Interval Timer Mode - Renesas H8S/2100 Series Hardware Manual

6-bit single-chip microcomputer

Hide thumbs Also See for H8S/2100 Series:

Table of Contents

Interval Timer Mode

When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each

time the TCNT overflows, as shown in figure 13.3. Therefore, an interrupt can be generated at

intervals. When the TCNT overflows in interval timer mode, an interval timer interrupt (WOVI) is

requested at the same time the OVF flag of TCSR is set to 1. The timing is shown figure 13.4.

WOVI: Interval timer interrupt request occurrence

Overflow signal

(internal signal)

Figure 13.3 Interval Timer Mode Operation

Figure 13.4 OVF Flag Set Timing

Section 13 Watchdog Timer (WDT)

Rev. 1.00 May 09, 2008 Page 357 of 954

REJ09B0462-0100