
User’s Manual U12768EJ4V1UD
18
LIST OF FIGURES (1/6)
Figure No.
Title
Page
3-1
CPU Register Set ............................................................................................................................................60
3-2
CPU Address Space........................................................................................................................................66
3-3
Image on Address Space ................................................................................................................................67
3-4
Program Space................................................................................................................................................68
3-5
Data Space ......................................................................................................................................................68
3-6
Memory Map....................................................................................................................................................69
3-7
Internal ROM Area (64 KB)..............................................................................................................................70
3-8
Internal ROM Area (128 KB)............................................................................................................................70
3-9
Internal ROM/Internal Flash Memory Area (256 KB) .......................................................................................71
3-10
Internal RAM Area (4 KB) ................................................................................................................................73
3-11
Internal RAM Area (8 KB) ................................................................................................................................73
3-12
On-Chip Peripheral I/O Area............................................................................................................................74
3-13
External Memory Area (When Expanded to 64 KB, 256 KB, or 1 MB) ............................................................75
3-14
External Memory Area (When Expanded to 4 MB) ..........................................................................................76
3-15
Application Example of Wraparound................................................................................................................79
3-16
Recommended Memory Map...........................................................................................................................80
4-1
Byte Access (8 Bits).........................................................................................................................................91
4-2
Halfword Access (16 Bits)................................................................................................................................91
4-3
Word Access (32 Bits) .....................................................................................................................................91
4-4
Memory Space.................................................................................................................................................92
4-5
Wait Control .....................................................................................................................................................94
4-6
Example of Inserting Wait States.....................................................................................................................94
4-7
Bus Hold Procedure.........................................................................................................................................97
4-8
Memory Read .................................................................................................................................................98
4-9
Memory Write ...............................................................................................................................................102
4-10
Bus Hold Timing ............................................................................................................................................104
5-1
Non-Maskable Interrupt Servicing..................................................................................................................110
5-2
Acknowledging Non-Maskable Interrupt Request ..........................................................................................111
5-3
RETI Instruction Processing ..........................................................................................................................112
5-4
NP Flag (NP) .................................................................................................................................................113
5-5
Maskable Interrupt Servicing .........................................................................................................................116
5-6
RETI Instruction Processing ..........................................................................................................................117
5-7
Example of Multiple Interrupt Servicing ........................................................................................................119
5-8
Example of Servicing Interrupt Requests Generated Simultaneously............................................................121
5-9
Interrupt Disable Flag (ID) .............................................................................................................................126
5-10
Software Exception Processing .....................................................................................................................127
5-11
RETI Instruction Processing ..........................................................................................................................128
5-12
EP Flag (EP)..................................................................................................................................................129