H8S2245 datasheet(55/818 Pages) RENESAS

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Section 1 Overview

Rev.3.00 Mar. 26, 2007 Page 13 of 772

REJ09B0355-0300

Pin No.

Type

Symbol

FP-100B, TFP-100B

I/O

Name and Function

Operating mode

control

2 to

61, 58, 57

Input

Mode pins: These pins set the

operating mode.

The relation between the settings of

pins MD

2 to MD0 and the operating

mode is shown below. These pins

should not be changed while the

H8S/2245 Group is operating.

Except for mode changing, be sure to

fix the levels of the mode pins (MD

2 to

0) by pulling them down or pulling

them up until the power turns off.

Operating

Mode

000

—

Mode 1

Mode 2*

Mode 3*

100Mode 4

Mode 5

Mode 6*

Mode 7*

Note: * Cannot be used in the

H8S/2240.

System control

RES

Input

Reset input: When this pin is driven

low, the chip is reset. The type of

reset can be selected according to the

NMI input level. At power-on, the NMI

pin input level should be set high.

STBY

Input

Standby: When this pin is driven low,

a transition is made to hardware

standby mode.

BREQ

Input

Bus request: Used by an external bus

master to issue a bus request to the

H8S/2245 Group.

BREQO

Output Bus request output: The external bus

request signal used when an internal

bus master accesses external space

in the external bus-released state.

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