Hmcs404Ac (Hd614048) - Hitachi AP1 Data Book

HMCS404AC (HD614048)----
The HMCS404AC is a CMOS 4-bit single-chip microcomputer
which is a member of the HMCS400 series.
The HMCS404AC is a high speed version of the HMCS404C.
The HMCS404AC 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 HMCS404AC 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
11 -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
• High Speed Operation
Minimum Instruction Execution Time - 1.33 /Ls
• 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
HMCS404AC
(DP·64S)
HMCS404AC
(FP-64)
• VERSATILE PROGRAM DEVELOPMENT SUPPORT TOOLS
• H68SD Series Macro Assembler
• H68SD5-use Emulator (With Real Time Trace Function)
• EPROM On Package Microcomputer
[
Mask options are fixed as follows:
297
• I/O pin : Open drain
• Oscillator : Crystal Oscillator or
(externally drivable)
• Divider : Divided-by-8