M32C80 Datasheet, PDF(53/352 Page) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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M32C80 Datasheet, PDF (53/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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M32C/80 Group

6. Processor Mode

NOTE

The M32C/80 Group is ROMless device. Connect the CNVSS pin to VCC1.

Use the M32C/80 Group in microprocessor mode after reset.

6. Processor Mode

6.1 Types of Processor Mode

Single-chip mode, memory expansion mode, or microprocessor mode can be selected as a processor

mode. Table 6.1 lists a feature of the processor mode.

Table 6.1 Processor Mode Feature

Processor Mode

Accessable Space

Single-chip Mode

SFRs, Internal RAM

Memory Expansion Mode SFRs, Internal RAM, External Space(1)

Microprocessor Mode

SFRs, Internal RAM, External Space(1)

NOTE:

1. Refer to 7. Bus for details.

Pin Status as I/O Ports

All pins assigned to I/O ports or to I/O pins

for the peripheral functions

Some pins assigned to bus control pins(1)

Some pins assigned to bus control pins(1)

Rev. 1.00 Nov. 01, 2005 Page 34 of 330

REJ09B0271-0100

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