EM78P372KSS20 datasheet(72/118 Pages) EMC

72 / 118 page

EM78P372K

8-bit Microcontroller



Product Specification (V1.4) 05.11.2016

(This specification is subject to change without prior notice)

Period

Period-duty

PWMX

/PWMX

Duty

PWMXE=1 &

IPWMXE=0

PWMXE=0 &

IPWMXE=1

Figure 7-18 PWM Output Timing (PWMXA=1 and /PWMXA=1)

7.8.1.1

Dual PWM function

It consists of a complementary PWM (i.e. PWMX and /PWMX), one outputs PWM

signal and the other outputs inverted PWM signal, It can output any pulse width signal

you want by programming relative control registers.

The dead time mode is supported. It means that the complementary PWM signals can

be controlled to get a time interval that the complementary PWM signals won’t be

intersected.

The following Figures 6-17 ~ 6-18 show the dual PWM output waveform.

Disable dead time control (DEADTXE = 0). Set period and duty cycle (period > duty).

Set PWMXE & IPWMXE =1, PWMXA = 0/1, IPWMXA = 0/1, and finally set TXEN = 1.

PWMX

/PWMX

duty

Period-duty

PWMX

/PWMX

duty

Period-duty

PWMXA=0

IPWMXA=0

PWMXA=1

IPWMXA=1

Figure 7-19 Dual PWMX Output Waveform (DEADTXE = 0)

Set dead time > 0 (set dead time prescaler if required). Enable dead time control

( DEADTXE = 1). Set period and duty cycle (period > duty). Set PWMXE and IPWMXE

=1, PWMXA = 0, IPWMXA = 0, and finally set TXEN = 1. For loading new duty, period,

and dead time value at run time, follow the subsection

“PWM Programming Process /

Steps” to see the descriptions.

EM78P372KSS20 Datasheet(PDF) 72 Page - ELAN Microelectronics Corp

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