HD64F3664FPV Datasheet, PDF (185/446 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 11 Timer V
φ
TMRIV(External
counter reset
input pin )
TCNTV reset
signal
TCNTV
N–1
N
H'00
Figure 11.8 Clear Timing by TMRIV Input
11.5 Timer V Application Examples
11.5.1 Pulse Output with Arbitrary Duty Cycle
Figure 11.9 shows an example of output of pulses with an arbitrary duty cycle.
1. Set bits CCLR1 and CCLR0 in TCRV0 so that TCNTV will be cleared by compare match with
TCORA.
2. Set bits OS3 to OS0 in TCSRV so that the output will go to 1 at compare match with TCORA
and to 0 at compare match with TCORB.
3. Set bits CKS2 to CKS0 in TCRV0 and bit ICKS0 in TCRV1 to select the desired clock source.
4. With these settings, a waveform is output without further software intervention, with a period
determined by TCORA and a pulse width determined by TCORB.
TCNTV value
H'FF
TCORA
TCORB
H'00
TMOV
Counter cleared
Time
Figure 11.9 Pulse Output Example
Rev. 6.00 Mar. 24, 2006 Page 155 of 412
REJ09B0142-0600