M30620FCAFP datasheet(174/274 Pages) MITSUBISHI

部件名	M30620FCAFP

功能描述	SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

PDF	274 Pages

Scroll/Zoom	100%

制造商	MITSUBISHI [Mitsubishi Electric Semiconductor]

网页	http://www.mitsubishichips.com

标志

174 / 274 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Usage precaution

174

External ROM version

The external ROM version is operated only in microprocessor mode, so be sure to perform the following:

• Connect CNVss pin to Vcc.

• Fix the processor mode bit to “112”

Notes on the microprocessor mode and transition after shifting from the micropro-

cessor mode to the memory expansion mode

• Microprocessor mode

In microprocessor mode, the SFR, internal RAM, and external memory space can be accessed.

For that reason, the internal ROM area cannot be accessed.

• Memory expansion mode

In memory expansion mode, external memory can be accessed in addition to the internal memory

space (SFR, internal RAM, and internal ROM).

However, after the reset has been released and the operation of shifting from the microprocessor

mode has started (“H” applied to the CNVSS pin), the internal ROM area cannot be accessed even if

the CPU shifts to the memory expansion mode.

M30620FCAFP 数据表(PDF) 174 Page - Mitsubishi Electric Semiconductor