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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 />

WRLCDPF<br />

Figure 4-36. Block Diagram of P92, P94<br />

PU9<br />

PU92, PU94<br />

Alternate<br />

function<br />

P9<br />

Output latch<br />

(P92, P94)<br />

PM9<br />

PM92, PM94<br />

Alternate<br />

function<br />

(SM33, SM41)<br />

Alternate<br />

function<br />

(TO25, TO01)<br />

Alternate<br />

function<br />

(SGOA, RTC1HZ)<br />

LCD controller/driver<br />

LCDPF9<br />

PF92, PF94<br />

Selector<br />

P9: Port register 9<br />

PU9: Pull-up resistor option register 9<br />

PM9: Port mode register 9<br />

LCDPF9: LCD port function registers 9<br />

RD: Read signal<br />

WRxx: Write signal<br />

P92/SM33/TI25/<br />

TO25/SGOA/<br />

SEG42,<br />

P94/SM41/TI01/<br />

TO01/RTC1HZ/<br />

SEG44<br />

R01UH0317EJ0004 Rev. 0.04 191<br />

Feb. 22, 2013<br />

Selector<br />

SMVDD<br />

Caution When using the alternate function SM33, SM41, TO25, TO01, SGOA, or RTC1HZ, set the port latch to<br />

0.<br />

When using P92 or P94 as a general-purpose port, specify the port settings so that the alternate<br />

function outputs are fixed 0.<br />

P-ch

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