SH7708 Datasheet, PDF (12/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

7.1.4 Break Conditions and Register Settings ............................................................... 125
7.2 UBC Register Functions.................................................................................................... 126
7.2.1 Break Address Register A (BARA) ..................................................................... 126
7.2.2 Break Address Register B (BARB)...................................................................... 126
7.2.3 Break ASID Register A (BASRA) ....................................................................... 127
7.2.4 Break ASID Register B (BASRB) ....................................................................... 127
7.2.5 Break Address Mask Register A (BAMRA)........................................................ 127
7.2.6 Break Address Mask Register B (BAMRB) ........................................................ 128
7.2.7 Break Bus Cycle Register A (BBRA) .................................................................. 128
7.2.8 Break Bus Cycle Register B (BBRB) .................................................................. 129
7.2.9 Break Data Register B (BDRB) ........................................................................... 130
7.2.10 Break Data Mask Register B (BDMRB).............................................................. 131
7.2.11 Break Control Register (BRCR) .......................................................................... 132
7.3 UBC Operation.................................................................................................................. 134
7.3.1 User Break Operation Flow.................................................................................. 134
7.3.2 Instruction Fetch Cycle Break.............................................................................. 135
7.3.3 Data Access Cycle Break ..................................................................................... 136
7.3.4 Saved Program Counter (PC) Value .................................................................... 137
7.3.5 Examples of Use................................................................................................... 138
7.3.6 Cautions................................................................................................................ 140
Section 8 Power-Down Modes ........................................................................................ 141
8.1 Overview............................................................................................................................ 141
8.1.1 Power-Down Modes............................................................................................. 141
8.1.2 Register Configuration ......................................................................................... 142
8.1.3 Pin Configuration ................................................................................................. 143
8.2 Register Description .......................................................................................................... 143
8.2.1 Standby Control Register (STBCR) ..................................................................... 143
8.3 Sleep Mode........................................................................................................................ 145
8.3.1 Transition to Sleep Mode ..................................................................................... 145
8.3.2 Canceling Sleep Mode.......................................................................................... 145
8.4 Standby Mode.................................................................................................................... 145
8.4.1 Transition to Standby Mode ................................................................................. 145
8.4.2 Canceling Standby Mode ..................................................................................... 146
8.4.3 Clock Pause Function........................................................................................... 147
8.5 Module Standby Function.................................................................................................. 147
8.5.1 Transition to Module Standby Function............................................................... 147
8.5.2 Clearing the Module Standby Function................................................................ 148
8.6 Timing of STATUS Pin Changes...................................................................................... 148
8.6.1 Timing for Resets ................................................................................................. 148
8.6.2 Timing for Canceling Standbys............................................................................ 150
8.6.3 Timing for Canceling Sleep Mode ....................................................................... 151
8.7 Hardware Standby Mode ................................................................................................... 153
iv