HD64F3687 datasheet(39/536 Pages) RENESAS

39 / 536 page

Section 1 Overview

Rev.5.00 Nov. 02, 2005 Page 7 of 500

REJ09B0027-0500

1.4

Pin Functions

Table 1.1

Pin Functions

Pin No.

Type

Symbol

FP-64E

FP-64A

I/O

Functions

Power

source pins

Input

Power supply pin. Connect this pin to the

system power supply.

Input

Ground pin. Connect this pin to the system

power supply (0V).

Input

Analog power supply pin for the A/D converter.

When the A/D converter is not used, connect

this pin to the system power supply.

Input

Internal step-down power supply pin. Connect a

capacitor of around 0.1

µF between this pin and

the Vss pin for stabilization.

Clock pins

OSC1

Input

OSC2

Output

These pins connect with crystal or ceramic

resonator for the system clock, or can be used

to input an external clock.

See section 5, Clock Pulse Generators, for a

typical connection.

Input

Output

These pins connect with a 32.768 kHz crystal

resonator for the subclock. See section 5, Clock

Pulse Generators, for a typical connection.

System

control

RES

Input

Reset pin. The pull-up resistor (typ. 150 k

Ω) is

incorporated. When driven low, the chip is reset.

TEST

Input

Test pin. Connect this pin to Vss.

NMI

Input

Non-maskable interrupt request input pin. Be

sure to pull-up by a pull-up resistor.

Interrupt

pins

IRQ0 to

IRQ3

51 to 54

Input

External interrupt request input pins. Can select

the rising or falling edge.

WKP0 to

WKP5

13, 14,

19 to 22

Input

External interrupt request input pins. Can select

the rising or falling edge.

RTC

TMOW

Output

This is an output pin for divided clocks.

Timer B1

TMIB1

Input

External event input pin.

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