UPD75112 Datasheet, PDF (30/56 Pages) NEC – 4-Bit Single Chip-Microcomputer

µPD75112(A), 75116(A)
(2) Legend in the description of operations
A
:
B
:
C
:
D
:
E
:
H
:
L
:
X
:
XA :
BC :
DE :
HL :
XA’ :
BC’ :
DE’ :
HL’ :
PC :
SP :
CY :
PSW :
MBE :
RBE :
PORTn :
IME :
IPS :
IE××× :
RBS :
MBS :
PCC :
.
:
(×× ) :
××H :
A register; 4-bit accumulator
B register
C register
D register
E register
H register
L register
X register
Register pair (XA); 8-bit accumulator
Register pair (BC)
Register pair (DE)
Register pair (HL)
Extended register pair (XA’)
Extended register pair (BC’)
Extended register pair (DE’)
Extended register pair (HL’)
Program counter
Stack pointer
Carry flag; bit accumulator
Program status word
Memory bank enable flag
Register bank enable flag
Port n (n = 0 to 9, 12 to 14)
Interrupt mask enable flag
Interrupt priority select register
Interrupt enable flag
Register bank select register
Memory bank select register
Processor clock control register
Address and bit division
Content addressed by ××
Hexadecimal data
30