SH7125_08 Datasheet, PDF (257/774 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 9 Multi-Function Timer Pulse Unit 2 (MTU2)
Figure 9.6 illustrates periodic counter operation.
TCNT value
TGR
Counter cleared by TGR
compare match
H'0000
CST bit
TGF
Time
Flag cleared by software
Figure 9.6 Periodic Counter Operation
Waveform Output by Compare Match:
The MTU2 can perform 0, 1, or toggle output from the corresponding output pin using compare
match.
1. Example of Setting Procedure for Waveform Output by Compare Match
Figure 9.7 shows an example of the setting procedure for waveform output by compare match
Output selection
Select waveform output [1]
mode
Set output timing
[2]
[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.
Start count operation [3]
<Waveform output>
Figure 9.7 Example of Setting Procedure for Waveform Output by Compare Match
Rev. 4.00 Jul. 25, 2008 Page 237 of 750
REJ09B0243-0400