HMCS404CL
(HD614045)----
The HMCS404CL
is
a
CMOS
4-bit single-chip microcomputer
which
is
a member
of
the HMCS400 series.
The
HMCS404CL
is
a
3V
operation version
of
the HMCS-
404C.
The HMCS404CL has efficient and powerful architecture and
its software
is
very similar to the HMCS40 series.
This microcomputer provides variety
of
on-chip resources
such as
ROM, RAM, 110,
two
timer/counters and a serial inter-
face
to perform
in
wide
users' applications.
The
HMCS404CL also has the characteristics
of
high speed
and
low
power dissipation and which 110 pins are able
to
drive
fluorescent display tube directly.
•
HARDWARE
FEATURES
•
4-bit
Architecture
•
4,096
Words
x
10-bit
ROM
•
256
Digits x
4-bit
RAM
•
58
I/O Pins, including
26
high voltage I/O pins (40V Max)
•
Two
Timer/Counters
ll-bit
Prescaler
8-bit
Free Running Timer
8-bit
Auto-Reload Timer/Event Counter
• Clock Synchronous
8-bit
Serial Interface
•
Five Interrupt Sources
External
2
Timer/Counter
2
Serial Interface 1
• Subroutine Stack
Up
to
16 levels including interrupts
•
Wide
Vee Supply Voltage Range - 2.7V
to
6V
• Minimum Instruction Execution Time - 4
IJ.s
•
Two
Low Power Dissipation Modes
Standby - Stops instruction execution while keeping
clock oscillation and interrupt functions in op-
eration.
Stop - Stops instruction execution and clock oscilla-
tion
while retaining RAM data
• On-Chip Oscillator
External Connection
of
Crystal
or
Ceramic Filter (externally
drivable)
• SOFTWARE
FEATURES
• Instruction Set Similar to and More Powerful than HMCS40
Series;
99
Instructions
• High Programming Efficiency
with
10-bit
ROM/Word;
79
in-
structions are
single word instructions
• Direct Branch
to
All
ROM
Area
• Direct
or
Indirect Addressing
to
All RAM Area
• Subroutine Nesting Up
to
16
Levels Including Interrupts
• Binary and
BCD
Arithmetic Operation
• Powerful Logical Arithmetic Operation
• Pattern Generation - Table Look
Up
Capability -
• Bit Manipulation
for
Both RAM and I/O
335
HMCS404CL
(DP-64S)
HMCS404CL
(FP-64)
• VERSATILE PROGRAM DEVELOPMENT SUPPORT TOOLS
• H68SD Series
Macro Assembler
• H68SD5-use Emulator
(With
Real
Time Trace Function)
•
EPROM
On
Package Microcomputer J
l
MaSk options
are
fixed
as
follows: .
· I/O
pin : Open drain
• Oscillator : Crystal Oscillator
or
Ceramic Filter Oscillator
(externally
drivable)
• Divider
Divided-by-8
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