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UPD75004 Datasheet(PDF) 39 Page - NEC

Part # UPD75004
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  66 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75004 Datasheet(HTML) 39 Page - NEC

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µPD75004, 75006, 75008
39
Ma-
Ad-
Instruc-
Mne-
Operand
Bytes
chine
Operation
dress-
Skip
tions
monics
Cyc-
ing
Conditions
les
Area
RETI
1
3
•
µPD75004
MBE, x, x, x
← (SP+1)
PC11-0
← (SP)(SP+3)(SP+2)
PSW
← (SP+4)(SP+5), SP ← SP+6
•
µPD75006, 75008
MBE, x, x, PC12
← (SP+1)
PC11-0
← (SP)(SP+3)(SP+2)
PSW
← (SP+4)(SP+5), SP ← SP+6
PUSH
rp
1
1
(SP-1)(SP-2)
← rp, SP ← SP-2
BS
2
2
(SP-1)
← MBS, (SP-2) ← 0, SP ← SP-2
POP
rp
1
1
rp
← (SP+1)(SP), SP ← SP+2
BS
2
2
MBS
← (SP+1), SP ← SP+2
Inter-
EI
2
2
IME
← 1
rupt
IExxx
2
2
IExxx
← 1
Control
DI
2
2
IME
← 0
IExxx
2
2
IExxx
← 0
I/O
IN
*
A, PORTn
2
2
A
← PORTn
(n = 0-8)
XA, PORTn
2
2
XA
← PORTn+1,PORTn
(n = 4, 6)
OUT *
PORTn, A
2
2
PORTn
← A
(n = 2-8)
PORTn, XA
2
2
PORTn+1, PORTn
← XA (n = 4, 6)
CPU
HALT
2
2
Set HALT Mode (PCC.2
← 1)
Control
STOP
2
2
Set STOP Mode (PCC.3
← 1)
NOP
1
1
No Operation
Special
SEL
MBn
2
2
MBS
← n (n = 0, 1, 15)
GETI
taddr
1
3
•
µPD75004
*10
Where TBR instruction,
PC11-0
← (taddr)3-0+(taddr+1)
Where TCALL instruction,
(SP-4)(SP-1)(SP-2)
← PC11-0
(SP-3)
← MBE, 0, 0, 0
PC11-0
← (taddr)3-0+(taddr+1)
SP
← SP-4
Except for TBR and TCALL
Depends on
instructions,
referenced
Instruction execution of
instruction
(taddr)(taddr+1)
•
µPD75006, 75008
Where TBR instruction,
PC12-0
← (taddr)4-0+(taddr+1)
Where TCALL instruction,
(SP-4)(SP-1)(SP-2)
← PC11-0
(SP-3)
← MBE, 0, 0, PC12
PC12-0
← (taddr)4-0+(taddr+1)
SP
← SP-4
Except for TBR and TCALL
Depends on
instructions,
referenced
Instruction execution of
instruction
(taddr)(taddr+1)
*: When executing the IN/OUT instruction, MBE = 0, or MBE = 1, and MBS = 15.
.........................................................
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Subrou-
tine/
Stack
Control
(Cont‘d)



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