455A Datasheet, PDF (39/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

455A Group
- CNTR pin 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
Timer 2 start
PWM1 signal “L” fixed
- CNTR pin output valid (W23=1), PWM signal “H” interval expansion 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
4 clock
Timer 2 start
3 clock
4 clock
PWM period 7 clock
3 clock
4 clock
PWM period 7 clock
- CNTR pin output valid (W23=1), PWM signal “H” interval expansion 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
4 clock
Timer 2 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 “0216” is set to reload register R3H.
Note: When the PWM signal “H” interval expansion function is valid,
set “1” or more to reload register R2H.
Fig 37. Timer 2 operation example
Rev.1.01 Feb 15, 2008 Page 39 of 146
REJ03B0224-0101