HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 375

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Example of PWM Mode Setting Procedure
Figure 9.21 shows an example of the PWM mode setting procedure.
Examples of PWM Mode Operation
Figure 9.22 shows an example of PWM mode 1 operation.
In this example, TGRA compare match is set as the TCNT clearing source, 0 is set for the TGRA
initial output value and output value, and 1 output is set as the TGRB output value.
In this case, the value set in TGRA is used as the period, and the values set in TGRB registers as
the duty.
Select counter clearing source
Select waveform output level
Select counter clock
Set PWM mode
<PWM mode>
PWM mode
Start count
Set TGR
Figure 9.21 Example of PWM Mode Setting Procedure
[1]
[2]
[3]
[4]
[5]
[6]
[1] Select the counter clock with bits TPSC2 to
[2] Use bits CCLR2 to CCLR0 in TCR to select
[3] Use TIOR to designate the TGR as an output
[4] Set the cycle in the TGR selected in [2], and
[5] Select the PWM mode with bits MD3 to MD0
[6] Set the CST bit in TSTR to 1 to start the count
TPSC0 in TCR. At the same time, select the
input clock edge with bits CKEG1 and CKEG0
in TCR.
the TGR to be used as the TCNT clearing
source.
compare register, and select the initial value
and output value.
set the duty in the other the TGR.
in TMDR.
operation.
Rev.3.00 Mar. 26, 2007 Page 333 of 772
Section 9 16-Bit Timer Pulse Unit (TPU)
REJ09B0355-0300