Port Pi Direction Register (Pdi) (I = 0 To 10) - Renesas M16C/64A Series User Manual

M16C/64A Group
13.3.6

Port Pi Direction Register (PDi) (i = 0 to 10)

Port Pi Direction Register (i = 0 to 10)
b7 b6 b5 b4 b3 b2 b1
Write to the PD9 register in the next instruction after setting the PRC2 bit in the PRCR register to 1
(write enabled).
Select whether I/O ports are to be used for input or output by the PDi register. Each bit in the PDi
register has a corresponding port.
In memory expansion mode or microprocessor mode, the PDi register for the pins functioning as bus
control pins (A0 to A19, D0 to D15, CS0 to CS3 , RD , WRL / WR , WRH / BHE , ALE, RDY , HOLD , HLDA ,
and BCLK) cannot be modified (writing a value has no effect).
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
b0
Symbol
PD0 to PD3
PD4 to PD7
PD8 to PD10
Bit Symbol Bit Name
PDi_0 Port Pi_0 direction bit
PDi_1 Port Pi_1 direction bit
PDi_2 Port Pi_2 direction bit
PDi_3 Port Pi_3 direction bit
PDi_4 Port Pi_4 direction bit
PDi_5 Port Pi_5 direction bit
PDi_6 Port Pi_6 direction bit
PDi_7 Port Pi_7 direction bit
Address
03E2h, 03E3h, 03E6h, 03E7h
03EAh, 03EBh, 03EEh, 03EFh
03F2h, 03F3h, 03F6h
Function
0 : Input mode
(functions as an input port)
1 : Output mode
(functions as an output port)
13. Programmable I/O Ports
Reset Value
00h
00h
00h
RW
RW
RW
RW
RW
RW
RW
RW
RW
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