4553 datasheet(37/145 Pages) RENESAS

37 / 145 page

Rev.3.02

Dec 22, 2006

page 37 of 142

REJ03B0024-0302

4553 Group

Fig. 26 Timer 2 operation (reload register R2L: “0316”, R2H: “0216”)

q CNTR output: invalid (W23 = “0”)

Timer 2 count source

Timer 2 count value

(Reload

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

0316

(R2L)

Timer 2 underflow signal

PWM signal (output invalid)

Timer 2 start

PWM signal “L”

fixed

0216

0316

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

(R2H)

PWM period 7 clock

0316

0116 0016

0216

0116 0016

0216 0116 0016

0316

0216

0116 0016

0216 0116 0016

0316

0216

(R2L)

(R2H)

(R2L)

(R2H)

(R2L)

(R2H)

PWM period 7.5 clock

q CNTR output: valid (W23 = “1”)

PWM signal “H” interval extension function: invalid (W22 = “0”)

Timer 2 count source

Timer 2 count value

(Reload

Timer 2 underflow signal

PWM

signal

Timer 2 count source

Timer 2 count value

(Reload

Timer 2 underflow signal

PWM

signal

Timer 2 start

q CNTR output: valid (W23 = “1”)

PWM signal “H” interval extension function: valid (W22 = “1”) (Note)

Note: At PWM signal “H” interval extension function: valid, set “0116” or more to reload register R2H.

(R2L)

(R2H)

(R2L)

(R2H)

(R2L)

3 clock

3.5 clock

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