Renesas R8C/17 Technical Information PDF herunterladen (Seite 10)

R8C/16 Group, R8C/17 Group 1. Overview

Rev.2.00 Jan 30, 2006 Page 8 of 35

REJ03B0101-0200

1.6 Pin Description

Table 1.5 lists the Pin Description and Table 1.6 lists the Pin Name Information by Pin Number.

I: Input O: Output I/O: Input and output

Table 1.5 Pin Description

Function Pin Name I/O Type Description

Power Supply Input VCC

VSS

I Apply 2.7V to 5.5V to the VCC pin. Apply 0V to

the VSS pin

Analog Power Supply

Input

AVCC

AVSS

I Power supply input pins to A/D converter.

Connect AVCC to VCC. Apply 0V to AVSS.

Connect a capacitor between AVCC and AVSS.

Reset Input RESET

I Input “L” on this pin resets the MCU

MODE MODE I Connect this pin to VCC via a resistor

Main Clock Input XIN I These pins are provided for the main clock

generation circuit I/O. Connect a ceramic

resonator or a crystal oscillator between the XIN

and XOUT pins. To use an externally derived

clock, input it to the XIN pin and leave the XOUT

pin open.

Main Clock Output XOUT O

INT

Interrupt INT0, INT1, INT3 I INT interrupt input pins

Key Input Interrupt KI0

to KI3 I Key input interrupt input pins

Timer X CNTR0 I/O Timer X I/O pin

CNTR0

O Timer X output pin

Timer Z TZOUT O Timer Z output pin

Timer C TCIN I Timer C input pin

CMP0_0 to CMP0_2,

CMP1_0 to CMP1_2

O Timer C output pins

Serial Interface CLK0 I/O Transfer clock I/O pin

RXD0 I Serial data input pin

TXD0 O Serial data output pin

C bus Interface

(IIC)

SCL I/O Clock I/O pin

SDA I/O Data I/O pin

Reference Voltage

Input

VREF I Reference voltage input pin to A/D converter

Connect VREF to VCC

A/D Converter AN8 to AN11 I Analog input pins to A/D converter

I/O Port P1_0 to P1_7, P3_3

to P3_5, P3_7, P4_5

I/O These are CMOS I/O ports. Each port contains

an I/O select direction register, allowing each

pin in that port to be directed for input or output

individually.

Any port set to input can select whether to use a

pull-up resistor or not by program.

P1_0 to P1_3 also function as LED drive ports.

Input Port P4_6, P4_7 I Port for input-only

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 39 40

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