Application Examples - Hitachi H8/3664 Hardware Manual

Table of Contents

Table 11.4 Timer V Interrupt Sources

Application Examples

Pulse Output with Arbitrary Duty Cycle: Figure 11.9 shows an example of output of pulses

with an arbitrary duty cycle. To set up this output:

• Clear bit CCLR1 to 0 and set bit CCLR0 to 1 in TCRV0 so that TCNTV will be cleared by

compare match with TCORA.

• Set bits OS3 to OS0 to 0110 in TCSRV so that the output will go to 1 at compare match with

TCORA and to 0 at compare match with TCORB.

• Set bits CKS2 to CKS0 in TCRV0 and bit ICKS0 in TCRV1 to select the desired clock source.

With these settings, a waveform is output without further software intervention, with a period

determined by TCORA and a pulse width determined by TCORB.

Generated from CMFA

Generated from CMFB

Generated from OVF

Figure 11.9 Pulse Output Example

Vector Address

Counter cleared