SH7014 datasheet(48/754 Pages) RENESAS

48 / 754 page

1. SH7014/16/17 Overview

Rev.5.00 Sep. 27, 2007 Page 14 of 716

REJ09B0398-0500

1.3.3

Pin Functions

Table 1.2 lists the pin functions.

Table 1.2

Pin Functions

Classification

Symbol

I/O

Name

Function

Power supply

Supply

Connects to power supply.

Connect all V

CC pins to the system

supply. No operation will occur if

there are any open pins.

Ground

Connects to ground.

Connect all V

SS pins to the system

ground. No operation will occur if

there are any open pins.

Clock

PLLV

PLL supply

On-chip PLL oscillator supply.

PLLV

PLL ground

On-chip PLL oscillator ground.

PLLCAP

PLL capacitance

On-chip PLL oscillator external

capacitance connection pin.

EXTAL

External clock

Connect a crystal oscillator. Also, an

external clock can be input to the

EXTAL pin.

XTAL

Crystal

Connect a crystal oscillator.

System clock

Supplies the system clock to

peripheral devices.

System control

RES

Power-on reset

Power-on reset when low

WDTOVF

Watchdog timer

overflow

Overflow output signal from WDT

Operating mode

control

MD0 to MD3

Mode set

Determines the operating mode. Do

not change input value during

operation.

FWP

Flash memory

write protect

Protects flash memory from being

written or deleted.

Interrupts

NMI

Non-maskable

interrupt

Non-maskable interrupt request pin.

Enables selection of whether to

accept on the rising or falling edge.

IRQ0 to

IRQ3,

IRQ6, IRQ7

Interrupt requests

0 to 3, 6,7

Maskable interrupt request pins.

Allows selection of level input and

edge input.

Address bus

A0 to A21

Address bus

Outputs addresses.

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