Contents - 1
Contents
Chapter 1
Overview
1.1
Overview............................................................................................................................ 1-1
1.2
Features .............................................................................................................................. 1-1
1.3
Block Diagram ................................................................................................................... 1-5
1.4
Pin Configuration (Top View) ........................................................................................... 1-6
1.5
Pin Descriptions ................................................................................................................. 1-8
1.5.1
Description of Each Pin ............................................................................................. 1-8
1.5.2
Pin Configuration..................................................................................................... 1-11
1.5.3
Connections for Unused Pins ................................................................................... 1-12
1.6
Basic Operational Timing ................................................................................................ 1-13
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
(8)
EXPANDED RAM area .......................................................................................... 2-14
2.2.4
Data Memory Access ............................................................................................... 2-15
(1)
Byte operations ........................................................................................................ 2-15
(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