CDP6402C Harris Corporation, CDP6402C Datasheet

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CDP6402C

Manufacturer Part Number
CDP6402C
Description
CMOS Universal Asynchronous Receiver/Transmitter (UART)
Manufacturer
Harris Corporation
Datasheet

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August 1996
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
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
• Operating Temperature Range
• Replaces Industry Type IM6402 and Compatible with
Ordering Information
Pinout
PDIP
SBDIP
- DC to 200K Bits/s (Max) at. . . . . . . . . . . . . . 5V, 85
- DC to 400K Bits/s (Max) at. . . . . . . . . . . . . . 10V, 85
Length (5 - 8 Bits), Parity Inhibit, Even/Odd Parity, and
1, 1-1/2, or 2 Stop Bits
- CDP6402D, CD . . . . . . . . . . . . . . . . . -55
- CDP6402E, CE . . . . . . . . . . . . . . . . . . -40
HD6402
PACK-
Burn-In
Burn-In
AGE
©
Harris Corporation 1996
S E M I C O N D U C T O R
TEMP. RANGE
-40
-40
o
o
C to +85
C to +85
o
o
C
C
3.2MHz (Max Freq.) at V
CDP6402CE
CDP6402CEX
CDP6402CD
CDP6402CDX CDP6402DX
5V/200K
BAUD
CDP6402E
CDP6402D
10V/400K
BAUD
RBR8
RBR7
RBR6
RBR5
RBR4
RBR3
RBR2
RBR1
GND
RRD
RRC
DRR
o
SFD
-
V
RRI
NC
OE
DR
PE
FE
C to +125
o
DD
C to +85
(40 LEAD PDIP, SBDIP)
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
DD
E40.6
D40.6
PKG.
NO.
= 5V
TOP VIEW
o
o
o
o
C
C
C
C
5-74
Description
The CDP6402 and CDP6402C are silicon gate CMOS
Universal
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.
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
CMOS Universal Asynchronous
Asynchronous
TRC
EPE
CLS1
CLS2
SBS
PI
CRL
TBR8
TBR7
TBR6
TBR5
TBR4
TBR3
TBR2
TBR1
TRO
TRE
TBRL
TBRE
MR
Receiver/Transmitter (UART)
CDP6402C
CDP6402,
Receiver/Transmitter
File Number
(UART)
1328.2

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CDP6402C Summary of contents

Page 1

... C (when transmitting 5-bit code +85 C 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. 10V/400K PKG. The CDP6402 and CDP6402C are functionally identical. ...

Page 2

... CONTROL CLS1 CLS2 CRL MR RRC RECEIVER TIMING AND DRR CONTROL STOP LOGIC SFD DR OE TBRE FE CDP6402, CDP6402C TBR8 (MSB) TRANSMITTER BUFFER REGISTER PARITY LOGIC TRANSMITTER REGISTER MULTIPLEXER CONTROL REGISTER MULTIPLEXER RECEIVER REGISTER PARITY LOGIC RECEIVER BUFFER REGISTER THREE STATE BUFFERS PE RBR8 (MSB) FIGURE 1 ...

Page 3

... Absolute Maximum Ratings DC Supply-Voltage Range CDP6402 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5 to +11V CDP6402C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5 to +7V Input Voltage Range, All Inputs . . . . . . . . . . . . . . -0 Input Current, Any One Input Device Dissipation Per Output Transistor For T = Full Package-Temperature Range A (All Package Types 100mW Operating-Temperature Range ( Package Type D (SBDIP -55 Package Type E (PDIP -40 CAUTION: Stresses above those listed in “ ...

Page 4

... OUT NOTES Typical values are for and nominal Operating current is measured at 200kHz or V CDP1802A system operating at maximum speed of 3.2MHz). CDP6402, CDP6402C - + 10%, Except as noted (Continued CDP6402 V V (NOTE (V) ...

Page 5

... TO 2 CYCLES FIGURE 3. TRANSMITTER TIMING WAVEFORMS CDP6402, CDP6402C Receiver Operation Data is received in serial form at the RRl input. When no data is being received, RRI input must remain high. The data is clocked through the RRC. The clock rate is 16 times the data rate. Receiver timing is shown in Figure 4. ...

Page 6

... NOTE Don’t Care CDP6402, CDP6402C TABLE 1. CONTROL WORD FUNCTION EPE SBS DATA BITS ...

Page 7

... A low to high transition on TBRL requests data transfer to the transmitter register. If the transmitter register is busy, transfer is automatically delayed so that the two characters are transmitted end to end. 24 TRE A high level on TRANSMITTER REGISTER EMPTY indicates completed transmission of a character including stop bits. CDP6402, CDP6402C TABLE 2. FUNCTION PIN DEFINITION DESCRIPTION 5-80 ...

Page 8

... See Pin 37 - CLS2 39 EPE† When PI is low, a high level on EVEN PARITY ENABLE generates and checks even parity. A low level selects odd parity. 40 TRC The TRANSMITTER REGISTER CLOCK is 16X the transmit data rate. † See Table 1 (Control Word Function) CDP6402, CDP6402C DESCRIPTION 5-81 ...

Page 9

... Maximum limits of minimum characteristics are the values above which all devices function. CONTROL INPUT WORD TIMING CONTROL WORD INPUT CRL STATUS OUTPUT TIMING STATUS OUTPUTS t SFDH SFD RECEIVER REGISTER DISCONNECT TIMING R BUS 0 R BUS 7 t RRDH RRD CDP6402, CDP6402C - + 5 20ns CDP6402 ...

Page 10

... Clock to TRE NOTES: 1. All measurements are made at the 50% point of the transition except three-state measurements Typical values for and nominal Maximum limits of minimum characteristics are the values above which all devices function. CDP6402, CDP6402C - + 5 ...

Page 11

... The start bit may be completely asynchronous with the clock pending DA has not been cleared by a read of the receiver holding register by the time a new word is loaded into the receiver holding register, the OE signal will come true.. CDP6402, CDP6402C TRANSMITTER BUFFER REGISTER LOADED ...

Page 12

... Clock to Framing Error NOTES: 1. All measurements are made at the 50% point of the transition except three-state measurements Typical values for and nominal Maximum limits of minimum characteristics are the values above which all devices function. CDP6402, CDP6402C - + 5 ...

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