v
8.4.2
Canceling Standby Mode ...................................................................................... 193
8.4.3
Clock Pause Function............................................................................................ 194
8.5
Module Standby Function .................................................................................................. 195
8.5.1
Transition to Module Standby Function................................................................ 195
8.5.2
Clearing Module Standby Function ...................................................................... 195
8.6
Timing of STATUS Pin Changes....................................................................................... 196
8.6.1
Timing for Resets.................................................................................................. 196
8.6.2
Timing for Canceling Standby .............................................................................. 198
8.6.3
Timing for Canceling Sleep Mode........................................................................ 200
8.7
Hardware Standby Mode.................................................................................................... 203
8.7.1
Transition to Hardware Standby Mode ................................................................. 203
8.7.2
Canceling Hardware Standby Mode...................................................................... 204
8.7.3
Hardware Standby Mode Timing.......................................................................... 204
Section 9
On-Chip Oscillation Circuits
....................................................................... 207
9.1
Overview ............................................................................................................................ 207
9.1.1
Features ................................................................................................................. 207
9.2
Overview of CPG ............................................................................................................... 208
9.2.1
CPG Block Diagram.............................................................................................. 208
9.2.2
CPG Pin Configuration ......................................................................................... 210
9.2.3
CPG Register Configuration ................................................................................. 210
9.3
Clock Operating Modes...................................................................................................... 211
9.4
Register Descriptions.......................................................................................................... 215
9.4.1
Frequency Control Register (FRQCR).................................................................. 215
9.5
Changing the Frequency..................................................................................................... 217
9.5.1
Changing the Multiplication Rate ......................................................................... 217
9.5.2
Changing the Division Ratio ................................................................................. 217
9.6
Overview of WDT.............................................................................................................. 218
9.6.1
Block Diagram of WDT........................................................................................ 218
9.6.2
Register Configuration .......................................................................................... 218
9.7
WDTRegisters .................................................................................................................... 219
9.7.1
Watchdog Timer Counter (WTCNT).................................................................... 219
9.7.2
Watchdog Timer Control/Status Register (WTCSR)............................................ 219
9.7.3
Notes on Register Access...................................................................................... 221
9.8
Using the WDT .................................................................................................................. 222
9.8.1
Canceling Standby ................................................................................................ 222
9.8.2
Changing the Frequency........................................................................................ 222
9.8.3
Using Watchdog Timer Mode............................................................................... 223
9.8.4
Using Interval Timer Mode................................................................................... 223
9.9
Notes on Board Design ...................................................................................................... 224
Section 10 Bus State Controller (BSC)
.......................................................................... 227
10.1
Overview ............................................................................................................................ 227
Содержание SH7709S
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