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MCS48
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Family of single chip microcomputers
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Contents
Table of Contents
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Table of Contents
Advertisement
iny
ID8243
MCS-48™ INPUT/OUTPUT
EXPANDER
-40°C
to
+85°C
Operation
Low
Cost
Simple
Interface
to
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Micro-
computers
Four
4-Bit
I/O Ports
AND
and
OR
Directly to Ports
24-Pin
DIP
Single
5V Supply
High Output
Drive
Direct
Extension
of
Resident
8048
I/O
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The
Intel®
8243
is
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T
"
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chip
microcomputers.
Fabricated
in
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volts
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the
8243
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single
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The
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consists
of
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I/O ports
and one
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serves as
an
interface to
the
MCS-48
microcomputers.
The
4-bit
interface requires that
only 4
I/O
lines of
the
8048 be used
for
I/O
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and
also allows
multiple 8243's
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added
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the
same
bus.
The
I/O ports
of
the
8243
serve as
a direct
extension
of
the resident I/O
facilities
of
the
MCS-48
microcomputers and
are
accessed by
their
own MOV,
ANL, and
ORL
instructions.
PIN
CONFIGURATION
BLOCK DIAGRAM
P50
C
1
v
"
24
3v
cc
P40C
2
23
3P51
P41C
3
22
3P52
W2C
4
21
3P53
P43C
5
20
DP60
CSC
PROGC
6
B243
19
7
18
DP61
DP62
P23C
8
17
DP63
P22C
9
16
HP73
P21C
10
15
DP72
P20C
11
14
3P71
gndC
12
13
DP70
o
•o>
\>s
rP
P
4
> PORT
4
CJ
7>
:>
TTU<
X>
4
>
PORT
5
a
02
>
4
>
PORT
6
P
^V>
a
INTEL
CORPORATION ASSUMES
NO
RESPONSIBILITY
FOR THE
USE OF
ANY
CIRCUITRY
OTHER THAN
CIRCUITRY
EMBODIED
IN
AN
INTEL
PRODUCT.
NO
OTHER
CIRCUIT
PATENT
LICENSES ARE
IMPLIED.
©
INTEL
CORPORATION, 1979
6-48
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Chapters
Single Component System
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Examples Application
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Ordering Information
418
Table of Contents
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