4571 Datasheet, PDF (34/126 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4571 Group
- CNTR1 pin output invalid (W33=0)
Timer 3 count source
Timer 3 count value
(Reload register)
Timer 3 underflow signal
0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016
(R3L)
(R3L)
(R3L)
(R3L)
(R3L)
PWM signal
Timer 3 start
PWM1 signal “L” fixed
- CNTR1 pin output valid (W33=1), PWM signal “H” interval expansion function invalid (W32=0)
Timer 3 count source
Timer 3 count value
(Reload register)
Timer 3 underflow signal
0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116
(R3L)
(R3H)
(R3L)
(R3H)
(R3L)
(R3H)
PWM signal
4 clock
Timer 3 start
3 clock
4 clock
PWM period 7 clock
3 clock
4 clock
PWM period 7 clock
- CNTR1 pin output valid (W33=1), PWM signal “H” interval expansion function valid (W32=1) (Note)
Timer 3 count source
Timer 3 count value
(Reload register)
Timer 3 underflow signal
0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216
(R3L)
(R3H)
(R3L)
(R3H)
(R3L)
(R3H)
PWM signal
4 clock
Timer 3 start
3.5 clock
4 clock
PWM period 7.5 clock
3.5 clock
4 clock
PWM period 7.5 clock
* : “0316” is set to reload register R3L and “02 16” is set to reload register R3H.
Note: When the PWM signal “H” interval expansion function is valid,
set “1” or more to reload register R3H.
Fig 34. Timer 3 operation example
Rev.1.02 May 25, 2007 Page 34 of 124
REJ03B0179-0102