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Motorola Electronic Components Datasheet

MC14469 Datasheet

Addressable Asynchronous Receiver/Transmitter

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MC14469/D
MC14469
Addressable Asynchronous
Receiver/Transmitter
CMOS
The MC14469 receives one or two 11–bit words in a serial data stream. One
of the incoming words contains the address and when the address matches, the
MC14469 then transmits information in two 11–bit word data streams. Each of
the transmitted words contains eight data bits, an even parity bit, and start and
stop bits.
The received word contains seven address bits with the address of the
MC14469 set on seven pins. Therefore, 27 or 128 units can be interconnected
in simplex or full–duplex data transmission. In addition to the address received,
seven command bits may be received for general–purpose data or control use.
The MC14469 finds application in transmitting data from remote analog–to–
digital converters, remote MPUs, or remote digital transducers to the master
computer or MPU.
Supply Voltage Range: 4.5 V to 18 V
Low Quiescent Current: 75 µA Maximum @ 5 V, 25°C
Guaranteed Data Rates to 4800 Baud @ 5 V, to 9600 Baud @ 12 V
Receive — Serial to Parallel
Transmit — Parallel to Parallel
Transmit and Receive Simultaneously in Full Duplex
Crystal or Resonator Operation for On–Chip Oscillator
See Application Note AN806A
Chip Complexity: 1200 FETs or 300 Equivalent Gates
PIN ASSIGNMENTS
40
1
P SUFFIX
PLASTIC DIP
CASE 711
FN SUFFIX
PLCC PACKAGE
44
1
CASE 777
ORDERING INFORMATION
MC14469P Plastic DIP
MC14469FN PLCC Package
P SUFFIX
OSC1
OSC2
RESET
A0
A1
A2
A3
A4
A5
A6
ID0
ID1
ID2
ID3
ID4
ID5
ID6
ID7
RI
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 VDD
39 C0
38 C1
37 C2
36 C3
35 C4
34 C5
33 C6
32 CS
31 VAP
30 SEND
29 S0
28 S1
27 S2
26 S3
25 S4
24 S5
23 S6
22 S7
21 TRO
FN SUFFIX
6 5 4 3 2 1 44 43 42 41 40
A2 7
39 C4
A3 8
38 C5
A4 9
37 C6
A5 10
36 CS
A6 11
35 VAP
NC 12
34 NC
ID0 13
33 SEND
ID1 14
32 S0
ID2 15
31 S1
ID3 16
30 S2
ID4 17
29 S3
18 19 20 21 22 23 24 25 26 27 28
NC = NO CONNECTION
©MOMoTtoOroRla,OInLc.A1995
MC14469
1


Motorola Electronic Components Datasheet

MC14469 Datasheet

Addressable Asynchronous Receiver/Transmitter

No Preview Available !

RECEIVE
DATA
(RI)
RECEIVE
DATA
STROBE
CLOCK
SEND
SEND ENABLE
DATA RATE CLOCK
BLOCK DIAGRAM
RECEIVE
(A0 – A6)
ADDRESS
7
ADDRESS CONTROL
AND DATA COMPARATOR
(C0 – C6)
COMMAND DATA
7
COMMAND
LATCHES
STROBE
COMPARE
CLOCK
7
RVAL
CLOCK
STATIC SHIFT REGISTER
TIMING AND CONTROL
AND PARITY CHECK
COMMAND
STROBE (CS)
RECEIVE DATA
STROBE ENABLE
SEND ENABLE
LATCH (SEL)
VALID ADDRESS
PULSE (VAP)
(ID0 – ID7)
INPUT DATA
8
TRANSMIT
(S0 – S7)
STATUS
8
STATUS
LATCHES
8
STATIC SHIFT REGISTER
LOAD
2 SELECT
CONTROL AND PARITY
GENERATOR
RVAL
STATUS STROBE
OUTPUT
LOGIC
TRANSMIT
DATA (TRO)
4
STATUS
STROBE
OSC1
OSC2
CLOCK
OSCILLATOR
CLOCKS
CLOCK
GENERATOR
DATA RATE CLOCK
RECEIVE DATA STROBE
RECEIVE DATA STROBE ENABLE
MC14469
2
MOTOROLA


Part Number MC14469
Description Addressable Asynchronous Receiver/Transmitter
Maker Motorola
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MC14469 Datasheet PDF






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