M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 10
M30622M4
Manufacturer Part Number
M30622M4
Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet
1.M30622M4.pdf
(276 pages)
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Memory
10
Operation of Functional Blocks
Memory
Figure 1.4.1. Memory map
The M16C/62 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.
Figure 1.4.1 is a memory map of the M16C/62 group. The address space extends the 1M bytes from
address 00000
is 128K bytes of internal ROM from E0000
reset and NMI are mapped to FFFDC
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 00400
the space from 00400
calling subroutines and when interrupts are generated.
The SFR area is mapped to 00000
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 FFE00
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.
In memory expansion mode and microprocessor mode, a part of the spaces are reserved and cannot be
used. For example, in the M30622MC-XXXFP, the following spaces cannot be used.
• The space between 01800
• The space between D0000
M30622M4
M30620M8
M30620MA
M30620MC/EC
M30622M8/E8
M30622MA
M30622MC
M30624MG/FG
_______
Type No.
16
up is RAM. For example, in the M30622MC-XXXFP, 5K bytes of internal RAM is mapped to
16
Address XXXXX
to FFFFF
00FFF
02BFF
02BFF
02BFF
013FF
017FF
017FF
053FF
16
16
16
16
16
16
16
16
16
16
to 017FF
16
Address YYYYY
. From FFFFF
E8000
E0000
E8000
E0000
C0000
F0000
F0000
F8000
16
16
16
16
16
16
16
16
16
16
and 03FFF
and D7FFF
16
16
16
. In addition to storing data, the RAM also stores the stack used when
to 003FF
16
Note 1: During memory expansion and microprocessor modes, can not be used.
Note 2: In memory expansion mode, can not be used.
Note 3: These memory maps show an instance in which PM13 is set to 0; but in the
00000
XXXXX
D0000
YYYYY
FFFFF
04000
00400
to FFFFF
16
16
16
16
16
16
16
16
16
case of M30624MG/FG, they show an instance in which PM13 is set to 1.
16
For details, see Figures
16
Internal ROM area
Internal RAM area
to FFFFF
down is ROM. For example, in the M30622MC-XXXFP, there
16
Internal reserved
External area
Internal reserved
(Memory expansion and microprocessor modes)
1.7.1 to 1.7.3
area (Note 1)
(Memory expansion mode)
area (Note 2)
. This area accommodates the control registers for periph-
SFR area
16
16
. The starting address of the interrupt routine is stored
to FFFDB
16
. The vector table for fixed interrupts such as the
16
. If the starting addresses of subroutines
FFFFF
FFE00
FFFDC
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
16
16
Undefined instruction
BRK instruction
Watchdog timer
Special page
Address match
vector table
Single step
Overflow
Reset
DBC
NMI
Mitsubishi microcomputers
M16C / 62 Group
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