PD17012_15 Datasheet, PDF (43/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
5.3 Address Register (AR)
5.3.1 Configuration of address register
Figure 5-3 shows the configuration of the address register.
As shown in this figure, the address register consists of 16 bits, or 74H to 77H (AR3 to AR0) of the system
register. However, since the higher 4 bits are always fixed to 0, this register actually operates as a 12-bit register.
Figure 5-3. Configuration of Address Register
Address
Name
Symbol
Bit
Data^Note
74H
75H
76H
77H
Address register (AR)
AR3
AR2
AR1
AR0
b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0 b3 b2 b1 b0
M
L
S
S
B
B
0000
Power-on
Clock stop
CE
0
0
0
0
0
0
0
0
0
0
0
0
Remark Power-on: Power-on reset
Clock stop: Execution of clock stop instruction
CE:
CE reset
Note Bits marked as “0” are fixed to 0.
Data Sheet U10101EJ4V0DS
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