Renesas 7700 FAMILY User Manual page 5

Table of Contents
CHAPTER 4. INTERRUPTS
4.1 Overview ..................................................................................................................................4-2
4.2 Interrupt sources ................................................................................................................... 4-4
4.3 Interrupt control .................................................................................................................... 4-6
4.3.1 Interrupt disable flag (I) ................................................................................................ 4-8
4.3.2 Interrupt request bit ....................................................................................................... 4-8
4.3.3 Interrupt priority level select bits and processor interrupt priority level (IPL) ....... 4-8
4.4 Interrupt priority level ........................................................................................................ 4-10
4.5 Interrupt priority level detection circuit ........................................................................ 4-11
4.6 Interrupt priority level detection time ............................................................................ 4-13
4.7 Sequence from acceptance of interrupt request to execution of interrupt routine ........................... 4-14
4.7.1 Change in IPL at acceptance of interrupt request .................................................. 4-16
4.7.2 Storing registers ........................................................................................................... 4-17
4.8 Return from interrupt routine........................................................................................... 4-18
4.9 Multiple interrupts ............................................................................................................... 4-18
4.10 External interrupts (INT
4.10.1 Function of INT
4.10.2 Switch of occurrence factor of INT
CHAPTER 5. TIMER A
5.1 Overview ..................................................................................................................................5-2
5.2 Block description .................................................................................................................. 5-3
5.2.1 Counter and reload register (timer Ai register) ......................................................... 5-4
5.2.2 Count start register........................................................................................................ 5-5
5.2.3 Timer Ai mode register ................................................................................................. 5-6
5.2.4 Timer Ai interrupt control register ............................................................................... 5-7
5.2.5 Port P5 and port P6 direction registers ..................................................................... 5-8
5.3 Timer mode ............................................................................................................................ 5-9
5.3.1 Setting for timer mode ................................................................................................ 5-11
5.3.2 Count source ................................................................................................................ 5-13
5.3.3 Operation in timer mode ............................................................................................. 5-14
5.3.4 Select function ............................................................................................................. 5-15
5.4 Event counter mode ........................................................................................................... 5-19
5.4.1 Setting for event counter mode ................................................................................. 5-22
5.4.2 Operation in event counter mode .............................................................................. 5-24
5.4.3 Select functions ............................................................................................................ 5-26
5.5 One-shot pulse mode ......................................................................................................... 5-30
5.5.1 Setting for one-shot pulse mode ............................................................................... 5-32
5.5.2 Count source ................................................................................................................ 5-34
5.5.3 Trigger ........................................................................................................................... 5-35
5.5.4 Operation in one-shot pulse mode ............................................................................ 5-36
5.6 Pulse width modulation (PWM) mode ............................................................................ 5-39
5.6.1 Setting for PWM mode ............................................................................................... 5-41
5.6.2 Count source ................................................................................................................ 5-43
5.6.3 Trigger ........................................................................................................................... 5-43
5.6.4 Operation in PWM mode ............................................................................................ 5-44
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interrupt) ................................................................................ 4-20
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interrupt request bit ...................................................................... 4-23
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7751 Group User's Manual
interrupt request ........................................... 4-25
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