iii
4.1.3
Exception Vector Table........................................................................................
86
4.2 Reset ..................................................................................................................................
88
4.2.1 Overview ..............................................................................................................
88
4.2.2 Reset
Sequence .....................................................................................................
88
4.2.3
Interrupts after Reset ............................................................................................
91
4.3 Interrupts............................................................................................................................
92
4.4 Trap
Instruction .................................................................................................................
92
4.5
Stack Status after Exception Handling ..............................................................................
93
4.6
Notes on Stack Usage ........................................................................................................
94
Section 5
Interrupt Controller
........................................................................................
97
5.1 Overview............................................................................................................................
97
5.1.1 Features ................................................................................................................
97
5.1.2 Block
Diagram......................................................................................................
98
5.1.3 Pin
Configuration .................................................................................................
99
5.1.4 Register
Configuration .........................................................................................
99
5.2 Register
Descriptions.........................................................................................................
99
5.2.1
System Control Register (SYSCR) ......................................................................
99
5.2.2
Interrupt Priority Registers A and B (IPRA, IPRB) ............................................. 100
5.2.3
IRQ Status Register (ISR) .................................................................................... 105
5.2.4
IRQ Enable Register (IER) .................................................................................. 106
5.2.5
IRQ Sense Control Register (ISCR)..................................................................... 107
5.3 Interrupt
Sources................................................................................................................ 108
5.3.1 External
Interrupts................................................................................................ 108
5.3.2 Internal
Interrupts ................................................................................................. 109
5.3.3
Interrupt Exception Handling Vector Table ......................................................... 109
5.4 Interrupt
Operation ............................................................................................................ 113
5.4.1
Interrupt Handling Process ................................................................................... 113
5.4.2
Interrupt Exception Handling Sequence .............................................................. 118
5.4.3
Interrupt Response Time ...................................................................................... 119
5.5 Usage
Notes ....................................................................................................................... 120
5.5.1
Contention between Interrupt and Interrupt-Disabling Instruction...................... 120
5.5.2
Instructions that Inhibit Interrupts........................................................................ 121
5.5.3
Interrupts during EEPMOV Instruction Execution .............................................. 121
Section 6
Bus Controller
.................................................................................................. 123
6.1 Overview............................................................................................................................ 123
6.1.1 Features ................................................................................................................ 123
6.1.2 Block
Diagram...................................................................................................... 124
6.1.3 Pin
Configuration ................................................................................................. 125
6.1.4 Register
Configuration ......................................................................................... 126
6.2 Register
Descriptions......................................................................................................... 126
6.2.1
Bus Width Control Register (ABWCR) ............................................................... 126
Содержание H8/3060
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