PD17012_15 Datasheet, PDF (49/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
5.7 General Register Pointer (RP)
5.7.1 Configuration of general register pointer
Figure 5-7 shows the configuration of the general register pointer.
As shown in this figure, the general register pointer consists of 7 bits: 4 bits of address 7DH (RPH) of the
system register and the higher 3 bits of address 7EH (RPL). However, because the higher 2 bits of address
7DH are always fixed to 0, actually the lower 5 bits of this register (the lower 2 bits of address 7DH and the higher
3 bits of address 7EH) are valid.
Figure 5-7. Configuration of General Register Pointer
Address
Name
Symbol
Bit
Data
7DH
7EH
General register pointer
(RP)
RPH
RPL
b3 b2 b1 b0 b3 b2 b1 b0
0 0M
S
B
LB
SC
BD
Power-on
Clock stop
CE
0
0
0
0
0
0
Data Sheet U10101EJ4V0DS
47