Rev. 5.00, 12/03, page xv of xxx
Section 4 Exception Handling
.........................................................................................
99
4.1
Overview...........................................................................................................................
99
4.1.1
Exception Handling Types and Priority...............................................................
99
4.1.2
Exception Handling Operation.............................................................................
99
4.1.3
Exception Vector Table ....................................................................................... 100
4.2
Reset ................................................................................................................................. 102
4.2.1
Overview.............................................................................................................. 102
4.2.2
Reset Sequence .................................................................................................... 102
4.2.3
Interrupts after Reset............................................................................................ 103
4.2.4
State of On-Chip Supporting Modules after Reset Release ................................. 103
4.3
Traces................................................................................................................................ 104
4.4
Interrupts ........................................................................................................................... 105
4.5
Trap Instruction................................................................................................................. 106
4.6
Stack Status after Exception Handling.............................................................................. 106
4.7
Notes on Use of the Stack ................................................................................................. 107
Section 5 Interrupt Controller
.......................................................................................... 109
5.1
Overview........................................................................................................................... 109
5.1.1
Features................................................................................................................ 109
5.1.2
Block Diagram..................................................................................................... 110
5.1.3
Pin Configuration................................................................................................. 111
5.1.4
Register Configuration......................................................................................... 111
5.2
Register Descriptions ........................................................................................................ 112
5.2.1
System Control Register (SYSCR) ...................................................................... 112
5.2.2
Interrupt Priority Registers A to K (IPRA to IPRK) ............................................ 113
5.2.3
IRQ Enable Register (IER) .................................................................................. 114
5.2.4
IRQ Sense Control Registers H and L (ISCRH, ISCRL)..................................... 115
5.2.5
IRQ Status Register (ISR).................................................................................... 116
5.3
Interrupt Sources ............................................................................................................... 117
5.3.1
External Interrupts ............................................................................................... 117
5.3.2
Internal Interrupts................................................................................................. 118
5.3.3
Interrupt Exception Vector Table ........................................................................ 118
5.4
Interrupt Operation............................................................................................................ 124
5.4.1
Interrupt Control Modes and Interrupt Operation ................................................ 124
5.4.2
Interrupt Control Mode 0 ..................................................................................... 127
5.4.3
Interrupt Control Mode 2 ..................................................................................... 129
5.4.4
Interrupt Exception Handling Sequence .............................................................. 131
5.4.5
Interrupt Response Times .................................................................................... 133
5.5
Usage Notes ...................................................................................................................... 134
5.5.1
Contention between Interrupt Generation and Disabling..................................... 134
5.5.2
Instructions that Disable Interrupts ...................................................................... 135
5.5.3
Times when Interrupts are Disabled .................................................................... 135
5.5.4
Interrupts during Execution of EEPMOV Instruction.......................................... 135
Содержание H8S/2318 series
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