Maxim Integrated High-Speed Microcontroller - Manual (Page 26)

High-Speed Microcontroller User’s Guide
Rev: 062210 26 of 176
4.2.3 Data Pointer Low 0 (DPL)
7 6 5 4 3 2 1 0
SFR 82h DPL.7 DPL.6 DPL.5 DPL.4 DPL.3 DPL.2 DPL.1 DPL.0
RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0
R = Unrestricted Read, W = Unrestricted Write, -n = Value after Reset
DPL.7–DPL.0
Bits 7–0 Data Pointer Low 0. This register is the low byte of the standard 80C32 16-bit data
pointer. DPL and DPH are used to point to non-scratchpad data RAM.
4.2.4 Data Pointer High 0 (DPH)
7 6 5 4 3 2 1 0
SFR 83h DPH.7 DPH.6 DPH.5 DPH.4 DPH.3 DPH.2 DPH.1 DPH.0
RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0
R = Unrestricted Read, W = Unrestricted Write, -n = Value after Reset
DPH.7–DPH.0
Bits 7–0 Data Pointer High 0. This register is the high byte of the standard 80C32 16-bit data
pointer.
DPL and DPH are used to point to non-scratchpad data RAM.
4.2.5 Data Pointer Low 1 (DPL1)
7 6 5 4 3 2 1 0
SFR 84h DPL1.7 DPL1.6 DPL1.5 DPL1.4 DPL1.3 DPL1.2 DPL1.1 DL1H.0
RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0
R = Unrestricted Read, W = Unrestricted Write, -n = Value after Reset
DPL1.7—DPL1.0
Bits 7–0 Data Pointer Low 1. This register is the low byte of the auxiliary 16-bit data pointer.
When the SEL bit (
DPS .0) is set, DPL1 and DPH1 are used in place of DPL and DPH
during DPTR operations.
4.2.6 Data Pointer High 1 (DPH1)
7 6 5 4 3 2 1 0
SFR 85h DPH1.7 DPH1.6 DPH1.5 DPH1.4 DPH1.3 DPH1.2 DPH1.1 DPH1.0
RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0
R = Unrestricted Read, W = Unrestricted Write, -n = Value after Reset
DPH1.7—DPH1.0
Bits 7–0 Data Pointer High 1. This register is the high byte of the auxiliary 16-bit data pointer.
When the SEL bit (
DPS .0) is set, DPL1 and DPH1 are used in place of DPL and DPH
during DPTR operations.