Renesas H8/3847R Series Hardware Manual page 15

Section 5 Power-Down Modes
5.1 Overview........................................................................................................................... 131
5.1.1 System Control Registers..................................................................................... 134
5.2 Sleep Mode ....................................................................................................................... 138
5.2.1 Transition to Sleep Mode..................................................................................... 138
5.2.2 Clearing Sleep Mode............................................................................................ 139
5.2.3 Clock Frequency in Sleep (Medium-Speed) Mode.............................................. 139
5.3 Standby Mode ................................................................................................................... 140
5.3.1 Transition to Standby Mode................................................................................. 140
5.3.2 Clearing Standby Mode ....................................................................................... 140
5.3.3 Oscillator Settling Time after Standby Mode is Cleared ..................................... 140
5.3.4 Standby Mode Transition and Pin States ............................................................. 141
5.3.5 Notes on External Input Signal Changes before/after Standby Mode.................. 142
5.4 Watch Mode...................................................................................................................... 144
5.4.1 Transition to Watch Mode ................................................................................... 144
5.4.2 Clearing Watch Mode .......................................................................................... 144
5.4.3 Oscillator Settling Time after Watch Mode is Cleared ........................................ 144
5.4.4 Notes on External Input Signal Changes before/after Watch Mode .................... 144
5.5 Subsleep Mode.................................................................................................................. 145
5.5.1 Transition to Subsleep Mode ............................................................................... 145
5.5.2 Clearing Subsleep Mode ...................................................................................... 145
5.6 Subactive Mode ................................................................................................................ 146
5.6.1 Transition to Subactive Mode .............................................................................. 146
5.6.2 Clearing Subactive Mode..................................................................................... 146
5.6.3 Operating Frequency in Subactive Mode............................................................. 146
5.7 Active (Medium-Speed) Mode ......................................................................................... 147
5.7.1 Transition to Active (Medium-Speed) Mode ....................................................... 147
5.7.2 Clearing Active (Medium-Speed) Mode.............................................................. 147
5.7.3 Operating Frequency in Active (Medium-Speed) Mode...................................... 147
5.8 Direct Transfer .................................................................................................................. 148
5.8.1 Overview of Direct Transfer ................................................................................ 148
5.8.2 Direct Transition Times ....................................................................................... 149
5.8.3 Notes on External Input Signal Changes before/after Direct Transition.............. 151
5.9 Module Standby Mode...................................................................................................... 152
5.9.1 Setting Module Standby Mode ............................................................................ 152
5.9.2 Clearing Module Standby Mode .......................................................................... 152
5.9.3 Usage Note........................................................................................................... 154
Section 6 ROM
..................................................................................................................... 155
6.1 Overview........................................................................................................................... 155
........................................................................................ 131
Rev. 6.00 Aug 04, 2006 page xiii of xxxvi