Renesas H8S/2100 Series Hardware Manual page 292

6-bit single-chip microcomputer

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Table of Contents

Section 10 16-Bit Timer Pulse Unit (TPU)

Table 10.19 PWM Output Registers and Output Pins

Note: In PWM mode 2, PWM output is not possible for the TGR register in which the period is set.

Example of PWM Mode Setting Procedure

Figure 10.21 shows an example of the PWM mode setting procedure.

Select counter clock

Select counter clearing source

Select waveform output level

Set PWM mode

Figure 10.21 Example of PWM Mode Setting Procedure

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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

Use bits CCLR2 to CCLR0 in TCR to select the

TGR to be used as the TCNT clearing source.

Use TIOR to designate the TGR as an output

compare register, and select the initial value and

output value.

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

the duty in the other the TGR.

Select the PWM mode with bits MD3 to MD0 in

Set the CST bit in TSTR to 1 start the count