brighter D isplays

VCC

VCC

SER7

15

9

16

17

18

19

3

6

7

8

10

11

13

14

22

12

20

23

28

21

4

1

2

5

24

25

26

27

SEGRA

NC

SEGRC

SEGRE

SEGRG

NC

ADR2

SEGLF

SEGLD

SEGLB

SEGRDP

SEGRF

SEGRB

VSS

SEGLE

SEGRD

SEGLA

SEGLG

VDD

SEGLC

ADR0

JUST

DP

SEGLDP

SIN-

ADR1

ADR3

POL

COMMON ANODE

A

B

C

D

E

F

G

RIGHT DISPLAY

DP

G

F

E

D

C

B

A

COM

A

B

C

D

E

F

G

LEFT DISPLAY

DP

G

F

E

D

C

B

A

COM

COMMON ANODE

VCC

ULN2804

1

2

3

4

5

6

7

8

11

12

13

14

15

16

18

17

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

OUT8

OUT7

OUT6

OUT5

OUT4

OUT3

OUT1

OUT2

ULN2804

1

2

3

4

5

6

7

8

11

12

13

14

15

16

18

17

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

OUT8

OUT7

OUT6

OUT5

OUT4

OUT3

OUT1

OUT2

VCC

SIN-

VCC