04.03.2013 Views

RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

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Under development<br />

Preliminary document<br />

Specifications in this document are tentative and subject to change.<br />

<strong>RL78</strong>/<strong>D1A</strong> CHAPTER 4 PORT FUNCTIONS<br />

Internal bus<br />

Selector<br />

Caution When using the alternate function TO21, set the port latch to 0.<br />

When using the alternate function SDA11, set the port latch to 1.<br />

When using P31 as a general-purpose port, specify the port settings so that the alternate function<br />

outputs are fixed (Timer to 0 and Serial to 1).<br />

R01UH0317EJ0004 Rev. 0.04 163<br />

Feb. 22, 2013<br />

Selector

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