HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 14

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

11.6 Notes on Board Design ..................................................................................................... 344
Section 12 Watchdog Timer (WDT) ................................................................. 347
12.1 Features............................................................................................................................. 347
12.2 Register Descriptions........................................................................................................ 349
12.3 Operation .......................................................................................................................... 352
Section 13 Power-Down Modes........................................................................ 355
13.1 Features............................................................................................................................. 355
13.2 Register Descriptions........................................................................................................ 359
13.3 Operation .......................................................................................................................... 366
13.4 Usage note ........................................................................................................................ 370
Section 14 Timer Unit (TMU)........................................................................... 371
14.1 Features............................................................................................................................. 371
14.2 Register Descriptions........................................................................................................ 373
14.3 Operation .......................................................................................................................... 377
Rev. 1.00, 02/04, page xiv of xxxviii
12.2.1 Watchdog Timer Counter (WTCNT)................................................................... 349
12.2.2 Watchdog Timer Control/Status Register (WTCSR)........................................... 349
12.2.3 Notes on Register Access .................................................................................... 351
12.3.1 Canceling Software Standby................................................................................ 352
12.3.2 Changing the Frequency ...................................................................................... 352
12.3.3 Using Watchdog Timer Mode ............................................................................. 353
12.3.4 Using Interval Timer Mode ................................................................................. 353
13.1.1 Power-Down Modes ............................................................................................ 355
13.1.2 Reset .................................................................................................................... 357
13.1.3 Input/Output Pins................................................................................................. 358
13.2.1 Standby Control Register (STBCR)..................................................................... 360
13.2.2 Standby Control Register 2 (STBCR2)................................................................ 361
13.2.3 Standby Control Register 3 (STBCR3)................................................................ 362
13.2.4 Standby Control Register 4 (STBCR4)................................................................ 363
13.2.5 Memory Clock Control Register (MCCR)........................................................... 365
13.3.1 Sleep Mode .......................................................................................................... 366
13.3.2 Software Standby Mode....................................................................................... 366
13.3.3 Module Standby Function.................................................................................... 368
13.3.4 State Transitions between Modes ........................................................................ 369
13.3.5 Method of turning off the built-in regulator (external V
13.4.1 Reset by the RESETP pin .................................................................................... 370
14.2.1 Timer Start Register (TSTR) ............................................................................... 374
14.2.2 Timer Control Registers (TCR) ........................................................................... 374
14.2.3 Timer Constant Registers (TCOR) ...................................................................... 376
14.2.4 Timer Counters (TCNT) ...................................................................................... 376
14.3.1 Counter Operation ............................................................................................... 377
DD
used) ....................... 369