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Hitachi AP1 - Page 40

Hitachi AP1
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HMCS44C(HD44801
)
HMCS44CL(HD44808)
The HMCS44C
is
the CMOS 4-bit single chip microcomputer
which contains ROM, RAM,
110
and Timer/Event Counter on
single chip. The HMCS44C
is
designed to perform efficient con-
troller function
as
well
as arithmetic function for both binary and
BCD data. The
CMOS technology
of
the HMCS44C provides the
flexibility
of
microcomputers for battery powered and battery
back-up applications.
FEATURES
4-bit
Architecture
2,048
Words
of
Program
ROM
(10 bits/Word)
128
Words
of
Pattern
ROM
(10 bits/Word)
1
60
Digits
of
Data RAM (4 bits/Digit)
32 I/O Lines and 2 External Interrupt Lines
Timer/Event Counter
Instruction Cycle Time: HMCS44C;
10
ILs
HMCS44CL;
20
ILs
All Instructions except One Instruction; Single
Word
and
Single Cycle
BCD
Arithmetic Instructions
Pattern Generation Instruction
- Table Look Up
Capability -
Powerful Interrupt Function
3 Interrupt Sources
t
2 External Interrupt Lines
Timer/Event
Counter
Multiple
Interrupt Capability
Bit Manipulation Instructions
for
Both RAM and I/O
Option
of
I/O Configuration Selectable on Each Pin; Pull Up
MOS
or
CMOS
or
Open Drain
Built-in Oscillator
Built-in Power-on Reset Circuit (HMCS44C only)
Low Operating Power Dissipation;
2mW
typo
Stand-by Mode (Halt Mode);
50
IL
W max.
CMOS Technology
Single Power Supply: HMCS44C;
5V±
1
0%
HMCS44CL; 2.5V
to
5.5V
38
HMCS44C,HMCS44CL
(DP·42)
HMCS44C,HMCS44CL
(DP-42S)
PIN ARRANGEMENT
o
HMCS44C,
HMCS44CL
(Top View)