M32C88 Datasheet, PDF(40/461 Page) Renesas Technology Corp – RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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M32C88 Datasheet, PDF (40/461 Pages) Renesas Technology Corp – RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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M32C/88 Group (M32C/88T)

2. Central Processing Unit (CPU)

2. Central Processing Unit (CPU)

Figure 2.1 shows the CPU registers.

The register bank is comprised of 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 Registers

R2

R3

b23

b15

R0H

b0

R0L

R1H

R1L

R2

R3

A0

A1

SB

FB

Data Register(1)

Address Register(1)

Static Base Register(1)

Frame Base Register(1)

USP

ISP

INTB

PC

User Stack Pointer

Interrupt Stack Pointer

Interrupt Table Register

Program Counter

FLG

Flag Register

b15

IPL

b8 b7

b0

U I OB SZ DC

Carry Flag

Debug Flag

Zero Flag

Sign Flag

Register Bank Select Flag

Overflow Flag

Interrupt Enable Flag

Stack Pointer Select Flag

Reserved Space

Processor Interrupt Priority Level

Reserved Space

High-speed Interrupt Registers b23

b15

SVF

SVP

VCT

b0

Flag Save Register

PC Save Register

Vector Register

DMAC-associated Registers

b23

b7

b0

DMD0

b15

DMD1

DCT0

DCT1

DRC0

DRC1

DMA0

DMA1

DRA0

DRA1

DSA0

DSA1

DMA Mode Register

DMA Transfer Count Register

DMA Transfer Count Reload Register

DMA Memory Address Register

DMA Memory Address Reload Register

DMA SFR Address Register

NOTE:

1. The register bank is comprised of these registers. Two sets of register banks are provided.

Figure 2.1 CPU Register

Rev. 1.10 Oct. 18, 2005 Page 17 of 435

REJ09B0162-0110

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