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UCOM-4 데이터시트 PDF




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부품번호 UCOM-4 기능
기능 4-BIT SINGLE CHIP MICROCOMPUTER FAMILY
제조업체 NEC
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UCOM-4 데이터시트, 핀배열, 회로
NEe Microcomputers, Inc.
NEe
JI. COM-4
4-81T SINGLE CHIP MICROCOMPUTER FAMILY
DEseR IPTION
The J,lCOM-4 4-bit Microcomputer Family is a broad product line of 14 individual
devices designed to fulfill a wide variety of design criteria_ The product line shares a
compatible architecture and instruction set_ The architecture includes all functional
blocks necessary for a single chip controller, including an ALU, Accumulator, Byte-
wide ROM, RAM, and Stack. The instruction set maximizes the efficient utilization
of the fixed ROM space, and includes a variety of Single Bit Manipulation, Table
Look-Up, BCD arithemetic, and Skip instructions.
The J,lCOM-4 Microcomputer Family includes seven different products capable of
directly driving 35V Vacuum Fluorescent Displays. Four products are manufactured
with a CMOS process technology.J,lCOM-4 Microcomputers are ideal for low-{;ost
general purpose controller applications such as industrial controls, instruments,
appliance controls, intelligent VF display drivers, and games.
The J,lCOM-4 Microcomputer Family can be broken down into 3 distinct groups
according to their performance capabilities. These groups are distinguished by their
ROM, RAM, and I/O capabilities, as follows.
IlCOM-4 MICRO
COMPUTER FAMILY
IlCOM-43
IlCOM-44
IlCOM-45
ROM
2000 x 8
1000 x 8
1000x8 @
RAM
96 x 4
64x4
32 x 4
I/O
35W
35
21
<DNotes:
The IlPD557L has 21 I/O lines.
@ The IlPD550 and IlPD550L have 640 x 8 ROMs.
RELATIVE
PERFORMANCE
Highest
Medium
Lowest
FEATURES • Choice of ROM size: 2000 x 8,1000 x 8, or 640 x 8
• Choice of RAM size: 96 x 4, 64 x 4, or 32 x 4
- Six 4-Bit Working Registers Available
- One 4-Bit Flag Register Available
• Powerful Instruction Set
Choice of 80 or 58 Instructions
Table Look-Up Capability with CZP and JPA Instructions
Single Bit Manipulation of RAM or I/O Ports
BCD Arithmetic Capability
• Choice of 3-Level, 2-Level, or l-Level Subroutine Stack
• Extensive I/O Capability
- Choice of 35 or 21 I/O Lines
35 Lines
21 Lines
4-Bit Input Ports
2
1
4-Bit I/O Ports
2
2
4-Bit Output Ports
4
2
3-Bit Output Ports
l-B it Output Port
• Programmable 6-Bit Timer Available
• Choice of Hardware or Testable Interrupt
• Built-In Clock Signal Generation Circuitry
• Built-In Reset Circuitry
• Single Power Supply
• Low Power Consumption
• PMOS or CMOS Technologies
• Choice of 42-pin DIP, 28-pin DIP, or 52-pin Flat Plastic Package
159




UCOM-4 pdf, 반도체, 판매, 대치품
,.,. COM-4
I/O Capability
The tlCOM-4 microcomputer family has either 35 or 21 I/O lines, depending upon the
individual part, for communication with and control of external circuitry_ They are
organized as follows:
FUNCTIONAL
DESCRIPTION
(CONT.)
Port A
Port B
Port C
Port D
Port E
Port F
Port G
Port H
Port I
PAO-3
PBO-3
PCO-3
PDO-3
PEO-3
PFO-3
PGO-3
PHO-3
PIO-2
4-Bit Input
4-Bit Input
4-Bit Input/Output (VF Drive Possible)
4-Bit Input/Output (VF Drive Possible)
4-Bit Output (VF Drive Possible)
4-Bit Output (VF Drive Possible)
4-Bit Output (VF Drive Possible)
4-Bit Output (VF Drive Possible)
3-Bit Output (VF Drive Possible)
Development Tools
The NEC Microcomputers' NOS Development System is available for developing
software service code, editing, and assembling source code into object code_ In addi-
tion, the ASM-43 Cross Assembler is available for systems which support the ISIS-II
(TM Intel Corp.) Operating System. The CASM-43 Cross Assembler is available for
systems which support the CP/M Digital Research Corp.) Operating System.
The EVAKIT-43P Evaluation Board is available for production device emulation and
prototype system debugging. The SE-43P Emulation Board is available for demon-
strating the final system design. The tlPD556B ROM-less Evaluation Chip is available
for small pilot production.
162

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UCOM-4 전자부품, 판매, 대치품
JI. COM-4
INSTRUCTION SET
(CaNT.)
MNEMONIC
FUNCTION
EXL
ACC - ACC'" IDP)
CLA
Ace +-0
CMA Ace-Ace
CIA Acc-AcC+ 1
CLC
STC
TC
C-O
C-l
Skip if C" 1
INC
DEC
IND
DEO
Ace +-ACC + 1
Skip If overflow
ACC+- ACC- 1
Skip if underflow
DPl-DPL + 1
Skip If DPL = OH
OPL+-DPL-l
Skip if DPL '" FH
RMBdata
(OP)bit +- 0
5MB data
(DP)bit+- 1
REB data
SEB data
RPB data
PEbit -0
PEbit-1
P(OPLIbit - 0
SPB data
PIOPL)bit - 1
JM'P address
JCP address
Pl0-O- 010-0
PS-O - 0S-O
JPA PS-2- ACC
Pl-O -00
CAL address
Stack-P+2
P10-o- 010-0
CZP address
Stack _p + 1
Pl0-6 - 00000
PS·2- D3.Q
P1-o- 00
RT
RTS
P - Stack
P - Stack
Skip unconditionally
DESCRIPTION
I INSTRUCTION CODE
I
D7 D8 lit; D4 D3 DZ D, DO
BYTES
LOGICAL
Perform a LOGICAL
000 110 00
eXCLUSIVE.()R between the
RAM contents addressed bV OP
and Ace: store the result in Ace
1
Clear Ace to zero
Complement Ace
Complement A; Increment A
ACCUMULATOR
11 0 0
10 0 0
000
I I1 0 1 0 0
1 10
0 10
1 0 10 10
0
0
1
1
1
1
CARRY FLAG
Reset Carry F/F to zero
Set Carry FIF to one
Skip if Carry F/F is true
10 0 0 0 11 0 11
10 0 0 1 11 0 11
I1 0 0 0 0 0 11 10
INCREMENT AND DECREMENT
1
1
0
1
1
1
Increment A; Skip If overflow
is generated
Decrement A; Skip if underflow
occurs
Increment DPL;
Skip If OPL ... OH
Decrement DPL:
Skip if DPL ;; FH
0000110 1
00 00 1 1 11
0 0 110 0 1 1
0 00 10 0 11
1
1
1
1
BIT MANIPULATION
R~et a single bit (denoted by
01-00) of RAM at the location
addressed bV OP to zero
0 1 1 0 1 0 Dl DO
Set a single bit (denoted by 0,001 0 1 1 1 1 0 Dl Do
of RAM at the location addressed
by DP to one
Reset a single bit (denoted by
0, Dol of output Port E to zero
0 1 1 0 0 1 01 DO
Set a single bit (denoted by 01 Dol 0 1 1 1 0 1 01 DO
of output Port E to one
Reset a single bit (denoted by
01 Dol of the output port
addressed by OPL to zero
0 1 1 0 0 0 01 Do
Set a single bit (denoted by 01001 0 1 1 1 0 0 01 DO
of the output port addressed by
OPL
1
1
1
1
1
1
JUMP, CALL AND RETURN
Jump to the address specified by
11 bits of immediate data
1 0 1 0 0 010 D9 D8
D7 D6 Os D4 03 02 01 DO
Jump to the address within the
current ROM page specified by
6 bits of immediate data
1 1 DS D4 03 D2 Dl Do
Jump to the address within the
current ROM page'modified by
0 1000 00 1
ACC
Store a return address (P + 21 in
1 0 1 0 1 010 Dg 08
the stack; call the subroutine pro- D7 D6 Os 04 03 D2 01 DO
gram at the location specified by
11 bits of immediate data
Store a return address (P + 11 in
1 0 1 1 03 D2 Dl DO
the stack; call the subroutine pro-
gram at one of sixteen locations in
Page 0 of Field 0, specified by 4
bits of immediate data
Return from Subroutine
Return f~om Subroutine; skip
unconditionally
0 100 1000
0 100100 1
2
1
1
2
1
1
1
SKIP
CYCLES CONDITION
1
1I
1I
1T
1I
1r
l+S C -1
l+S Overflow
1+S Underflow
1 +S OPL -OH
1 + S OPL - FH
1
1
2
2
1
1
2
1
2
2
1
2
1+S
Unconditional
II
165

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관련 데이터시트

부품번호상세설명 및 기능제조사
UCOM-4

4-BIT SINGLE CHIP MICROCOMPUTER FAMILY

NEC
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