4559 datasheet(38/148 Pages) RENESAS

38 / 148 page

Rev.1.04

Aug 23, 2007

Page 38 of 146

REJ03B0188-0104

4559 Group

Fig 37. Timer 2 operation example

Timer 2 count source

Timer 2 start

Timer 2 count value

(Reload register)

Timer 2 underflow signal

PWM signal

0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016

0316

(R2L)

PWM1 signal “L” fixed

- CNTR pin output invalid (W23=0)

Timer 2 count source

Timer 2 start

Timer 2 count value

(Reload register)

Timer 2 underflow signal

PWM signal

0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116

0316

(R2L)

(R2H)

(R2L)

(R2H)

(R2L)

(R2H)

PWM period 7 clock

* : “0316” is set to reload register R3L and “0216” is set to reload register R3H.

4 clock

3 clock

4 clock

3 clock

4 clock

Timer 2 count source

Timer 2 start

Timer 2 count value

(Reload register)

Timer 2 underflow signal

PWM signal

0216 0116 0016

0216

0116 0016 0316 0216 0116 0016

0216

0116 0016 0316 0216 0116 0016 0216

0316

(R2L)

(R2H)

(R2L)

(R2H)

(R2L)

(R2H)

PWM period 7.5 clock

4 clock

3.5 clock

4 clock

3.5 clock

4 clock

Note: When the PWM signal “H” interval expansion function is valid,

set “1” or more to reload register R2H.

- CNTR pin output valid (W23=1), PWM signal “H” interval expansion function invalid (W22=0)

- CNTR pin output valid (W23=1), PWM signal “H” interval expansion function valid (W22=1) (Note)

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