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FCE196

C8

10

µF

100 nF

C9

100 nF

C7

100 nF

470 nF

80C51

P1-0

P1-1

P1-2

P1-3

P1-4

P1-5

P1-6

P1-7

RST

P3-0

P3-1

P3-2

P3-3

P3-4

P3-5

P3-6

P3-7

XTAL2

XTAL1

VSS

VCC

P0-0

P0-1

P0-2

P0-3

P0-4

P0-5

P0-6

P0-7

EA

ALE

PSEN

P2-7

P2-6

P2-5

P2-4

P2-3

P2-2

P2-1

P2-0

IC2

IC1

VDD

VDD

28

27

26

25

24

23

22

21

30

29

38

37

36

35

34

33

32

31

40

39

1

2

3

4

5

15

6

7

8

9

10

16

17

18

19

20

11

12

13

14

TDA8002CG

C5I

C6I

C7I

C8I

C1I

C2I

C3I

C4I

C4

C3

C2

C1

C8

C7

C6

C5

K2

33 pF

33 pF

14.745 MHz

VDD

C2

10

µF

C1

100 nF

VDD

J1 1

3.3 V or 5 V

J1 2

ground

1

2

3

4

5

6

7

8

AUX1UC

STROBE

AUX2UC

CS

ALARM

CLKSEL

CLKDIV1

CLKDIV2

100 nF

470 nF

24

23

22

21

20

19

18

17

AUX2

RST

CLK

VCC

AUX1

CMDVCC

CV/TV

PRES

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

CARD READ

Fig.17 Application diagram (for more details, see

“Application note AN98054”).

TDA8002C should be placed as close as possible to the card reader.

(1) Contact normally open.

(3) C4 close to C1 contact of card reader.

(4) C5 close to VUP pin of TDA8002C.

(5) C6 as close as possible to pins S1 and S2.

CLK line may be shielded with respect to other lines.

A good ground plane is recommended.