Datasheet

Section 11 16-Bit Timer Pulse Unit (TPU)
Rev. 6.00 Mar. 18, 2010 Page 400 of 982
REJ09B0054-0600
TCNT value
TGR
H'0000
CST bit
TGF
Time
Counter cleared by TGR
compare match
Flag cleared by software, DTC, or
DMAC
*
activation
Note: * Supported only by the H8S/2239 Group.
Figure 11.5 Periodic Counter Operation
Waveform Output by Compare Match: The TPU can perform 0, 1, or toggle output from the
corresponding output pin using a compare match.
1. Example of setting procedure for waveform output by compare match
Figure 11.6 shows an example of the setting procedure for waveform output by a compare
match.
Select waveform output mode
Output selection
Set output timing
Start count
<Waveform output>
[1]
[2]
[3]
[1] Select initial value 0 output or 1 output, and
compare match output value 0 output, 1 output,
or toggle output, by means of TIOR. The set
initial value is output at the TIOC pin until the
first compare match occurs.
[2] Set the timing for compare match generation in
TGR.
[3] Set the CST bit in TSTR to 1 to start the count
operation.
Figure 11.6 Example of Setting Procedure for Waveform Output by Compare Match