Datasheet

Rev.5.00 Nov. 02, 2005 Page x of xxviii
3.2.5 Wakeup Interrupt Flag Register (IWPR)................................................................ 55
3.3 Reset Exception Handling.................................................................................................... 56
3.4 Interrupt Exception Handling .............................................................................................. 57
3.4.1 External Interrupts .................................................................................................. 57
3.4.2 Internal Interrupts ................................................................................................... 58
3.4.3 Interrupt Handling Sequence .................................................................................. 58
3.4.4 Interrupt Response Time......................................................................................... 60
3.5 Usage Notes......................................................................................................................... 62
3.5.1 Interrupts after Reset............................................................................................... 62
3.5.2 Notes on Stack Area Use ........................................................................................ 62
3.5.3 Notes on Rewriting Port Mode Registers ............................................................... 62
Section 4 Address Break .....................................................................................63
4.1 Register Descriptions...........................................................................................................63
4.1.1 Address Break Control Register (ABRKCR) ......................................................... 64
4.1.2 Address Break Status Register (ABRKSR) ............................................................ 65
4.1.3 Break Address Registers (BARH, BARL).............................................................. 66
4.1.4 Break Data Registers (BDRH, BDRL) ................................................................... 66
4.2 Operation ............................................................................................................................. 66
Section 5 Clock Pulse Generators .......................................................................69
5.1 System Clock Generator ...................................................................................................... 70
5.1.1 Connecting Crystal Resonator ................................................................................ 70
5.1.2 Connecting Ceramic Resonator .............................................................................. 71
5.1.3 External Clock Input Method ................................................................................. 71
5.2 Subclock Generator..............................................................................................................72
5.2.1 Connecting 32.768-kHz Crystal Resonator ............................................................ 72
5.2.2 Pin Connection when Not Using Subclock............................................................. 73
5.3 Prescalers............................................................................................................................. 73
5.3.1 Prescaler S .............................................................................................................. 73
5.3.2 Prescaler W............................................................................................................. 73
5.4 Usage Notes......................................................................................................................... 74
5.4.1 Note on Resonators................................................................................................. 74
5.4.2 Notes on Board Design........................................................................................... 74
Section 6 Power-Down Modes............................................................................75
6.1 Register Descriptions...........................................................................................................75
6.1.1 System Control Register 1 (SYSCR1).................................................................... 76
6.1.2 System Control Register 2 (SYSCR2).................................................................... 78
6.1.3 Module Standby Control Register 1 (MSTCR1) .................................................... 79