SH7619_09 Datasheet, PDF (14/860 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

7.5.4
7.5.5
7.5.6
7.5.7
7.5.8
7.5.9
Extension of Chip Select (CSn) Assertion Period............................................. 156
SDRAM Interface ............................................................................................. 157
Byte-Selection SRAM Interface ....................................................................... 186
PCMCIA Interface............................................................................................ 191
Wait between Access Cycles ............................................................................ 198
Others................................................................................................................ 198
Section 8 Clock Pulse Generator (CPG) ........................................................... 201
8.1 Features............................................................................................................................. 201
8.2 Input/Output Pins.............................................................................................................. 204
8.3 Clock Operating Modes .................................................................................................... 204
8.4 Register Descriptions........................................................................................................ 206
8.4.1 Frequency Control Register (FRQCR) ............................................................. 206
8.4.2 PHY Clock Frequency Control Register (MCLKCR) ...................................... 208
8.4.3 Usage Notes ...................................................................................................... 209
8.5 Changing Frequency ......................................................................................................... 210
8.5.1 Changing Multiplication Ratio ......................................................................... 210
8.5.2 Changing Division Ratio .................................................................................. 211
8.5.3 Changing Clock Operating Mode ..................................................................... 211
8.6 Notes on Board Design ..................................................................................................... 213
Section 9 Watchdog Timer (WDT) ................................................................... 215
9.1 Features............................................................................................................................. 215
9.2 Register Descriptions........................................................................................................ 217
9.2.1 Watchdog Timer Counter (WTCNT)................................................................ 217
9.2.2 Watchdog Timer Control/Status Register (WTCSR)........................................ 217
9.2.3 Notes on Register Access ................................................................................. 219
9.3 WDT Operation ................................................................................................................ 220
9.3.1 Canceling Software Standbys ........................................................................... 220
9.3.2 Changing Frequency ......................................................................................... 221
9.3.3 Using Watchdog Timer Mode .......................................................................... 221
9.3.4 Using Interval Timer Mode .............................................................................. 222
9.4 Usage Notes ...................................................................................................................... 222
Section 10 Power-Down Modes........................................................................ 223
10.1 Features............................................................................................................................. 223
10.1.1 Types of Power-Down Modes .......................................................................... 223
10.2 Input/Output Pins.............................................................................................................. 224
10.3 Register Descriptions........................................................................................................ 224
10.3.1 Standby Control Register (STBCR).................................................................. 225
Rev. 6.00 Jul. 15, 2009 Page xii of xxxviii