7702 datasheet(8/217 Pages) RENESAS

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Table of Contents

7702/7703 Group User’s Manual

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

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4.10 External interrupts (INTi interrupt) ................................................................................ 4-20

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4.10.1 Function of INTi interrupt request bit ...................................................................... 4-23

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4.10.2 Switch of occurrence factor of INTi interrupt request ........................................... 4-25

4.11 Precautions when using interrupts ............................................................................... 4-26

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

CHAPTER 6. TIMER B

6.1 Overview ..................................................................................................................................6-2

6.2 Block description .................................................................................................................. 6-2

6.2.1 Counter and reload register (timer Bi register) ......................................................... 6-3

6.2.2 Count start register ........................................................................................................ 6-4

6.2.3 Timer Bi mode register ................................................................................................. 6-5

6.2.4 Timer Bi interrupt control register ............................................................................... 6-6

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