Datasheet

Section 11 8-Bit Timer (TMR)
Rev. 3.00 Sep. 28, 2009 Page 226 of 710
REJ09B0384-0300
11.3.4 Timing of Overflow Flag (OVF) Setting
The OVF bit in TCSR is set to 1 when the TCNT overflows (changes from H'FF to H'00). Figure
11.6 shows the timing of OVF flag setting.
φ
OVF
Overflow signal
TCNT H'FF H'00
Figure 11.6 Timing of OVF Flag Setting