
User’s Manual U12768EJ4V1UD
11
CONTENTS
CHAPTER 1 INTRODUCTION .................................................................................................................27
1.1
General ......................................................................................................................................27
1.2
Features.....................................................................................................................................28
1.3
Applications ..............................................................................................................................30
1.4
Ordering Information ...............................................................................................................30
1.5
Pin Configuration .....................................................................................................................31
1.6
Function Blocks .......................................................................................................................34
1.6.1
Internal block diagram ................................................................................................................. 34
1.6.2
Internal units................................................................................................................................ 35
CHAPTER 2 PIN FUNCTIONS ................................................................................................................38
2.1
List of Pin Functions................................................................................................................38
2.2
Pin States ..................................................................................................................................43
2.3
Description of Pin Functions ..................................................................................................44
2.4
Pin I/O Circuits and Recommended Connection of Unused Pins .......................................55
2.5
Pin I/O Circuits..........................................................................................................................57
CHAPTER 3 CPU FUNCTIONS ..............................................................................................................59
3.1
Features.....................................................................................................................................59
3.2
CPU Register Set......................................................................................................................60
3.2.1
Program register set.................................................................................................................... 61
3.2.2
System register set ..................................................................................................................... 62
3.3
Operation Modes ......................................................................................................................65
3.4
Address Space .........................................................................................................................66
3.4.1
CPU address space .................................................................................................................... 66
3.4.2
Image .......................................................................................................................................... 67
3.4.3
Wraparound of CPU address space............................................................................................ 68
3.4.4
Memory map ............................................................................................................................... 69
3.4.5
Area ............................................................................................................................................ 70
3.4.6
External expansion mode............................................................................................................ 77
3.4.7
Recommended use of address space ......................................................................................... 79
3.4.8
Peripheral I/O registers ............................................................................................................... 81
3.4.9
Specific registers ......................................................................................................................... 86
CHAPTER 4 BUS CONTROL FUNCTION.............................................................................................89
4.1
Features.....................................................................................................................................89
4.2
Bus Control Pins and Control Register .................................................................................89
4.2.1
Bus control pins........................................................................................................................... 89
4.2.2
Control register............................................................................................................................ 90
4.3 Bus Access ..................................................................................................................................90
4.3.1
Number of access clocks ............................................................................................................ 90
4.3.2
Bus width..................................................................................................................................... 91