SH7011 Datasheet, PDF(82/292 Page) Renesas Technology Corp – CMOS single-chip microprocessors

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SH7011 Datasheet, PDF (82/292 Pages) Renesas Technology Corp – CMOS single-chip microprocessors

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Section 7 Bus State Controller (BSC)

7.1 Overview

The bus state controller (BSC) divides up the address spaces and outputs control for various types

of memory. This enables memories like SRAM, and ROM to be linked directly to the LSI without

external circuitry.

7.1.1 Features

â¢ Address space is divided into four spaces

ï£§ A maximum linear 4 Mbytes for each of address spaces CS0-CS3

ï£§ 16-bit bus width

ï£§ Wait states can be inserted by software for each space (0-3 waits)

ï£§ In external memory space access, wait states can be inserted by the WAIT pin

ï£§ Outputs control signals for each space according to the type of memory connected

â¢ RAM interface

ï£§ On-chip RAM access of 32 bits in 1 state

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