M30621MCM-F52GP 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M30621MCM-F52GP

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

Memory

Mitsubishi microcomputers

M16C / 62A Group (80-pin)

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Operation of Functional Blocks

The M16C/62A (80-pin version) group accommodates certain units in a single chip. These units include

ROM and RAM to store instructions and data and the central processing unit (CPU) to execute arithmetic/

logic operations. Also included are peripheral units such as timers, serial I/O, D-A converter, DMAC, CRC

calculation circuit, A-D converter, and I/O ports.

The following explains each unit.

Memory

Figure 1.4.1 is a memory map of the M16C/62A (80-pin version) group. The address space extends the 1M

bytes from address 0000016 to FFFFF16. From FFFFF16 down is ROM. For example, in the M30623MCA-

XXXGP, there is 128K bytes of internal ROM from E000016 to FFFFF16. The vector table for fixed interrupts

_______

such as the reset and NMI are mapped to FFFDC16 to FFFFF16. The starting address of the interrupt

routine is stored here. The address of the vector table for timer interrupts, etc., can be set as desired using

the internal register (INTB). See the section on interrupts for details.

From 0040016 up is RAM. For example, in the M30623MCA-XXXGP, 5K bytes of internal RAM is mapped

to the space from 0040016 to 017FF16. In addition to storing data, the RAM also stores the stack used when

calling subroutines and when interrupts are generated.

The SFR area is mapped to 0000016 to 003FF16. This area accommodates the control registers for periph-

eral devices such as I/O ports, A-D converter, serial I/O, and timers, etc. Figures 1.7.1 to 1.7.3 are location

of peripheral unit control registers. Any part of the SFR area that is not occupied is reserved and cannot be

used for other purposes.

The special page vector table is mapped to FFE0016 to FFFDB16. If the starting addresses of subroutines

or the destination addresses of jumps are stored here, subroutine call instructions and jump instructions

can be used as 2-byte instructions, reducing the number of program steps.

0000016

SFR area

For details, see Figures

1.7.1 to 1.7.3

0040016

Internal RAM area

XXXXX16

FFE0016

Special page

vector table

Type No.

M30623M4A

M30623M8A

M30623MAA

M30623MCA

M30621M8A

M30621MCA/FCA

M30621MAA

M30625MGA/FGA

Address

XXXXX16

00FFF16

013FF16

017FF16

017FF16

02BFF16

02BFF16

02BFF16

053FF16

Address

YYYYY16

F800016

F000016

E800016

E000016

F000016

E000016

E800016

C000016

Reserved

area

YYYYY16

Internal ROM area

FFFFF16

FFFDC16

FFFFF16

Undefined instruction

Overflow

BRK instruction

Address match

Single step

Watchdog timer

DBC

NMI

Reset

Note: Set PM13 to “1” in M30625MGA/FGA. Otherwise set PM13 to “0”.

Figure 1.4.1. Memory map

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