SyncMOS Technologies International, Inc.

SM89516

8-Bits Micro-controller

With 64KB flash & 1KB RAM embedded

Specifications subject to change without notice contact your sales representatives for the most recent information.

Ver 2.1 SM89516 08/2006

4

Pin Description

40L

PDIP

Pin#

44L

QFP

Pin#

44L

PLCC

Pin#

Symbol

Active

I/O

Names

1

40

2

P1.0

i/o

bit 0 of port 1

2

41

3

P1.1

i/o

bit 1 of port 1

3

42

4

P1.2

i/o

bit 2 of port 1

4

43

5

P1.3

i/o

bit 3 of port 1

5

44

6

P1.4

i/o

bit 4 of port 1

6

1

7

P1.5

i/o

bit 5 of port 1

7

2

8

P1.6

i/o

bit 6 of port 1

8

3

9

P1.7

i/o

bit 7 of port 1

9

4

10

RES

H

i

Reset

10

5

11

P3.0/RXD

i/o

bit 0 of port 3 & Receiver data

11

7

13

P3.1/TXD

i/o

bit 1 of port 3 & Transmit data

12

8

14

P3.2/#INT0

L/-

i/o

bit 2 of port 3 & low true interrupt 0

13

9

15

P3.3/#INT1

L/-

i/o

bit 3 of port 3 & low true interrupt 1

14

10

16

P3.4/T0

i/o

bit 4 of port 3 & Timer 0

15

11

17

P3.5/T1

i/o

bit 5 of port 3 & Timer 1

16

12

18

P3.6/#WR

L/-

i/o

bit 6 of port 3 & external memory write

17

13

19

P3.7/#RD

L/-

i/o

bit 7 of port 3 & external memory read

18

14

20

XTAL2

o

Crystal out

19

15

21

XTAL1

i

Crystal in

20

16

22

VSS

Sink Voltage, Ground

21

18

24

P2.0/A8

i/o

bit 0 of port 2 & bit 8 of ext. memory address

22

19

25

P2.1/A9

i/o

bit 1 of port 2 & bit 9 of ext. memory address

23

20

26

P2.2/A10

i/o

bit 2 of port 2 & bit 10 of ext. memory address

24

21

27

P2.3/A11

i/o

bit 3 of port 2 & bit 11 of ext. memory address

25

22

28

P2.4/A12

i/o

bit 4 of port 2 & bit 12 of ext. memory address

26

23

29

P2.5/A13

i/o

bit 5 of port 2 & bit 13 of ext. memory address

27

24

30

P2.6/A14

i/o

bit 6 of port 2 & bit 14 of ext. memory address

28

25

31

P2.7/A15

i/o

bit 7 of port 2 & bit 15 of ext. memory address

29

26

32

#PSEN

L

o

program storage enable

30

27

33

ALE

-

o

address latch enable

31

29

35

#EA

L

i

External access

32

30

36

P0.7/AD7

i/o

bit 7 of port 0 & data/address bit 7 of ext. memory

33

31

37

P0.6/AD6

i/o

bit 6 of port 0 & data/address bit 6 of ext. memory

34

32

38

P0.5/AD5

i/o

bit 5 of port 0 & data/address bit 5 of ext. memory

35

33

39

P0.4/AD4

i/o

bit 4 of port 0 & data/address bit 4 of ext. memory

36

34

40

P0.3/AD3

i/o

bit 3 of port 0 & data/address bit 3 of ext. memory

37

35

41

P0.2/AD2

i/o

bit 2 of port 0 & data/address bit 2 of ext. memory

38

36

42

P0.1/AD1

i/o

bit 1 of port 0 & data/address bit 1 of ext. memory

39

37

43

P0.0/AD0

i/o

bit 0 of port 0 & data/address bit 0 of ext. memory

40

38

44

VDD

Drive Voltage, +5 Vcc

17

23

P4.0

i/o

bit 0 of Port 4

28

34

P4.1

i/o

bit 1 of Port 4

39

1

P4.2

i/o

bit 2 of Port 4

6

12

P4.3

i/o

bit 3 of port 4