Datasheet

Rev. 8.00 Mar. 09, 2010 Page xi of xx
REJ09B0042-0800
4.6 Notes on H8/38124 Group .................................................................................................119
Section 5 Power-Down Modes ..........................................................................121
5.1 Overview............................................................................................................................121
5.1.1 System Control Registers...................................................................................... 124
5.2 Sleep Mode ........................................................................................................................ 128
5.2.1 Transition to Sleep Mode......................................................................................128
5.2.2 Clearing Sleep Mode............................................................................................. 129
5.2.3 Clock Frequency in Sleep (Medium-Speed) Mode............................................... 129
5.3 Standby Mode....................................................................................................................130
5.3.1 Transition to Standby Mode..................................................................................130
5.3.2 Clearing Standby Mode ........................................................................................130
5.3.3 Oscillator Stabilization Time after Standby Mode Is Cleared...............................130
5.3.4 Standby Mode Transition and Pin States .............................................................. 132
5.3.5 Notes on External Input Signal Changes before/after Standby Mode...................133
5.4 Watch Mode.......................................................................................................................134
5.4.1 Transition to Watch Mode .................................................................................... 134
5.4.2 Clearing Watch Mode...........................................................................................135
5.4.3 Oscillator StabilizationTime after Watch Mode Is Cleared.................................. 135
5.4.4 Notes on External Input Signal Changes before/after Watch Mode .....................135
5.5 Subsleep Mode................................................................................................................... 136
5.5.1 Transition to Subsleep Mode ................................................................................ 136
5.5.2 Clearing Subsleep Mode.......................................................................................136
5.6 Subactive Mode ................................................................................................................. 137
5.6.1 Transition to Subactive Mode............................................................................... 137
5.6.2 Clearing Subactive Mode...................................................................................... 137
5.6.3 Operating Frequency in Subactive Mode.............................................................. 137
5.7 Active (Medium-Speed) Mode ..........................................................................................138
5.7.1 Transition to Active (Medium-Speed) Mode........................................................ 138
5.7.2 Clearing Active (Medium-Speed) Mode............................................................... 138
5.7.3 Operating Frequency in Active (Medium-Speed) Mode.......................................138
5.8 Direct Transfer...................................................................................................................139
5.8.1 Overview of Direct Transfer.................................................................................139
5.8.2 Direct Transition Times........................................................................................ 140
5.8.3 Notes on External Input Signal Changes before/after Direct Transition...............142
5.9 Module Standby Mode.......................................................................................................143
5.9.1 Setting Module Standby Mode .............................................................................143
5.9.2 Clearing Module Standby Mode...........................................................................143
5.10 Usage Note.........................................................................................................................144
5.10.1 Contention Between Module Standby and Interrupts ........................................... 144