KSI-W001-000

3

Pin Configuration

Pin Description

: PIN 40 (DIP40), PIN 44 (PLCC44)

Supply voltage during normal, Idle and power down operations.

: PIN 20 (DIP40), PIN 22 (PLCC44)

Circuit ground.

Port 0

: PIN 32~39 (DIP40), PIN 36~43 (PLCC44)

Port 0 is an 8bit open drain bi-directional I/O port. Port 0 pins that have 1's

written to the them float, and in that state can be used as high impedance inputs.

Port 0 is also the multiplexed low-order address and data bus during accesses to

external program and data memory.

In this application it uses strong internal pullups when emitting 1's.

SD60C31/P SD60C51/P

44PLCC

7

8

9

10

12

11

13

14

15

16

17

39

38

37

36

34

35

33

32

31

30

29

P1.5

P1.6

P1.7

RST

RxD/P3.0

NC

TxD/3.1

INT0/P3.2

INT1/P3.3

T0/P3.4

T1/P3.5

P0.4/AD4

P0.5/AD5

P0.6/AD6

P0.7/AD7

NC

ALE/PROG

PSEN

P2.7/A15

P2.6/A14

P2.5/A13

40DIP

T2/P1.0

T2EX/P1.1

P1.2

P1.3

P1.4

P1.5

P1.6

P1.7

RST

RxD/P3.0

INT0/P3.2

TxD/P3.1

INT1/P3.3

T0/P3.4

T1/P3.5

WR/P3.6

RD/P3.7

XTAL2

XTAL1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

P0.0/AD0

P0.1/AD1

P0.2/AD2

P0.3/AD3

P0.4/AD4

P0.5/AD5

P0.6/AD6

P0.7/AD7

PSEN

ALE/PROG

P2.7/A15

P2.6/A14

P2.5/A13

P2.4/A12

P2.3/A11

P2.2/A10

P2.1/A9

P2.0/A8

DIP40

PLCC44