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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 />

Figure 4-33. Block Diagram of P80 to P82 and P84 to P86<br />

WRPU<br />

RD<br />

WRPORT<br />

WRPM<br />

WRLCDPF<br />

PU8<br />

PU80 to PU82,<br />

PU84 to PU86<br />

Alternate<br />

function<br />

P8<br />

Output latch<br />

(P80 to P82,<br />

P84 to P86)<br />

PM8<br />

PM80 to PM82,<br />

PM84 to PM86<br />

Alternate<br />

function<br />

(SM11 to SM13,<br />

SM21 to SM23)<br />

Alternate<br />

function<br />

(TO01, TO03, TO05,<br />

TO11, TO13, TO15)<br />

LCD controller/driver<br />

LCDPF8<br />

PF80 to PF82,<br />

PF84 to PF86<br />

Selector<br />

P8: Port register 8<br />

PU8: Pull-up resistor option register 8<br />

PM8: Port mode register 8<br />

LCDPF8: LCD port function registers 8<br />

RD: Read signal<br />

WRxx: Write signal<br />

P80/SM11/TI01/<br />

TO01/SEG32,<br />

P81/SM12/TI03/<br />

TO03/SEG33,<br />

P82/SM13/TI05/<br />

TO05/SEG34,<br />

P84/SM21/TI11/<br />

TO11/SEG36,<br />

P85/SM22/TI13/<br />

TO13/SEG37,<br />

P86/SM23/TI15/<br />

TO15/SEG38<br />

R01UH0317EJ0004 Rev. 0.04 187<br />

Feb. 22, 2013<br />

Selector<br />

SMVDD<br />

Caution When using the alternate function SM11 to SM13, SM21 to SM23, TO01, TO03, TO05, TO11, TO13, or<br />

TO15, set the port latch to 0.<br />

When using P80 to P82 or P84 to P86 as a general-purpose port, specify the port settings so that the<br />

alternate function outputs are fixed 0.<br />

P-ch

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