HD6433644R datasheet(30/549 Pages) RENESAS

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Section 1 Overview

Rev. 6.00 Sep 12, 2006 page 10 of 526

REJ09B0326-0600

1.3.2

Pin Functions

Table 1.2 outlines the pin functions of the H8/3644 Group.

Table 1.2

Pin Functions

Pin No.

Type

Symbol

FP-64A

DP-64S

TFP-80C I/O

Name and Functions

Power

source pins

VCC

Input

Power supply: All VCC pins

should be connected to the user

system VCC.

VSS

8, 11

Input

Ground: All VSS pins should be

connected to the user system

GND.

AVCC

Input

Analog power supply: This is

the power supply pin for the A/D

converter. When the A/D

converter is not used, connect

this pin to the user system VCC.

AVSS

Input

Analog ground: This is the A/D

converter ground pin. It should be

connected to the user system

GND.

Clock pins

OSC1

Input

System clock: These pins

connect to a crystal or ceramic

resonator, or can be used to input

an external clock.

OSC2

Output

See section 4, Clock Pulse

Generators, for a typical

connection diagram.

Input

Subclock: These pins connect to

a 32.768-kHz crystal resonator.

Output

See section 4, Clock Pulse

Generators, for a typical

connection diagram.

System

control

RES

Input

Reset: When this pin is driven

low, the chip is reset

TEST

Input

Test: This is a test pin, not for

use in application systems. It

should be connected to VSS.

HD6433644R Datasheet(PDF) 30 Page - Renesas Technology Corp

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