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HMCS46C(HD44840),----
HMCS46CL(HD44848)
The HMCS46C is the CMOS 4-bit single chip microcomputer
which contains ROM, RAM, I/O and Timer/Counter on single
chip. The HMCS46C is designed to perform efficient controller
function as well as arithmetic function for both binary and BCD
data. The CMOS technology of the HMCS46C provides the
flexibility of microcomputers for battery powered and battery
back·up applications.
•
FEATURES
• 4·bit Architecture
• 4,096 Words of Program ROM and Pattern ROM (10 bits/
Word)
•
256 Digits of Data RAM (4 bits/Digit)
•
32 I/O Lines and 2 External Interrupt Lines
•
Timer/Counter
•
Instruction Cycle Time;
H MCS46C: 5",s
HMCS46CL: 20ps
•
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
~ 2 External Interrupt Lines
L
Timer/Counter
Multiple Interrupt Capability
•
Bit Manipulation Instructions for Both RAM and I/O
•
Option of I/O Configuration Selectable on Each Pin; With
Puil up MOS or CMOS or Open Drain
•
Built-in Oscillator
•
Built-in Power-on Reset Circuit (HMCS46C only)
•
Low Operating Power Dissipation; 3.3mW typo
•
Stand-by Mode (Half Mode); 66",W max.
•
CMOS Technology
•
Single Power Supply;
HMCS46C: 5V
±
10%
HMCS46CL: 2.5V to 5.5V
82
HMCS46C, HMCS46CL
(DP-42)
HMCS46C, HMCS46CL
(DP-42S)
• PIN ARRANGEMENT
o
HMCS46C
HMCS46CL
D2
1
DI
Do
R33
Rn
7
RlI
R30
. Rl3
4 Rl2
3 R21
R
lO
1
INTI
INTo
Rll
Ru
7
R11
R to
R03
4 R02
3
Rot
~ _ _ _ _ _ _ --Jr-
Roo
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