Z51F3220FNX Datasheet, PDF (65/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
DPL1 (Data Pointer Register Low 1) : 84H
7
6
5
4
3
2
1
0
DPL1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
DPL1
Data Pointer Low 1
DPH1 (Data Pointer Register High 1) : 85H
7
6
5
4
3
2
1
0
DPH1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
DPH1
Data Pointer High 1
PSW (Program Status Word Register) : D0H
7
6
5
4
3
2
1
0
CY
AC
F0
RS1
RS0
OV
F1
P
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
CY
Carry Flag
AC
Auxiliary Carry Flag
F0
General Purpose User-Definable Flag
RS1
Register Bank Select bit 1
RS0
Register Bank Select bit 0
OV
Overflow Flag
F1
User-Definable Flag
P
Parity Flag. Set/Cleared by hardware each instruction cycle to
indicate an odd/even number of ‘1’ bits in the accumulator
EO (Extended Operation Register) : A2H
7
6
5
4
3
–
–
–
TRAP_EN
–
–
–
–
R/W
–
2
DPSEL2
R/W
1
0
DPSEL1
DPSEL0
R/W
R/W
Initial value : 00H
TRAP_EN
DPSEL[2:0]
Select the Instruction (Keep always ‘0’).
0
Select Software TRAP Instruction
1
Select MOVC @(DPTR++), A
Select Banked Data Pointer Register
DPSEL2 DPSEL1 SPSEL0 Description
0
0
0
DPTR0
0
0
1
DPTR1
Reserved
PS029902-0212
PRELIMINARY
62