SEMICONDUCT OR

5-74

Features

• Low Power CMOS Circuitry. . . . . . . . . . 7.5mW (Typ) at

• Baud Rate

• 4V to 10.5 Operation

• Automatic Data Formatting and Status Generation

• Fully Programmable with Externally Selectable Word

Length (5 - 8 Bits), Parity Inhibit, Even/Odd Parity, and

1, 1-1/2, or 2 Stop Bits

• Operating Temperature Range

• Replaces Industry Type IM6402 and Compatible with

HD6402

Description

The CDP6402 and CDP6402C are silicon gate CMOS

Universal

Asynchronous

Receiver/Transmitter

(UART)

circuits for interfacing computers or microprocessors to

asynchronous serial data channels. They are designed to

provide the necessary formatting and control for interfacing

between serial and parallel data channels. The receiver

converts serial start, data, parity, and stop bits to parallel

data verifying proper code transmission, parity and stop bits.

The transmitter converts parallel data into serial form and

automatically adds start parity and stop bits.

The data word can be 5, 6, 7 or 8 bits in length. Parity may

be odd, even or inhibited. Stop bits can be 1, 1-1/2, or 2

(when transmitting 5-bit code).

The CDP6402 and CDP6402C can be used in a wide range

of applications including modems, printers, peripherals,

video terminals, remote data acquisition systems, and serial

data links for distributed processing systems.

The CDP6402 and CDP6402C are functionally identical.

They differ in that the CDP6402 has a recommended

operating voltage range of 4V to 10.5V, and the CDP6402C

has a recommended operating voltage range of 4V to 6.5V.

Pinout

(40 LEAD PDIP, SBDIP)

TOP VIEW

Ordering Information

PACK-

AGE

TEMP. RANGE

5V/200K

BAUD

10V/400K

BAUD

PKG.

NO.

PDIP

CDP6402CE

CDP6402E

E40.6

Burn-In

CDP6402CEX

-

SBDIP

CDP6402CD

CDP6402D

D40.6

Burn-In

CDP6402CDX CDP6402DX

13

1

2

3

4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

NC

GND

RRD

RBR8

RBR7

RBR6

RBR5

RBR4

RBR3

RBR2

RBR1

PE

FE

OE

SFD

RRC

DRR

DR

RRI

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

TRC

EPE

CLS1

CLS2

SBS

PI

CRL

TBR8

TBR7

TBR6

TBR5

TBR4

TBR3

TBR2

TBR1

TRO

TRE

TBRL

TBRE

MR

August 1996

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

CDP6402,

CDP6402C

CMOS Universal Asynchronous

Receiver/Transmitter (UART)

File Number

1328.2