R5F72115D160FPV datasheet(33/1228 Pages) RENESAS

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Section 1 Overview

Rev. 2.00 May. 08, 2008 Page 9 of 1200

REJ09B0344-0200

1.4

Pin Functions

Table 1.2 lists functions of each pin.

Table 1.2

Pin Functions

Classification

Symbol

I/O

Name

Function

Vcc

Power supply

Power supply pins. All the Vcc pins

must be connected to the system

power supply. This LSI does not

operate correctly if there is a pin left

open.

Vss

Ground

Ground pins. All the Vss pins must

be connected to the system power

supply (0 V). This LSI does not

operate correctly if there is a pin left

open.

VccQ

Power supply for

I/O circuits

Power supply for I/O pins. All the

VccQ pins must be connected to the

system power supply. This LSI does

not operate correctly if there is a pin

left open.

VssQ

Ground for I/O

circuits

Ground pins for I/O pins. All the

VssQ pins must be connected to the

system power supply (0 V). This LSI

does not operate correctly if there is

a pin left open.

PLLVcc

Power supply for

PLL

Power supply for the on-chip PLL

oscillator.

Power supply

PLLVss

Ground for PLL

Ground pin for the on-chip PLL

oscillator.

EXTAL

External clock

Connected to a crystal resonator.

An external clock signal may also be

input to the EXTAL pin.

Clock

XTAL

Crystal

Connected to a crystal resonator.

System clock

Supplies the system clock to external

devices.

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