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Commodore - ASYNCHRONOUS COMMUNICATION INTERFACE ADAPTER

Numéro de référence 6551
Description ASYNCHRONOUS COMMUNICATION INTERFACE ADAPTER
Fabricant Commodore 
Logo Commodore 





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6551 fiche technique
, . .commodore
~ aamiconduct:ar group
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MPS
6551
ASSYNCH RONOUS
COMMUNICATION
INTERFACE
ADAPTER
[ 6551 ASYNCHRONOUS COMMUNICATION INTERFACE ADAPTER
CONCEPT:
The 6551 is an Asynchronous Communication Adapter (ACIA) intended to provide for interfacing the 6500/6800
microprocessor families to serial communication data sets and modems. A unique feature is the inclusion of an
on-chip programmable baud rate generator, with a crystal being the only external com pone t required.
FEATURES:
• On-chip baud rate generator: 15 programmable baud
rates derived from a standard 1.8432 M Hz external
crystal (50 to 19,200 baud).
• Programmable interrupt and status register to simplify
software design.
• Single +5 volt power supply.
• Serial echo mode.
• False start bit detection.
• 8-bit bi-directional data bus for direct communicati~
)
-standard baud rates (up
engths; number of stop bits; and
nd detection.
control signals provided.
:¥ep';' none, mark, space).
r half-duplex operation.
9 bit transmission.
ORDER NUMBER
MXS 6551
PACKAGE DESIGNATOR
C = CERAMIC
P = PLASTIC
6551 PIN CONFIGURATION
GND 1
2
3
4
5
6
7
RTS 8
CTS 9
TxD 10
l5'i'R 11
RxD 12
RSO 13
RS1 14
28 R/W
27 ~2
26 iRa
25 DB7
24 DB6
23 DB5
22 DB4
21 DB3
20 DB2
19 DB1
18 DBO
17 DSR
16 DCD
15 Vce
2-129

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