Philips Semiconductors

Product specification

SCN68681

Dual asynchronous receiver/transmitter (DUART)

1998 Sep 04

3

PIN CONFIGURATIONS

1

39

17

28

40

29

18

7

PLCC

6

PIN/FUNCTION

1

NC

16 OP5

31 OP2

2

A1

17 OP7

32 OP0

3

IP3

18 D1

33 TxDA

4A2

19 D3

34 NC

5

IP1

20 D5

35 RxDA

6

A3

21 D7

36 X1/CLK

7

A4

22 GND

37 X2

8

IP0

23 NC

38 RESETN

9

R/WN

24 INTRN

39 CSN

10 DTACKN

25 D6

40 IP2

11

RxDB

26 D4

41 IACKN

12 NC

27 D2

42 IP5

13 TxDB

28 D0

43 IP4

14 OP1

29 OP6

44 VCC

15 OP3

30 OP4

24

23

22

21

20

19

18

17

16

15

28

27

12

10

11

9

8

7

6

5

4

3

2

1

14

13

26

25

29

30

31

32

33

34

35

36

37

38

39

40

DIP

VCC

IP4

IP5

IACKN

IP2

CSN

RESETN

X2

X1/CLK

RxDA

TxDA

OP0

OP2

OP4

OP6

D0

D2

D4

D6

INTRN

A1

IP3

A2

IP1

A3

A4

IP0

R/WN

DTACKN

RxDB

TxDB

OP1

OP3

OP5

OP7

D1

D3

D5

D7

GND

SD00107

Figure 1. Pin Configurations

SYMBOL

PARAMETER

RATING

UNIT

See Note 4

°C

Storage temperature range

-65 to +150

°C

-0.5 to +6.0

V

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any other condition above those indicated in the operation section of this specification is not

implied.

3. This product includes circuitry specifically designed for the protection of its internal devices from damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying any voltages larger than the rated maxima.

supply range.