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RL78/G1A CHAPTER 4 PORT FUNCTIONS
R01UH0305EJ0200 Rev.2.00 112
Jul 04, 2013
4.3.8 Peripheral I/O redirection register (PIOR)
This register is 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 PIOR register to assign a port to the function to redirect and enable the function.
In addition, can be changed the settings for redirection until its function enable operation. The PIOR register can be set
by an 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Figure 4-8. Format of Peripheral I/O Redirection Register (PIOR)
Address: F0077H After reset: 00H R/W
Symbol 7 6 5 4 3 2 1 0
PIOR 0 0 0 0 0 0 PIOR1 PIOR0
64-pin 48-pin 32-pin
25
-pin
Setting value of
PIOR1, PIOR0
Setting value of
PIOR1, PIOR0
Setting value of
PIOR1, PIOR0
Setting value of
PIOR1, PIOR0
Alternate
function
0, 0 0, 1 1, 0 1, 1 0, 0 0, 1 1, 0 1, 1 0, 0 0, 1 1, 0 1, 1 0, 0 0, 1 1, 0 1, 1
KR0 P70 P00 P10 P70 P02 P10 P70 P120 P10 − P02
KR1 P71 P01 P11 P71 P03 P11 − P02 P11 − P03
KR2 P72 P02 P12 P72 P22 P12 − P03 P12 − P22
KR3 P73 P03 P13 P73 P23 P13 − P22 P13 − P23
KR4 P74 P04 P14 P74 P24 P14 − P23 P14 − −
KR5 P75 P22 P15 P75 P25 P15 − P24 P15 − −
KR6 P76 P23 P151 − − − − − − − −
KR7 P77 P24 P152 − − − − − − − −
KR8 P05 P25 P153 − − − − − − − −
KR9 P06
Setting
prohibited
P26 P154 −
Setting
prohibited
− − −
Setting
prohibited
− − −
Setting
prohibited
−
Setting
prohibited
Remark −: These functions are not available for use.
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