M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 11
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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Part Number:
M30622M4A-462GP D3
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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CPU
Central Processing Unit (CPU)
Figure 1.5.1. Central processing unit register
The CPU has a total of 13 registers shown in Figure 1.5.1. Seven of these registers (R0, R1, R2, R3, A0,
A1, and FB) come in two sets; therefore, these have two register banks.
(1) Data registers (R0, R0H, R0L, R1, R1H, R1L, R2, and R3)
(2) Address registers (A0 and A1)
Data registers (R0, R1, R2, and R3) are configured with 16 bits, and are used primarily for transfer and
arithmetic/logic operations.
Registers R0 and R1 each can be used as separate 8-bit data registers, high-order bits as (R0H/R1H),
and low-order bits as (R0L/R1L). In some instructions, registers R2 and R0, as well as R3 and R1 can
use as 32-bit data registers (R2R0/R3R1).
Address registers (A0 and A1) are configured with 16 bits, and have functions equivalent to those of data
registers. These registers can also be used for address register indirect addressing and address register
relative addressing.
In some instructions, registers A1 and A0 can be combined for use as a 32-bit address register (A1A0).
R1
R2
R3
A0
FB
R0
A1
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
(Note)
Note: These registers consist of two register banks.
b15
b15
b15
b15
b15
b15
b15
H
H
b8 b7
b8 b7
L
L
b0
b0
b0
b0
b0
b0
b0
Frame base
registers
Data
registers
Address
registers
IPL
PC
INTB
b19
b19
USP
ISP
SB
FLG
H
U
b15
b15
b15
b15
I
O
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
B
L
S
Z
D
C
b0
b0
b0
b0
b0
b0
Interrupt table
register
Static base
register
Program counter
User stack pointer
Interrupt stack
pointer
Flag register
Mitsubishi microcomputers
M16C / 62 Group
11
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