M16C65 Datasheet, PDF (187/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
10. Processor Mode
10. Processor Mode
Note
Do not use memory expansion mode and microprocessor mode in the 80-pin package.
10.1 Introduction
Three processor modes are available to choose from: single-chip mode, memory expansion mode, and
microprocessor mode. Table 10.1 shows the Features of Processor Modes.
Table 10.1 Features of Processor Modes
Processor Mode
Access Space
Pins Assigned as I/O Ports
Single-chip mode
SFR, internal RAM, internal ROM
All pins are I/O ports or
peripheral function I/O pins
Memory expansion mode SFR, internal RAM, internal ROM, _{Some pins serve as bus control pins} ⁽¹⁾
external area ⁽¹⁾
Microprocessor mode _{SFR, internal RAM, external area} ⁽¹⁾ _{Some pins serve as bus control pins} ⁽¹⁾
Note:
1. Refer to 11. “Bus” for details.
Table 10.2 I/O Pins
Pin Name
CNVSS
Input
I/O Type
Function
Selects a processor mode
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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