S E M I C O N D U C T O R
CDP6402,
CDP6402C
CMOS Universal Asynchronous
Receiver/Transmitter (UART)
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.
August 1996
Features
• Low Power CMOS Circuitry. . . . . . . . . . 7.5mW (Typ) at
3.2MHz (Max Freq.) at V
DD
= 5V
• Baud Rate
- DC to 200K Bits/s (Max) at. . . . . . . . . . . . . . 5V, 85
o
C
- DC to 400K Bits/s (Max) at. . . . . . . . . . . . . . 10V, 85
o
C
• 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
- CDP6402D, CD . . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
- CDP6402E, CE . . . . . . . . . . . . . . . . . . -40
o
C to +85
o
C
• Replaces Industry Type IM6402 and Compatible with
HD6402
Ordering Information
PACK-
AGE
PDIP
Burn-In
SBDIP
Burn-In
-40
o
C to +85
o
C
TEMP. RANGE
-40
o
C to +85
o
C
5V/200K
BAUD
CDP6402CE
CDP6402CEX
CDP6402CD
10V/400K
BAUD
CDP6402E
-
CDP6402D
PKG.
NO.
E40.6
D40.6
CDP6402CDX CDP6402DX
Pinout
(40 LEAD PDIP, SBDIP)
TOP VIEW
V
DD
NC
GND
RRD
RBR8
RBR7
RBR6
RBR5
RBR4
RBR3
RBR2
RBR1
PE
FE
OE
SFD
RRC
DRR
DR
RRI
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
TRC
EPE
CLS1
CLS2
SBS
PI
CRL
TBR8
TBR7
TBR6
TBR5
TBR4
TBR3
TBR2
TBR1
TRO
TRE
TBRL
TBRE
MR
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1996
File Number
1328.2
5-74
HARRIS [ HARRIS CORPORATION ]
