
Section 13 Timer W 
    Rev. 3.00 Mar. 15, 2006 Page 211 of 526 
   REJ09B0060-0300 
TCNT
Previous clock
N
N+1 N+2 N+3
New clock
Count clock
The change in signal level at clock switching is 
assumed to be a rising edge, and TCNT 
increments the count.
 
Figure 13.25 Internal Clock Switching and TCNT Operation