HD64F38024HV Datasheet, PDF (13/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

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
Rev. 8.00 Mar. 09, 2010 Page xi of xx
REJ09B0042-0800