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D17133CS Datasheet(PDF) 269 Page - NEC

Part # D17133CS
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  289 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

D17133CS Datasheet(HTML) 269 Page - NEC

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CHAPTER 19
ASSEMBLER RESERVED WORDS
254
19.2 RESERVED SYMBOLS
The reserved symbols defined in the
µPD17120 subseries device file (AS1712×, AS1713×) are listed below.
19.2.1 List of Reserved Symbols (
µPD17120, 17121)
System register (SYSREG)
Symbol Name
Attribute
Value
Read/Write
Description
AR3
MEM
0.74H
R
Bits 15 to 12 of the address register
AR2
MEM
0.75H
R/W
Bits 11 to 8 of the address register
AR1
MEM
0.76H
R/W
Bits 7 to 4 of the address register
AR0
MEM
0.77H
R/W
Bits 3 to 0 of the address register
WR
MEM
0.78H
R/W
Window register
BANK
MEM
0.79H
R/W
Bank register
IXH
MEM
0.7AH
R/W
Index register high
MPH
MEM
0.7AH
R/W
Data memory row address pointer high
MPE
FLG
0.7AH.3
R/W
Memory pointer enable flag
IXM
MEM
0.7BH
R/W
Index register middle
MPL
MEM
0.7BH
R/W
Data memory row address pointer low
IXL
MEM
0.7CH
R/W
Index register low
RPH
MEM
0.7DH
R/W
General register pointer high
RPL
MEM
0.7EH
R/W
General register pointer low
PSW
MEM
0.7FH
R/W
Program status word
BCD
FLG
0.7EH.0
R/W
BCD flag
CMP
FLG
0.7FH.3
R/W
Compare flag
CY
FLG
0.7FH.2
R/W
Carry flag
Z
FLG
0.7FH.1
R/W
Zero flag
IXE
FLG
0.7FH.0
R/W
Index enable flag
Data buffer (DBF)
Symbol Name
Attribute
Value
Read/Write
Description
DBF3
MEM
0.0CH
R/W
DBF bits 15 to 12
DBF2
MEM
0.0DH
R/W
DBF bits 11 to 8
DBF1
MEM
0.0EH
R/W
DBF bits 7 to 4
DBF0
MEM
0.0FH
R/W
DBF bits 3 to 0



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