SH-2A View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

SH-2A

Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Renesas Electronics 

Contents

Section 1 Overview............................................................................................................. 1

1.1 Features............................................................................................................................. 1

Section 2 Programming Model........................................................................................ 3

2.1 Data Formats..................................................................................................................... 3

2.2 Register Configuration...................................................................................................... 3

2.2.1 General Registers................................................................................................. 3

2.2.2 Control Registers ................................................................................................. 5

2.2.3 System Registers.................................................................................................. 6

2.2.4 Floating-Point Registers ...................................................................................... 7

2.2.5 Floating-Point System Registers.......................................................................... 8

2.2.6 Register Banks..................................................................................................... 10

2.2.7 Register Initial Values ......................................................................................... 10

2.3 Data Formats..................................................................................................................... 11

2.3.1 Data Format in Registers ..................................................................................... 11

2.3.2 Data Formats in Memory..................................................................................... 11

2.3.3 Immediate Data Format ....................................................................................... 12

2.4 Processing States .............................................................................................................. 13

Section 3 Exception Handling ......................................................................................... 15

3.1 Overview .......................................................................................................................... 15

3.1.1 Exception Handling Types and Priority............................................................... 15

3.1.2 Exception Handling Operation ............................................................................ 17

3.1.3 Exception Vector Table ....................................................................................... 18

3.2 Resets................................................................................................................................ 20

3.2.1 Types of Reset ..................................................................................................... 20

3.2.2 Power-On Reset................................................................................................... 20

3.2.3 Manual Reset ....................................................................................................... 21

3.3 Address Errors .................................................................................................................. 22

3.3.1 Address Error Sources ......................................................................................... 22

3.3.2 Address Error Exception Handling...................................................................... 23

3.4 RAM Errors ...................................................................................................................... 23

3.4.1 RAM Error Sources ............................................................................................. 23

3.4.2 RAM Error Exception Handling.......................................................................... 23

3.5 Register Bank Errors......................................................................................................... 24

3.5.1 Register Bank Error Sources................................................................................ 24

3.5.2 Register Bank Error Exception Handling ............................................................ 24

3.6 Interrupts........................................................................................................................... 25

Rev. 3.00 Jul 08, 2005 page vii of xiv

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