M30622ECTFP datasheet(23/184 Pages) MITSUBISHI

23 / 184 page

Tentative Specifications REV.A

Mitsubishi microcomputers

M16C / 62T Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Specifications in this manual are tentative and subject to change.

Under

development

Memory Space Expansion Functions

(2) Expansion mode 1

In this mode, the memory space can be expanded by 176K bytes in addition to that in normal mode.

Figure 1.8.2 shows the memory location and chip select area in expansion mode 1.

_______

In accessing data in expansion mode 1, CS3, CS2, and CS1 go active in the area from 0400016 through

_______

2FFFF16; in fetching a program, CS0 goes active. That is, the address space is expanded by using the

________

_______

area from 0400016 through 2FFFF16 (176K bytes) appropriately for accessing data (CS3, CS2, CS1)

_______

and fetching a program (CS0).

Figure 1.8.2. Memory location and chip select area in expansion mode 1

Microprocessor

mode

SFR area

Internal RAM

area

External

area

Internal area reserved

0000016

0040016

XXXXX16

YYYYY16

FFFFF16

D000016

0800016

Memory

expansion mode

SFR area

Internal RAM

area

External area

Internal ROM

area

Internal area reserved

CS3(16K bytes)

CS2(128 Kbytes)

CS1(32K bytes)

2800016

3000016

0400016

Expansion mode 1 (memory space = 1.2M bytes for PM15 = 1, PM14 = 0)

CS0

Memory expansion

mode:

816K bytes

Microprocessor mode:

1008K bytes

0400016

2FFFF16

3000016

FFFFF16

176K bytes

= the extent of memory expanded

CS0:active both in fetching a program

and in accessing data

CS0:active in fetching a program

CS1, CS2, CS3:active in accessing data

Type No.

XXXXX16 YYYYY16

M30623M4T-XXXGP

M30622M8T/M8V-XXXFP

M30623M8T/M8V-XXXGP

M30622MCT/MCV-XXXFP

M30623MCT/MCV-XXXGP

00FFF16

F800016

013FF16

F000016

017FF16

E000016

Note 1. M30623(80-pin package) is not provided with the

output pin for the chip select signal.

Note 2. The M16C/62T group is not guaranteed to operate

in memory expansion and microprocessor modes.

Note 3. The memory maps in single-chip mode are omitted.

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