H8S2245 datasheet(7/818 Pages) RENESAS

7 / 818 page

Rev.3.00 Mar. 26, 2007 Page vii of xlii

REJ09B0355-0300

Main Revisions for This Edition

Item

Page Revision (See Manual for Details)

All

—

• Company name and brand names amended

(Before) Hitachi, Ltd.

→ (After) Renesas Technology Corp.

• Designation for categories amended

(Before) H8/2245 Series

→ (After) H8/2245 Group

1.1 Overview

Table 1.1 Overview

Table 1.1 amended

CPU

• High-speed operation suitable for realtime control

 Maximum clock rate: 20 MHz

 High-speed arithmetic operations (20-MHz operation)

1.3.2 Pin Functions in

Each Operating Mode

8 to

Note

*2 added

Mode 2

*1 Mode 3*1 Mode 6*1 Mode 7*1 PROM Mode*2

Table 1.2 Pin Functions

in Each Operating Mode

Notes: 1. Cannot be used in the H8S/2240.

2. NC should be left open.

1.3.3 Pin Functions

Table 1.3 Pin Functions

Description amended

Operating mode control

... H8S/2245 Group is operating. Except for mode changing, be

sure to fix the levels of the mode pins (MD

2 to MD0) by pulling

them down or pulling them up until the power turns off.

2.1.1 Features

Description amended

• High-speed operation

 Maximum clock rate: 20MHz

 8/16/32-bit register-register add/subtruct: 50 ns (20-MHz

operation)

 8 × 8-bit register-register multiply: 600 ns (20-MHz

operation)

 16 ÷ 8-bit register-register divide: 600 ns (20-MHz

operation)

 16 × 16-bit register-register multiply: 1000 ns (20-MHz

operation)

 32 ÷ 16-bit register-register divide: 600 ns (20-MHz

operation)

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