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RL78/F13, F14 CHAPTER 8 TIMER RD

R01UH0368EJ0210 Rev.2.10 633

Dec 10, 2015

8.3.4 PWM Function

In PWM function, a PWM waveform is output. Up to three PWM waveforms with the same period can be output by timer

RDi (i = 0 or 1). Also, up to six PWM waveforms with the same period can be output by synchronizing timer RD0 and timer

RD1.

Since this mode functions by a combination of the TRDIOji pin (i = 0 or 1, j = B, C, or D) and TRDGRji register, PWM

function, or any other mode or function, can be selected for each individual pin. (However, since the TRDGRAi register is

used when using any pin for PWM function, the TRDGRAi register cannot be used for other modes.)

Figure 8-52 shows the Block Diagram of PWM function, Table 8-16 lists the PWM Function Specifications, and Figure 8-

53 and Figure 8-54 show Operation Examples in PWM Function.

Figure 8-52. Block Diagram of PWM Function

TRDIOBi

Output

control

Comparator

TRDGRAi

TRDi

Compare match signal

Comparator

TRDGRBi

TRDIOCi

Comparator

TRDGRCi

Compare match signal

Comparator

TRDGRDi

TRDIODi

(Note 1)

(Note 2)

Remark

i = 0 or 1

Notes:

1. When the TRDBFCi bit in the TRDMR register is set to 1 (TRDGRCi register is buffer register for TRDGRAi register).

2. When the TRDBFDi bit in the TRDMR register is set to 1 (TRDGRDi register is buffer register for TRDGRBi register).

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