HMCS404C(HD614042),------
The HMCS404C
is
a
CMOS
4-bit single-chip microcomputer
which
is
a member
of
the HMCS400 series.
The HMCS404C 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,
I/O, two timer/counters and a serial inter-
face
to perform in wide users' applications.
The HMCS404C also has the characteristics
of
high speed
and low power dissipation and which I/O pins are able to
drive fluorescent display tube directly.
• HARDWARE FEATURES
•
4-bit Architecture
• 4,096 Words x
10-bi-t
ROM
• 256 Digits x 4-bit RAM
• 58 I/O
Pins,
Including 26 High Voltage
I/O
Pins
(40V Max)
• Two Timer/Counters
"-bit
Prescaler
8-bit
Free
Running Timer
8-bit
Auto-Reload Timer/Event Counter
• Clock Synchronous 8-bit
Serial
Interface
•
Five
Interrupts
External
2
Timer/Counter 2
Serial Interface 1
• Subroutine Stack
Up
to
16
Levels
Including Interrupt
•
Minimum Instruction Execution Time - 2
IlS
• Two Low Power Dissipation
Modes
Standby - Stops instruction execution while keeping
clock oscillation
and
interrupt functions in
operation
Stop Stops instruction execution
and
clock oscil-
lation
while retaining
RAM
data
• On-Chip Oscillator
External Connection
of
Crystal, Ceramic Filter
or
Resistor
(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
instructions
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
1/0
(DP-64S)
(FP-64)
• VERSATILE PROGRAM DEVELOPMENT
SUPPORT
TOOLS
• H68SD
Series
Macro
Assembler
•
H68SDS-use
Emulator (With
Real
Time Trace Function)
•
EPROM
On
Package
Microcomputer
[
Mask
options
are
fixed
as
follows: J
• 1/0 pin :
Open
Drain
• Oscillator: Crystal Oscillator or Ceramic Filter Oscillator
(externally drivable)
•
Divider : Divide-by-8
221
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