Table of Contents
Advertisement
CHAPTER 1 INTRODUCTION....................................................................................................................17
1.1
Outline ........................................................................................................................................................ 17
1.2
Application System Example.................................................................................................................... 18
1.3
Features...................................................................................................................................................... 19
1.4
Symbol Diagram ........................................................................................................................................ 21
1.5
Function Blocks......................................................................................................................................... 22
1.5.1
Internal block diagram ...................................................................................................................22
1.5.2
Internal units ..................................................................................................................................23
1.6
Functional Differences Between NU85E and NB85E.............................................................................. 24
CHAPTER 2 PIN FUNCTIONS ...................................................................................................................25
2.1
List of Pin Functions ................................................................................................................................. 25
2.2
Explanation of Pin Functions ................................................................................................................... 29
2.2.1
NPB pins ........................................................................................................................................29
2.2.2
VSB pins ........................................................................................................................................30
2.2.3
System control pins .......................................................................................................................34
2.2.4
DMAC pins.....................................................................................................................................36
2.2.5
INTC pins .......................................................................................................................................36
2.2.6
VFB pins ........................................................................................................................................36
2.2.7
VDB pins........................................................................................................................................37
2.2.8
Instruction cache pins ....................................................................................................................38
2.2.9
Data cache pins .............................................................................................................................39
2.2.10
RCU pins .......................................................................................................................................41
2.2.11
Peripheral evaluation chip mode pins............................................................................................41
2.2.12
Operation mode setting pins..........................................................................................................42
2.2.13
Test mode pins ..............................................................................................................................44
2.3
Recommended Connection of Unused Pins ........................................................................................... 46
2.4
Pin Status ................................................................................................................................................... 48
CHAPTER 3 CPU........................................................................................................................................51
3.1
Features...................................................................................................................................................... 51
3.2
Registers .................................................................................................................................................... 52
3.2.1
Program registers ..........................................................................................................................53
3.2.2
System registers ............................................................................................................................55
3.3
Address Space........................................................................................................................................... 58
3.3.1
Program area .................................................................................................................................59
3.3.2
Data area .......................................................................................................................................60
3.4
Areas........................................................................................................................................................... 62
3.4.1
ROM area ......................................................................................................................................62
3.4.2
RAM area.......................................................................................................................................64
3.4.3
Peripheral I/O area ........................................................................................................................65
3.4.4
External memory area....................................................................................................................67
3.5
Peripheral I/O Registers ............................................................................................................................ 67
3.5.1
NU85E control registers.................................................................................................................68
CONTENTS
Preliminary User's Manual A14874EJ3V0UM
9
Advertisement
Table of Contents
