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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 />

WRPIM<br />

RD<br />

WRPORT<br />

WRPM<br />

WRLCDPF<br />

Figure 4-19. Block Diagram of P51, P56<br />

PU5<br />

PU51, PU56<br />

PIM5<br />

PIM51, PIM56<br />

Alternate<br />

function<br />

P5<br />

Output latch<br />

(P51, P56)<br />

PM5<br />

PM51, PM56<br />

Alternate<br />

function<br />

(TO04, TO16)<br />

Alternate<br />

function<br />

(SCK10, SCK01)<br />

LCD controller/driver<br />

LCDPF5<br />

PF51, PF56<br />

Selector<br />

P5: Port register 5<br />

PU5: Pull-up resistor option register 5<br />

PM5: Port mode register 5<br />

PIM5: Port Input mode register 5<br />

LCDPF5: LCD port function registers 5<br />

RD: Read signal<br />

WRxx: Write signal<br />

Schmitt1<br />

Schmitt3<br />

P51/TI04/TO04/<br />

SCK10/SEG50,<br />

P56/TI16/TO16/<br />

SCK01/SEG4<br />

Caution When using the alternate function TO04 or TO16 , set the port latch to 0.<br />

When using the alternate function SCK10 or SCK01, set the port latch to 1.<br />

When using P51 or P56 as a general-purpose port, specify the port settings so that the alternate<br />

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

R01UH0317EJ0004 Rev. 0.04 170<br />

Feb. 22, 2013<br />

Selector<br />

EVDD<br />

P-ch

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