NUC442JI8AE Datasheet, PDF (164/228 Pages) –

NUC442
6.9 PWM Generator and Capture Timer (PWM)
6.9.1 Overview
The NUC442 has two PWM generators － PWM0 and PWM1. PWM0 supports 6 channels PWM
output or 6 channels input capture, and these two functions share the same pins (PWM0_CH0/
PWM0_CH1/PWM0_CH2/PWM0_CH3/PWM0_CH4/PWM0_CH5). PWM1 also supports 6
channels PWM output or 6 channels input capture, and these two functions share the same pins
(PWM1_CH0/PWM1_CH1/PWM1_CH2/ PWM1_CH3/PWM1_CH4/PWM1_CH5).
The PWM generator has 16-bit PWM counter and comparator, and the PWM counter supports
edge-aligned or center-aligned operating types. The PWM generator supports two standard PWM
output modes: Independent output mode and Complementary output mode with 8-bit Dead-zone
generator. In addition, PWM generator supports two special output mode: Synchronize mode and
Group mode. It also has 8-bit prescaler and clock divider with 5 divided frequencies (1, 1/2, 1/4,
1/8, 1/16) to support wide range clock frequency of PWM counter. For PWM output control unit, it
supports polarity output function, independent pin mask function and brake function. PWM
generator can send ADC start trigger signal if one of the following conditions happened: PWM
counter period point, PWM counter center point, PWM output rising edge and PWM output falling
edge.
The PWM generator also supports input capture function. It supports latch PWM counter value to
corresponding register when input channel has a rising transition, falling transition or both
transition is happened.
6.9.2 Features
6.9.2.1
PWM function features
 Supports 12 PWM output channels with 16-bit resolution
 Supports 8-bit prescaler and clock divider
 Supports period point, center point and edge point PWM Interrupt
 Supports One-shot or Auto-reload PWM counter operation mode
 Supports Edge-aligned or Center-aligned PWM counter type
 Supports 8-bit dead zone with maximum divided 16 prescaler
 Supports brake function source from pin or comparator output
 Supports mask function for each PWM pin
 Supports independent, complementary, synchronized and group PWM output mode
 Supports trigger ADC start conversion at PWM counter period point, PWM counter
center point, PWM output rising edge and PWM output falling edge
6.9.2.2
Capture Function Features
 Supports 12 Capture input channels with 16-bit resolution
 Supports rising or falling capture condition
 Supports capture interrupt
June 16, 2016
Page 164 of 228
Rev 1.09