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UPD784938 Datasheet(PDF) 17 Page - NEC |
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UPD784938 Datasheet(HTML) 17 Page - NEC |
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17 / 733 page  17 Preliminary User’s Manual U13987EJ1V0UM00 11.9.1 Operation as interval timer (1) .................................................................................................... 347 11.9.2 Operation as interval timer (2) .................................................................................................... 350 11.9.3 Pulse width measurement operation ........................................................................................... 353 11.9.4 Operation as PWM output ........................................................................................................... 356 11.9.5 Operation as PPG output ............................................................................................................ 360 11.9.6 Operation as external event counter ........................................................................................... 364 11.9.7 Operation as one-shot timer ........................................................................................................ 366 11.10 Cautions .................................................................................................................................... 369 CHAPTER 12 TIMER 3 ........................................................................................................................... 373 12.1 Function .................................................................................................................................... 373 12.2 Configuration ............................................................................................................................ 374 12.3 Timer 3 Control Registers ...................................................................................................... 376 12.4 Timer Counter 3 (TM3) Operation .......................................................................................... 378 12.4.1 Basic operation ............................................................................................................................ 378 12.4.2 Clear operation ............................................................................................................................. 380 12.5 Compare Register Operation ................................................................................................. 382 12.6 Example of Use ........................................................................................................................ 383 12.7 Cautions .................................................................................................................................... 385 CHAPTER 13 WATCHDOG TIMER ....................................................................................................... 387 13.1 Configuration ............................................................................................................................ 387 13.2 Watchdog Timer Mode Register (WDM) ................................................................................ 388 13.3 Operation .................................................................................................................................. 390 13.3.1 Count operation ............................................................................................................................ 390 13.3.2 Interrupt priorities ......................................................................................................................... 390 13.4 Cautions .................................................................................................................................... 391 13.4.1 General cautions on use of watchdog timer ............................................................................... 391 13.4.2 Cautions on µPD784938 Subseries watchdog timer.................................................................. 392 CHAPTER 14 WATCH TIMER ................................................................................................................ 393 CHAPTER 15 PWM OUTPUT UNIT ..................................................................................................... 395 15.1 PWM Output Unit Configuration ............................................................................................ 395 15.2 PWM Output Unit Control Registers ..................................................................................... 397 15.2.1 PWM control register (PWMC) .................................................................................................... 397 15.2.2 PWM prescaler register (PWPR) ................................................................................................ 398 15.2.3 PWM modulo registers (PWM0, PWM1) ..................................................................................... 398 15.3 PWM Output Unit Operation ................................................................................................... 399 15.3.1 Basic PWM output operation ....................................................................................................... 399 15.3.2 PWM pulse output enabling/disabling ......................................................................................... 400 15.3.3 PWM pulse active level specification .......................................................................................... 400 15.3.4 PWM pulse width rewrite cycle specification .............................................................................. 401 15.4 Caution ...................................................................................................................................... 402 CHAPTER 16 A/D CONVERTER ........................................................................................................... 403 16.1 Configuration ............................................................................................................................ 403 16.2 A/D Converter Mode Register (ADM) .................................................................................... 407 |
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