UPD17145 Datasheet, PDF (74/102 Pages) NEC – SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS

µPD17145(A1), 17147(A1), 17149(A1)
21.2 Reserved Symbols
The following tables show the reserved symbols defined by the device file (AS17149) of the µPD17149(A1):
System register (SYSREG)
Symbol Name
AR3
AR2
AR1
AR0
WR
BANK
IXH
MPH
MPE
IXM
MPL
IXL
RPH
RPL
PSW
BCD
CMP
CY
Z
IXE
Attribute
MEM
MEM
MEM
MEM
MEM
MEM
MEM
MEM
FLG
MEM
MEM
MEM
MEM
MEM
MEM
FLG
FLG
FLG
FLG
FLG
Value
0.74H
0.75H
0.76H
0.77H
0.78H
0.79H
0.7AH
0.7AH
0.7AH.3
0.7BH
0.7BH
0.7CH
0.7DH
0.7EH
0.7FH
0.7EH.0
0.7FH.3
0.7FH.2
0.7FH.1
0.7FH.0
Read/Write
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Bits b15-b12 of address register
Bits b11-b8 of address register
Bits b7-b4 of address register
Bits b3-b0 of address register
Window register
Bank register
Index register, high
Data memory row address pointer, high
Memory pointer enable flag
Index register, middle
Data memory row address pointer, low
Index register, low
General register pointer, high
General register pointer, low
Program status word
BCD flag
Compare flag
Carry flag
Zero flag
Index enable flag
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