R5F21143DSP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

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R5F21143DSP

R8C/14 Group, R8C/15 Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Renesas Electronics 

R8C/14 Group, R8C/15 Group

2. Central Processing Unit (CPU)

2. Central Processing Unit (CPU)

Figure 2.1 shows the CPU Register. The CPU contains 13 registers. Of these, R0, R1, R2, R3, A0, A1 and

FB comprise a register bank. Two sets of register banks are provided.

b31

R2

R3

b15

b8b7

b0

R0H (high-order of R0) R0L (low-order of R0)

R1H (high-order of R1) R1L (low-order of R1)

R2

R3

A0

A1

FB

Data Registers (1)

Address Registers (1)

Frame Bass Register (1)

b19

b15

b0

INTBH

INTBL

The 4-high order bits of INTB are INTBH and

the 16-low bits of INTB are INTBL.

b19

b0

PC

Interrupt Table Register

Program Counter

b15

b0

USP

User Stack Pointer

ISP

Interrupt Stack Pointer

SB

Static Base Register

b15

b0

FLG

b15

IPL

b8 b7

b0

U I OB S ZDC

Flag Register

Carry Flag

Debug Flag

Zero Flag

Sign Flag

Register Bank Select Flag

Overflow Flag

Interrupt Enable Flag

Stack Pointer Select Flag

Reserved Bit

Processor Interrupt Priority Level

Reserved Bit

NOTES:

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

Figure 2.1 CPU Register

Rev.2.10 Jan 19, 2006 Page 10 of 253

REJ09B0164-0210

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