![NEC V854 UPD703006 User Manual Download Page 10](http://html.mh-extra.com/html/nec/v854-upd703006/v854-upd703006_user-manual_249287010.webp)
10
User’s Manual U11969EJ3V0UM00
4.3.2
Bus width ...................................................................................................................................... 84
4.4
Memory Block Function ......................................................................................................... 85
4.5
Wait Function .......................................................................................................................... 86
4.5.1
Programmable wait function ........................................................................................................ 86
4.5.2
External wait function .................................................................................................................. 87
4.5.3
Relations between programmable wait and external wait ......................................................... 87
4.6
Idle State Insertion Function ................................................................................................. 88
4.7
Bus Hold Function .................................................................................................................. 89
4.7.1
Outline of function ........................................................................................................................ 89
4.7.2
Bus hold procedure ...................................................................................................................... 89
4.7.3
Operation in power save mode ................................................................................................... 89
4.8
Bus Timing ............................................................................................................................... 90
4.9
Bus Priority .............................................................................................................................. 97
4.10 Memory Boundary Operation Condition ............................................................................. 97
4.10.1
Program space ............................................................................................................................. 97
4.10.2
Data space ................................................................................................................................... 97
4.11 Internal Peripheral I/O Interface ........................................................................................... 98
CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION ................................................. 99
5.1
Features ................................................................................................................................... 99
5.2
Non-Maskable Interrupt ....................................................................................................... 102
5.2.1
Operation .................................................................................................................................... 103
5.2.2
Restore ....................................................................................................................................... 105
5.2.3
Non-maskable interrupt status flag (NP) .................................................................................. 106
5.2.4
Noise elimination circuit of NMI pin .......................................................................................... 106
5.2.5
Edge detection function of NMI pin ........................................................................................... 106
5.3
Maskable Interrupts .............................................................................................................. 107
5.3.1
Operation .................................................................................................................................... 109
5.3.2
Restore ....................................................................................................................................... 111
5.3.3
Priorities of maskable interrupts ............................................................................................... 112
5.3.4
Interrupt control register (xxICn) ............................................................................................... 116
5.3.5
In-service priority register (ISPR) .............................................................................................. 118
5.3.6
Maskable interrupt status flag (ID) ............................................................................................ 118
5.3.7
Noise elimination ........................................................................................................................ 119
5.3.8
Edge detection function ............................................................................................................. 120
5.3.9
Frequency divider ...................................................................................................................... 124
5.4
Software Exception .............................................................................................................. 126
5.4.1
Operation .................................................................................................................................... 126
5.4.2
Restore ....................................................................................................................................... 127
5.4.3
Exception status flag (EP) ......................................................................................................... 128
5.5
Exception Trap ...................................................................................................................... 129
5.5.1
Illegal op code definition ............................................................................................................ 129
5.5.2
Operation .................................................................................................................................... 129
5.5.3
Restore ....................................................................................................................................... 130
5.6
Multiple interrupt processing .............................................................................................. 131
5.7
Interrupt Response Time ..................................................................................................... 133
Summary of Contents for V854 UPD703006
Page 2: ...2 User s Manual U11969EJ3V0UM00 MEMO ...
Page 22: ...22 User s Manual U11969EJ3V0UM00 MEMO ...
Page 80: ...80 User s Manual U11969EJ3V0UM00 MEMO ...
Page 134: ...134 User s Manual U11969EJ3V0UM00 MEMO ...
Page 156: ...156 User s Manual U11969EJ3V0UM00 MEMO ...
Page 294: ...294 User s Manual U11969EJ3V0UM00 MEMO ...
Page 320: ...320 User s Manual U11969EJ3V0UM00 MEMO ...
Page 324: ...324 User s Manual U11969EJ3V0UM00 MEMO ...
Page 336: ...336 User s Manual U11969EJ3V0UM00 MEMO ...
Page 376: ...376 User s Manual U11969EJ3V0UM00 MEMO ...
Page 382: ...382 User s Manual U11969EJ3V0UM00 MEMO ...
Page 394: ...394 User s Manual U11969EJ3V0UM00 MEMO ...