VCC

VCC

GND

X1

24MHz

100n

0u1

Mikroprocesor

VCC

VCC

BUZZER PIEZZO

P10/T2

2

P11/T2EX/SS

3

P12/ECI

4

P13/CEX0

5

P14/CEX1

6

P15/CEX2/MISO

7

P16/CEX3/SCK

8

P17/CEX4/MOSI

9

RXD/P30

11

TXD/P31

13

INT0/P32

14

INT1/P33

15

T0/P34

16

T1/P35

17

RES

10

EA/VP

35

X1

21

X2

20

P00/AD0

43

P01/AD1

42

P02/AD2

41

P03/AD3

40

P04/AD4

39

P05/AD5

38

P06/AD6

37

P07/AD7

36

P20/A08

24

P21/A09

25

P22/A10

26

P23/A11

27

P24/A12

28

P25/A13

29

P26/A14

30

P27/A15

31

ALE/P

33

PSEN/BOOT

32

WR/P36

18

RD/P37

19

VCC

44

VSS

22

PLCC 44

AT89C51RD2 (AT89C51ED2)

P3_2