NEC 78014Y Series, User Manual

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CHAPTER 8 16-BIT TIMER/EVENT COUNTER
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Figure 8-5. 16-Bit Timer Mode Control Register Format
Symbol 7 6 5 4 3 2 1 <0> Address When Reset R/W
TMC0 0 0 0 0 TMC03 TMC02 TMC01 OVF0 FF48H 00H R/W
OVF0 16-Bit Timer Register Overflow Detection
0 Overflow not detected
1 Overflow detected
TMC03 TMC02 TMC01 Operating Mode & Clear TO0 Output Timing Interrupt Request
Mode Selection Selection Generation
0 0 0 Operation stop No change Not generated
(TM0 cleared to 0)
0 0 1 PWM mode PWM pulse output Generated on match
(free running) between TM0 and CR00
0 1 0 Free running mode Match between TM0 and
CR00
0 1 1 Match between TM0 and
CR00 or TI0 valid edge
1 0 0 Clear & start on TI0 valid Match between TM0 and
edge CR00
1 0 1 Match between TM0 and
CR00 or TI0 valid edge
1 1 0 Clear & start on match Match between TM0 and
between TM0 and CR00 CR00
1 1 1 Match between TM0 and
CR00 or TI0 valid edge
Cautions 1. Switch the clear mode and the TO0 output timing after stopping the timer operation (by setting
TMC01 through TMC03 to 0, 0, 0).
2. Set the valid edge of the INTP0/P00/TI0 pin with an external interrupt mode register (INTM0)
and select the sampling clock frequency with a sampling clock select register (SCS).
3. When using the PWM mode, set the PWM mode and then set data to CR00.
4. If clear & start mode on match between TM0 and CR00 is selected, OVF0 flag is set to 1 when
the set value of CR00 is FFFFH and the value of TM0 changes from FFFFH to 0000H.
Remarks 1. TO0 : 16-bit timer/event counter output pin
2. TI0 : 16-bit timer/event counter input pin
3. TM0 : 16-bit timer register
4. CR00 : 16-bit compare register