4552 Datasheet, PDF (37/145 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4552 Group
q CNTR output: invalid (W23 = “0”)
Timer 2 count source
Timer 2 count value
(Reload
register)
Timer 2 underflow signal
0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016 0316 0216 0116 0016
(R2L)
(R2L)
(R2L)
(R2L)
(R2L)
PWM signal (output invalid)
Timer 2 start
PWM signal “L”
fixed
q CNTR output: valid (W23 = “1”)
PWM signal “H” interval extension function: invalid (W22 = “0”)
Timer 2 count source
Timer 2 count value
(Reload
register)
Timer 2 underflow signal
0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116
(R2L)
(R2H)
(R2L)
(R2H)
(R2L)
(R2H)
PWM
signal
Timer 2 start
3 clock
PWM period 7 clock
3 clock
PWM period 7 clock
q CNTR output: valid (W23 = “1”)
PWM signal “H” interval extension function: valid (W22 = “1”) (Note)
Timer 2 count source
Timer 2 count value
(Reload
register)
Timer 2 underflow signal
0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216 0116 0016 0316 0216 0116 0016 0216
(R2L)
(R2H)
(R2L)
(R2H)
(R2L)
(R2H)
PWM
signal
Timer 2 start
3.5 clock
PWM period 7.5 clock
3.5 clock
PWM period 7.5 clock
Note: At PWM signal “H” interval extension function: valid, set “0116” or more to reload register R2H.
Fig. 26 Timer 2 operation (reload register R2L: “0316”, R2H: “0216”)
Rev.3.02 Dec 22, 2006 page 37 of 142
REJ03B0023-0302