R8C33A datasheet(86/617 Pages) RENESAS

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R8C/33A Group

7. I/O Ports

REJ09B0455-0010 Rev.0.10

Feb 29, 2008

Page 58 of 586

Under development Preliminary specification

Specifications in this manual are tentative and subject to change.

Figure 7.2

Configuration of I/O Ports (2)

Pin select register

P1_0 to P1_2

Drive capacity selection

Input to individual peripheral function

Analog input of A/D converter

Analog input of comparator A

Pin select register

P1_3

Drive capacity selection

Input to individual peripheral function

Analog input of A/D converter

Note:

symbolizes a parasitic diode.

Ensure the input voltage to each port does not exceed VCC.

(Note 1)

Port latch

Data bus

Pull-up selection

Output from individual

peripheral function

Drive capacity selection

Direction

Input level

switch function

Pin select

Port latch

Data bus

Pull-up selection

Output from individual

peripheral function

Drive capacity selection

Direction

Input level

switch function

Pin select

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