HD404459 Datasheet, PDF (56/122 Pages) Renesas Technology Corp – 4-bit HMCS400-series microcomputers

HD404459 Series
Ports R5 and R6 are multiplexed with pins WU₀–WU₇. The wakeup modes of these pins can be selected by
the wakeup select register (WSR: $018). Even if wakeup input is valid, the R port functions normally
(figure 38).
Wakeup select register (WSR: $018)
Bit
Initial value
Read/Write
Bit name
3
0
W
WSR3
2
0
W
WSR2
1
0
W
WSR1
0
0
W
WSR0
WSR0
0
1
WU₀ to WU₃ control
Invalid
Valid
WSR1
0
1
WU₄ to WU₅ control
Invalid
Valid
WSR2
0
1
WU₆ control
Invalid
Valid
WSR3
0
1
WU₇ control
Invalid
Valid
Figure 38 Wakeup Select Register (WSR)
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