H83802 datasheet(32/555 Pages) RENESAS

32 / 555 page

Rev. 6.00 Mar 15, 2005 page xxxii of l

Section 3 Exception Handling ......................................................................................... 73

3.1

Exception Sources and Vector Address ............................................................................

3.2

Register Descriptions........................................................................................................77

3.2.1

Interrupt Edge Select Register (IEGR) ................................................................

3.2.2

Interrupt Enable Register 1 (IENR1) ...................................................................

3.2.3

Interrupt Enable Register 2 (IENR2) ...................................................................

3.2.4

Interrupt Request Register 1 (IRR1) ....................................................................

3.2.5

Interrupt Request Register 2 (IRR2) ....................................................................

3.2.6

Wakeup Interrupt Request Register (IWPR) .......................................................

3.2.7

Wakeup Edge Select Register (WEGR) ..............................................................

3.3

Reset Exception Handling.................................................................................................

3.4

Interrupt Exception Handling ...........................................................................................

3.4.1

External Interrupts ...............................................................................................

3.4.2

Internal Interrupts ................................................................................................

3.4.3

Interrupt Handling Sequence ...............................................................................

3.4.4

Interrupt Response Time......................................................................................

3.5

Usage Notes ......................................................................................................................

3.5.1

Interrupts after Reset............................................................................................

3.5.2

Notes on Stack Area Use .....................................................................................

3.5.3

Interrupt Request Flag Clearing Method .............................................................

3.5.4

Notes on Rewriting Port Mode Registers ............................................................

Section 4 Clock Pulse Generators................................................................................... 93

4.1

Features.............................................................................................................................

4.2

Register Description .........................................................................................................95

4.3

System Clock Generator ...................................................................................................

4.3.1

Connecting Crystal Resonator .............................................................................

4.3.2

Connecting Ceramic Resonator ...........................................................................

4.3.3

External Clock Input Method ..............................................................................

4.3.4

On-Chip Oscillator Selection Method (H8/38104 Group Only) ..........................

4.4

Subclock Generator .......................................................................................................... 100

4.4.1

Connecting 32.768-kHz/38.4-kHz Crystal Resonator ......................................... 100

4.4.2

Pin Connection when Not Using Subclock.......................................................... 101

4.4.3

External Clock Input............................................................................................ 101

4.5

Prescalers .......................................................................................................................... 102

4.5.1

Prescaler S ........................................................................................................... 102

4.5.2

Prescaler W.......................................................................................................... 102

4.6

Usage Notes ...................................................................................................................... 102

4.6.1

Note on Resonators.............................................................................................. 102

4.6.2

Notes on Board Design ........................................................................................ 104

4.6.3

Definition of Oscillation Stabilization Standby Time.......................................... 105

4.6.4

Notes on Use of Resonator .................................................................................. 107

H83802 Datasheet(PDF) 32 Page - Renesas Technology Corp

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