Hmcs404C(Hd614042) - Hitachi AP1 Data Book

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
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