SH7243 datasheet(94/1726 Pages) RENESAS

Part #	SH7243

Description	Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

PDF	1726 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 3 MCU Operating Modes

Rev. 1.00 Jun. 26, 2008 Page 64 of 1692

REJ09B0393-0100

3.2

Input/Output Pins

Table 3.2 describes the configuration of operating mode related pin.

Table 3.2

Pin Configuration

Pin Name

Input/Output

Function

MD0

Input

Designates operating mode through the level applied to this pin

MD1

Input

Designates operating mode through the level applied to this pin

FWE

Input

Enables, by hardware, programming/erasing of the on-chip flash

memory

3.3

Operating Modes

3.3.1

Mode 0 (MCU Extension Mode 0)

In this mode, CS0 space becomes external memory spaces with 32-bit bus width (SH7286) or 16-

bit bus width (SH7285 and SH7243).

3.3.2

Mode 1 (MCU Extension Mode 1)

In this mode, CS0 space becomes external memory spaces with 16-bit bus width (SH7286) 8-bit

bus width (SH7285 and SH7243).

3.3.3

Mode 2 (MCU Extension Mode 2)

The on-chip ROM is active and CS0 space can be used in this mode.

3.3.4

Mode 3 (Single Chip Mode)

All ports can be used in this mode, however the external address cannot be used.

SH7243 Datasheet(PDF) 94 Page - Renesas Technology Corp