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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 />

WRPU<br />

RD<br />

WRPORT<br />

WRPM<br />

Figure 4-49. Block Diagram of P140<br />

PU14<br />

PU140<br />

Alternate<br />

function<br />

P14<br />

Output latch<br />

(P140)<br />

PM14<br />

PM140<br />

Alternate<br />

function<br />

(TO11)<br />

Selector<br />

P14: Port register 14<br />

PU14: Pull-up resistor option register 14<br />

PM14: Port mode register 14<br />

RD: Read signal<br />

WRxx: Write signal<br />

P140/TI11/TO11<br />

Caution When using the alternate function TO11, set the port latch to 0.<br />

When using P140 as a general-purpose port, specify the port settings so that the alternate function<br />

output is fixed to 0.<br />

R01UH0317EJ0004 Rev. 0.04 206<br />

Feb. 22, 2013<br />

EVDD<br />

P-ch

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