MC9S12E128CFUE Datasheet, PDF (326/606 Pages) Freescale Semiconductor, Inc – MC9S12E128 Data Sheet

Chapter 11 Pulse Width Modulator with Fault Protection (PMF15B6CV2)
PWM source selection is based on a number of factors:
— State of current sense pins
— IPOL bit
— OUTCTL bit
— Center vs edge aligned
IPOLA or
ISENS0 or
OUTCTL0
PWM
GENERATOR
0
PWM
GENERATOR
1
SWAPA
GENERATE
COMPLEMENT &
INSERT DEADTIME
OUT0
OUTCTL0
MSK0
PAD0
1
1
FAULT
&
INDEPA
POLARITY _PAD1
CONTROL
1
OUT1
1
OUTCTL1
MSK1
Figure 11-2. Detail of Mux, Swap, and Deadtime Functions
11.2 External Signal Description
The pulse width modulator has external pins named PWM0–5, FAULT0–3, and IS0–IS2.
11.2.1 PWM0–PWM5 Pins
PWM0–PWM5 are the output pins of the six PWM channels.
11.2.2 FAULT0–FAULT3 Pins
FAULT0–FAULT3 are input pins for disabling selected PWM outputs.
11.2.3 IS0–IS2 Pins
IS0–IS2 are current status pins for top/bottom pulse width correction in complementary channel operation
while deadtime is asserted.
MC9S12E128 Data Sheet, Rev. 1.07
326
Freescale Semiconductor