
10
4.3.2 Bus width.....................................................................................................................................
Memory Block Function.......................................................................................................................
Wait Function........................................................................................................................................
4.5.1 Programmable wait function........................................................................................................
4.5.2 External wait function..................................................................................................................
4.5.3 Relations between programmable wait and external wait...........................................................
Idle State Insertion Function...............................................................................................................
Bus Hold Function................................................................................................................................
4.7.1 Outline of function .......................................................................................................................
4.7.2 Bus hold procedure.....................................................................................................................
4.7.3 Operation in power save mode ...................................................................................................
Bus Timing............................................................................................................................................
Bus Priority...........................................................................................................................................
4.10 Memory Boundary Operation Condition ............................................................................................
4.10.1 Program space..........................................................................................................................
4.10.2 Data space................................................................................................................................
85
86
87
87
88
88
89
90
90
91
91
92
99
99
99
99
4.4
4.5
4.6
4.7
4.8
4.9
CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION................................................. 101
5.1
5.2
Features ................................................................................................................................................ 101
Non-Maskable Interrupt ....................................................................................................................... 104
5.2.1 Accepting operation..................................................................................................................... 105
5.2.2 Restore........................................................................................................................................ 107
5.2.3 NP flag......................................................................................................................................... 108
5.2.4 Noise elimination circuit of NMI pin ............................................................................................. 108
5.2.5 Edge detection function of NMI pin ............................................................................................. 109
Maskable Interrupts.............................................................................................................................. 110
5.3.1 Operation..................................................................................................................................... 110
5.3.2 Restore........................................................................................................................................ 112
5.3.3 Priorities of maskable interrupts.................................................................................................. 113
5.3.4 Interrupt control register (xxICn).................................................................................................. 117
5.3.5 In-service priority register (ISPR) ................................................................................................ 119
5.3.6 Maskable interrupt status flag ..................................................................................................... 119
5.3.7 Watchdog timer mode register (WDTM)...................................................................................... 120
5.3.8 Noise elimination......................................................................................................................... 120
5.3.9 Edge detection function............................................................................................................... 121
Software Exception.............................................................................................................................. 122
5.4.1 Operation..................................................................................................................................... 122
5.4.2 Restore........................................................................................................................................ 123
5.4.3 EP flag......................................................................................................................................... 124
Exception Trap ..................................................................................................................................... 124
5.5.1 Illegal op code definition.............................................................................................................. 124
5.5.2 Operation..................................................................................................................................... 124
5.5.3 Restore........................................................................................................................................ 125
Priority Control..................................................................................................................................... 127
5.6.1 Priorities of interrupts and exceptions......................................................................................... 127
5.6.2 Multiple interrupt processing ....................................................................................................... 127
Interrupt Latency Time......................................................................................................................... 130
5.3
5.4
5.5
5.6
5.7