Contents-1
Contents
Chapter 1
Overview
1.1 Overview ............................................................................................................ 1-1
1.2 Features ............................................................................................................. 1-1
1.3 Block Diagram .................................................................................................... 1-4
1.4 Pin Configuration ................................................................................................ 1-5
1.5 Pin Descriptions ................................................................................................. 1-7
1.5.1 Description of Each Pin ................................................................................ 1-7
1.5.2 Pin Configuration ........................................................................................ 1-10
1.5.3 Connections for Unused Pins ..................................................................... 1-11
1.6 Basic Operational Timing ................................................................................. 1-12
Chapter 2
CPU Architecture
2.1 Overview ............................................................................................................ 2-1
2.2 Memory Space ................................................................................................... 2-1
2.2.1 Memory Space Expansion .......................................................................... 2-1
2.2.2 Program Memory Space ............................................................................. 2-3
(1) Accessing program memory space ............................................................ 2-5
(2) Vector table area ........................................................................................ 2-5
(3) VCAL table area ......................................................................................... 2-7
(4) ACAL area .................................................................................................. 2-8
2.2.3 Data Memory Space ................................................................................... 2-9
(1) Special function register (SFR) area ......................................................... 2-11
(2) Reserved area .......................................................................................... 2-11
(3) Internal RAM area ..................................................................................... 2-11
(4) Fixed page (FIX) area ............................................................................... 2-11
(5) Local register setting area ........................................................................ 2-13
(6) External data memory area ...................................................................... 2-13
(7) Common area ........................................................................................... 2-14
2.2.4 Data Memory Access ................................................................................. 2-14
(1) Byte operations ......................................................................................... 2-14
(2) Word operations ....................................................................................... 2-15
2.3 Registers .......................................................................................................... 2-16
2.3.1 Arithmetic Register (ACC) ........................................................................ 2-16
2.3.2 Control Registers ...................................................................................... 2-17
(1) Program status word (PSW) ..................................................................... 2-17
(2) Program counter (PC) ............................................................................... 2-21
(3) Local register base (LRB) ......................................................................... 2-21
(4) System stack pointer (SSP) ...................................................................... 2-22