H8SSLASH2224 datasheet(143/1071 Pages) RENESAS

143 / 1071 page

Section 1 Overview

Rev. 5.00 Aug 08, 2006 page 57 of 982

REJ09B0054-0500

Table 1.8

Pin Functions of H8S/2237 Group and H8S/2227 Group

Pin No.

Type

Symbol

TFP-100B

TFP-100BV

TFP-100G

TFP-100GV

FP-100B*

FP-100BV*

FP-100A*

FP-100AV*

2 I/O

Function

Power supply VCC

Input

For connection to the power supply. Connect all

VCC pins to the system power supply.

VSS

Input

For connection to the power supply (0 V).

Connect all VSS pins to the system power supply

(0 V).

Clock

XTAL

Input

For connection to a crystal resonator. For

examples of crystal resonator connection and

external clock input, see section 23, Clock Pulse

Generator.

EXTAL

Input

For connection to a crystal resonator. This pin

can be also used for external clock input. For

examples of crystal resonator connection and

external clock input, see section 23, Clock Pulse

Generator.

OSC1

Input

Connects to a 32.768 kHz crystal resonator. See

section 23, Clock Pulse Generator, for typical

connection diagrams for a crystal resonator.

OSC2

Input

Connects to a 32.768 kHz crystal resonator. See

section 23, Clock Pulse Generator, for typical

connection diagrams for a crystal resonator.

Output Supplies the system clock to external devices.

Operating

mode

control

MD2

MD1

MD0

Input

Sets the operating mode. Inputs at these pins

should not be changed during operation. Except

for mode changing, be sure to fix the levels of the

mode pins (MD2 to MD0) by pulling them down

or pulling them up until the power turns off.

System

control

RES*3

Input

Reset input pin. When this pin is low, the chip

enters in the power-on reset state.

MRES

Input

When this pin is low, the chip enters in the

manual reset state.

STBY*3

Input

When this pin is low, a transition is made to

hardware standby mode.

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