M32C82_15 Datasheet, PDF(23/84 Page) Renesas Technology Corp – SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER

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M32C82_15 Datasheet, PDF (23/84 Pages) Renesas Technology Corp – SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER

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M32C/82 Group

2. Central Processing Unit (CPU)

Figure 2.1 shows the CPU registers.

A register bank comprises 8 registers (R0, R1, R2, R3, A0, A1, SB and FB) out of 28 CPU registers. Two

sets of register banks are provided.

b31

General register

b23

b15

R0H

R0L

R1H

R1L

Data register(1)

Address register(1)

Static base register(1)

Frame base register(1)

USP

ISP

INTB

User stack pointer

Interrupt stack pointer

Interrupt table register

Program counter

FLG

Flag register

b15

IPL

b8 b7

U I OB SZ DC

Carry flag

Debug flag

Zero flag

Sign flag

Overflow flag

Interrupt enable flag

Stack pointer select flag

Reserved space

Processor interrupt priority level

Reserved space

High-speed interrupt register b23

b15

SVF

SVP

VCT

Flag save register

PC save register

Vector register

DMAC related register

DMD0

DMA mode register

b15

DMD1

DCT0

DCT1

DMA transfer count register

DRC0

b23

DRC1

DMA0

DMA1

DMA transfer count reload register

DMA memory address register

DRA0

DRA1

DMA memory address reload register

DSA0

DSA1

DMA SFR adress register

NOTES:

1. A register bank comprise these registers. Two sets of register banks are provided.

Figure 2.1 CPU Register

Rev.1.20 Jun. 01, 2004 page 21 of 80

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