STM8S datasheet(179/467 Pages) STMICROELECTRONICS

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RM0016

16-bit advanced control timer (TIM1)

261

Deadtime insertion is enabled by setting the CCi E and CCi NE bits, and the MOE bit if the

break circuit is present. Each channel embeds an 8-bit deadtime generator. It generates two

outputs: OCi and OCi N from a reference waveform, OCi REF. If OCi and OCi N are active

high:

•

The OCi output signal is the same as the reference signal except for the rising edge,

which is delayed relative to the reference rising edge.

•

The OCi N output signal is the opposite of the reference signal except for the rising

edge, which is delayed relative to the reference falling edge.

If the delay is greater than the width of the active output (OCi or OCi N), the corresponding

pulse is not generated.

Figure 73, Figure 74, and Figure 75 show the relationships between the output signals of

the deadtime generator and the reference signal OCi REF (where CCi P = 0, CCi NP = 0,

MOE = 1, CCi E = 1, and CCi NE = 1 in these examples)

Figure 73. Complementary output with deadtime insertion

Figure 74. Deadtime waveforms with a delay greater than the negative pulse

Figure 75. Deadtime waveforms with a delay greater than the positive pulse

The deadtime delay is the same for each of the channels and is programmable with the

DTG bits in the TIM1_DTR register. Refer to Section 17.7.31: Deadtime register

(TIM1_DTR) on page 217 for delay calculation.

STM8S 数据表(PDF) 179 Page - STMicroelectronics