Intel MCS48 User Manual page 180

intel
NEW
HIGH
PERFORMANCE
8049/8039/8039-6
SINGLE
COMPONENT
8-BIT
MICROCOMPUTER
*8049
Mask Programmable
ROM
*8039
External
ROM
or
EPROM
*New
11
MHz
Operation
8-Bit
CPU,
ROM, RAM,
I/O in
Single
Package
Single
5V ±
10%
Supply
1.36
/isec
Cycle;
All
Instructions
1
or 2
Cycles
Over
90
Instructions:
70%
Single
Byte
Pin
Compatible
with 8048/8748
2K
x 8
ROM
128x8
RAM
27
I/O
Lines
Interval
Timer/Event Counter
Easily
Expandable
Memory
and
I/O
Compatible
with
MCS
Memory
and
I/O
Single Level
Interrupt
The
Intel®
8049/8039/8039-6
is
a
totally self-sufficient 8-bit parallel
computer
fabricated
on
a single silicon
chip using
Intel's
N-channel
silicon gate
MOS
process.
The 8049
contains a
2Kx8
program memory,
a
128x8
RAM
data
memory,
27
I/O lines,
and
an
8-bit
timer/counter
in
addition
to
on
board
oscillator
and
clock
circuits.
For
systems
that require extra capability, the
8049 can be
expanded
using standard memories and
MCS-80™/MCS-85™
peripherals.
The 8039
is
the equivalent
to
an 8049 without program
memory. The
8039-6
is
a lower speed (6MHz)
version of
the 8039.
To reduce development problems
to
a
minimum
and provide
maximum
flexibility,
two interchangeable pin-compatible
versions
of this single
component microcomputer
exist:
the
8049
with
factory-programmed
mask
ROM
program
memory
for
low-cost high
volume
production,
and
the
8039 without program
memory
for
use with external
program
memories
in
prototype and preproduction systems.
This microprocessor
is
designed
to
be an
efficient
controller as well
as an arithmetic processor.
The
8049 has exten-
sive bit
handling
capability as
well
as
facilities for
both
binary
and
BCD
arithmetic. Efficient
use
of
program
memory
results
from an
instruction set
consisting mostly
of
single byte instructions
and no
instructions over
two bytes
in
length.
PIN
CONFIGURATION
LOGIC
SYMBOL
BLOCK DIAGRAM
TOC
XTAL iC
,XTAL
2L
RESET
C
ssC
intC
EAC
rdC
psenC
wrC
aleC
°B
C
DB,C
DB
2
rj
DB
3
C
DB
4
C
DBjC
DB
6
C
DB
7
C
8049
8039
C 20
39 H
T1
38 HP27
37
DP26
36
HP26
35
HP24
34
HP17
33 I]P16
32
UP15
31
UP14
30
3P13
29
HP12
28
DP"
27
Dpi"
26
DV
DD
25
3
PROG
24 I]P23
23 D
p 22
22 I|P21
21
Jno
0>po
RT
PROGRAM
-STORE
ENABLE
ADDRESS
-LATCH
ENABLE
PORT
-EXPANDER
STROBE
2048
WORDS
PROGRAM
MEMORY
7^
\7
8BIT
TIMER/
EVENT COUNTER
128
WORDS
DATA
MEMORY
7\
<Z
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.
e
INTEL
CORPORATION, 1979
6-28