APPLICATION NOTE

R01AN0585EJ0202 Rev.2.02

Page 1 of 22

Feb 14, 2014

RX62N Group and RX621 Group

16-Bit SDRAM Connection and Access Examples

Introduction

This application note presents methods for connecting and accessing 16-bit SDRAM to RX62N and RX621 Group

microcontrollers.

Target Devices

RX62N Group and RX621 Group

This application note also applies to RX family microcontrollers that have the same I/O registers (peripheral module

control registers) as the RX62N and RX621 Group microcontrollers. However, since there have been additions to

certain functions, please check the manuals carefully for differences. When applying this application note to other

microcontrollers, the information presented in this application note must be modified to match the specifications of the

microcontroller used and the resulting system tested thoroughly.

Contents

1.

Specifications .................................................................................................................................... 2

2.

Operation Confirmation Conditions ................................................................................................... 3

3.

Usage Notes...................................................................................................................................... 3

4.

Operating Description........................................................................................................................ 4

5.

Software Documentation ................................................................................................................. 12

6.

Reference Documents..................................................................................................................... 21

R01AN0585EJ0202

Rev.2.02

Feb 14, 2014