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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 />

WRPU<br />

RD<br />

WRPORT<br />

WRPM<br />

Figure 4-35. Block Diagram of P90, P91, P95, and P96<br />

WRLCDPF<br />

PU9<br />

PU90, PU91,<br />

PU95, PU96<br />

Alternate<br />

function<br />

P9<br />

Output latch<br />

(P90, P91,<br />

P95, P96)<br />

PM9<br />

PM90, PM91,<br />

PM95, PM96<br />

Alternate<br />

function<br />

(SM31, SM32,<br />

SM42, SM43)<br />

Alternate<br />

function<br />

(TO21, TO23,<br />

TO03, TO05)<br />

LCD controller/driver<br />

LCDPF9<br />

PF90, PF91,<br />

PF95, PF96<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 />

SMVDD<br />

P90/SM31/TI21/<br />

TO21/SEG40,<br />

P91/SM32/TI23/<br />

TO23/SEG41,<br />

P95/SM42/TI03/<br />

TO03/SEG45,<br />

P96/SM43/TI05/<br />

TO05/SEG46<br />

Caution When using the alternate function SM31, SM32, SM42, SM43, TO21, TO23, TO03, or TO05, set the port<br />

latch to 0.<br />

When using P90, P91, P95, or P96 as a general-purpose port, specify the port settings so that the<br />

alternate function outputs are fixed 0.<br />

R01UH0317EJ0004 Rev. 0.04 190<br />

Feb. 22, 2013<br />

P-ch

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