H83069RF datasheet(146/1003 Pages) RENESAS

146 / 1003 page

Rev. 5.0, 09/04, page 124 of 978

Bit 3—Burst Cycle Select 0 (BRSTS0): Selects the number of words that can be accessed in a

burst ROM interface burst access.

Bit 3

BRSTS0

Description

Max. 4 words in burst access (burst access on match of address bits above

A3)

(Initial value)

Max. 8 words in burst access (burst access on match of address bits above

A4)

Bit 2—Expansion Memory Map Control (EMC): Selects either of the two memory maps.

Bit 2

EMC

Description

Selects the memory map shown in figure 3.2: see section 3.6, Memory Map* in

Each Operating Mode

Selects the memory map shown in figure 3.1: see section 3.6, Memory Map* in

Each Operating Mode

(Initial value)

Note: * When the memory map is switched using EMC, the following area combinations in the

on-chip RAM area cannot be used.

(EMC bit = 1)

(EMC bit = 0)

Mode 1 or 2

(1)

H'FDEE0 to H'FDF1F

↔

H'FBEE0 to H'FBF1F

(2)

H'FFE80 to H'FFEDF

↔

H'FFF80 to H'FFFDF

(3)

H'FFEE0 to H'FFF1F

↔

H'FDEE0 to H'FDF1F

Mode 3 or 4

(1)

H'FFDEE0 to H'FFDF1F

↔

H'FFBEE0 to H'FFBF1F

(2)

H'FFFE80 to H'FFFEDF

↔

H'FFFF80 to H'FFFFDF

(3)

H'FFFEE0 to H'FFFF1F

↔

H'FFDEE0 to H'FFDF1F

Mode 5

(1)

H'FFDEE0 to H'FFDF1F

↔

H'FFBEE0 to H'FFBF1F

(2)

H'FFFE80 to H'FFFEDF

↔

H'FFFF80 to H'FFFFDF

(3)

H'FFFEE0 to H'FFFF1F

↔

H'FFDEE0 to H'FFDF1F

Mode 7

(1)

H'FDEE0 to H'FDF1F

↔

H'FBEE0 to H'FBF1F

(2)

H'FFE80 to H'FFEDF

↔

H'FFF80 to H'FFFDF

(3)

H'FFEE0 to H'FFF1F

↔

H'FDEE0 to H'FDF1F

H83069RF Datasheet(PDF) 146 Page - Renesas Technology Corp

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