R5F5630ECDFB datasheet(74/165 Pages) RENESAS

74 / 165 page

R01DS0060EJ0100 Rev.1.00

Page 74 of 168

Sep 13, 2011

RX630 Group

3. Address Space

3.2

External Address Space

The external address space is divided into up to eight CS areas (CS0 to CS7), each corresponding to the CSn# signal

output from a CSn# (n = 0 to 7) pin.

Figure 3.2 shows the address ranges corresponding to the individual CS areas (CS0 to CS7) in on-chip ROM disabled

extended mode.

Figure 3.2

Correspondence between External Address Spaces and CS Areas

(In On-Chip ROM Disabled Extended Mode)

CS7 (16 Mbytes)

CS6 (16 Mbytes)

CS5 (16 Mbytes)

CS4 (16 Mbytes)

CS3 (16 Mbytes)

CS2 (16 Mbytes)

CS1 (16 Mbytes)

CS0 (16 Mbytes)

On-chip RAM

External address space

(CS area)

Reserved area*1

Peripheral I/O registers

Reserved area*1

External address space*2

0000 0000h

0008 0000h

0010 0000h

0100 0000h

0800 0000h

FF00 0000h

0002 0000h

0100 0000h

0200 0000h

0300 0000h

0400 0000h

0500 0000h

0600 0000h

0700 0000h

01FF FFFFh

02FF FFFFh

03FF FFFFh

04FF FFFFh

05FF FFFFh

06FF FFFFh

07FF FFFFh

FFFF FFFFh

FF00 0000h

Note 1.

Reserved areas should not be accessed.

Note 2.

The CS0 area is disabled in on-chip ROM enabled extended mode.

In this mode, the address space for addresses above 0800 0000h is as shown in figure on

this section, Memory Map in Each Operating Mode.

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