HD6432351 datasheet(506/1025 Pages) RENESAS

506 / 1025 page

Section 10 16-Bit Timer Pulse Unit (TPU)

Rev. 3.00 Sep 15, 2006 page 472 of 988

REJ09B0330-0300

Example of PWM Mode Setting Procedure

Figure 10.24 shows an example of the PWM mode setting procedure.

Select counter clock

PWM mode

Select counter clearing source

Select waveform output level

[1]

[2]

[3]

Set TGR

[4]

Set PWM mode

[5]

Start count

[6]

[1] Select the counter clock with bits TPSC2 to

TPSC0 in TCR. At the same time, select the

input clock edge with bits CKEG1 and CKEG0 in

TCR.

[2] Use bits CCLR2 to CCLR0 in TCR to select the

TGR to be used as the TCNT clearing source.

[3] Use TIOR to designate the TGR as an output

compare register, and select the initial value and

output value.

[4] Set the cycle in the TGR selected in [2], and set

the duty in the other the TGR.

[5] Select the PWM mode with bits MD3 to MD0 in

TMDR.

[6] Set the CST bit in TSTR to 1 to start the count

operation.

Figure 10.24 Example of PWM Mode Setting Procedure

Examples of PWM Mode Operation

Figure 10.25 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 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.

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