RL78/G15 CHAPTER 4 PORT FUNCTIONS
R01UH0959EJ0110 Rev.1.10 Page 111 of 765
Mar 7, 2023
4.3.6 Peripheral I/O redirection registers 0 to 3 (PIOR0 to PIOR3)
These registers are used to specify whether to enable or disable the peripheral I/O redirect function.
This function is used to switch ports to which alternate functions are assigned.
Use the PIOR0 to PIOR3 registers to assign a port to the function to redirect and enable the function.
In addition, the settings for redirection can be changed only until operation of the function is enabled.
The PIOR0 to PIOR3 registers can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears these registers to 00H.
Figure 4-6. Format of Peripheral I/O Redirection Registers 0 to 3 (PIOR0 to PIOR3)
8-pin products
Symbol 7 6 5 4 3 2 1 0 Address After reset R/W
PIOR0 0 0 0 0 0 PIOR02 0 PIOR00 F0077H 00H R/W
PIOR3 0 0 0 0 0 PIOR32 0 0 F007CH 00H R/W
10-pin products
Symbol 7 6 5 4 3 2 1 0 Address After reset R/W
PIOR0 0 0 0 0 PIOR03 PIOR02 0 PIOR00 F0077H 00H R/W
PIOR3 0 0 0 0 0 PIOR32 0 PIOR30 F007CH 00H R/W
16-pin products
Symbol 7 6 5 4 3 2 1 0 Address After reset R/W
PIOR0 0 PIOR06 PIOR05 PIOR04 PIOR03 PIOR02 0 PIOR00 F0077H 00H R/W
PIOR1 0 0 0 PIOR14 0 PIOR12 PIOR11 PIOR10 F0079H 00H R/W
PIOR2 0 PIOR26 0 PIOR24 PIOR23 PIOR22 PIOR21 0 F0075H 00H R/W
PIOR3 0 0 0 PIOR34 0 PIOR32 PIOR31 PIOR30 F007CH 00H R/W
20-pin products
Symbol 7 6 5 4 3 2 1 0 Address After reset R/W
PIOR0 PIOR07 PIOR06 PIOR05 PIOR04 PIOR03 PIOR02 PIOR01 PIOR00 F0077H 00H R/W
PIOR1 0 0 0 PIOR14 PIOR13 PIOR12 PIOR11 PIOR10 F0079H 00H R/W
PIOR2 PIOR27 PIOR26 PIOR25 PIOR24 PIOR23 PIOR22 PIOR21 PIOR20 F0075H 00H R/W
PIOR3 0 0 PIOR35 PIOR34 PIOR33 PIOR32 PIOR31 PIOR30 F007CH 00H R/W
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