M5451B7 datasheet(2/12 Pages) STMICROELECTRONICS

Part #	M5451B7

Description	LED DISPLAY DRIVERS

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Product(s)

M5450, M5451

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Figure 2. Pin Connection

Figure 3. Block Diagram

1

2

3

4

5

6

7

8

9

10

11

12

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

13

14

15

16

17

18

19

20

24

23

22

21

OUTPUT BIT 17

OUTPUT BIT 16

OUTPUT BIT 15

OUTPUT BIT 14

OUTPUT BIT 13

OUTPUT BIT 12

OUTPUT BIT 11

OUTPUT BIT 10

OUTPUT BIT 9

OUTPUT BIT 8

OUTPUT BIT 7

OUTPUT BIT 6

OUTPUT BIT 5

OUTPUT BIT 4

OUTPUT BIT 3

OUTPUT BIT 2

OUTPUT BIT 1

BRIGHTNESS CONTROL

OUTPUT BIT 18

OUTPUT BIT 19

OUTPUT BIT 20

OUTPUT BIT 21

OUTPUT BIT 22

OUTPUT BIT 23

OUTPUT BIT 24

OUTPUT BIT 25

OUTPUT BIT 26

OUTPUT BIT 27

OUTPUT BIT 28

OUTPUT BIT 29

OUTPUT BIT 30

OUTPUT BIT 31

OUTPUT BIT 32

OUTPUT BIT 33

OUTPUT BIT 34

DATA ENABLE FOR M5450

OUTPUT BIT 35 FOR M5451

DATA IN

CLOCK IN

V

DD

VSS

9

10

11

12

13

14

15

16

17

29

30

31

32

33

34

35

36

37

7

8

38

39

OUTPUT BIT 13

OUTPUT BIT 12

OUTPUT BIT 11

OUTPUT BIT 10

OUTPUT BIT 9

OUTPUT BIT 8

OUTPUT BIT 7

N.C.

OUTPUT BIT 6

OUTPUT BIT 32

N.C.

OUTPUT BIT 31

OUTPUT BIT 30

OUTPUT BIT 29

OUTPUT BIT 28

OUTPUT BIT 27

OUTPUT BIT 26

OUTPUT BIT 25

OUTPUT BIT 24

OUTPUT BIT 23

OUTPUT BIT 5

OUTPUT BIT 4

35 OUTPUT BUFFERS

1

18

19

20

24

VDD

35 LATCHES

35-BIT SHIFT REGISTER

21

22

23

RESET

LOAD

SERIAL

DATA

CLOCK

DATA ENABLE (M5450)

OUTPUT35 (5451)

BRIGTHNESS

CONTROL

OUTPUT

BIT 34

100k

Ω

OUTPUT

BIT 1

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