Datasheet

Section 11 Timer W
Rev.4.00 Nov. 02, 2005 Page 143 of 304
REJ09B0143-0400
TCNT value
GRA
H'0000
CTS bit
IMFA
Time
Flag cleared
by software
Figure 11.3 Periodic Counter Operation
By setting a general register as an output compare register, compare match A, B, C, or D can cause
the output at the FTIOA, FTIOB, FTIOC, or FTIOD pin to output 0, output 1, or toggle. Figure
11.4 shows an example of 0 and 1 output when TCNT operates as a free-running counter, 1 output
is selected for compare match A, and 0 output is selected for compare match B. When signal is
already at the selected output level, the signal level does not change at compare match.
TCNT value
H'FFFF
H'0000
FTIOA
FTIOB
Time
GRA
GRB
No change No change
No change No change
Figure 11.4 0 and 1 Output Example (TOA = 0, TOB = 1)
Figure 11.5 shows an example of toggle output when TCNT operates as a free-running counter,
and toggle output is selected for both compare match A and B.