Datasheet

Figure 51-32. Cycle-By-Cycle Duty Mode: LED String Control
I
LED
I
REF
Time
PWMH1
C
OUT
L D
I
L
PWMH0
C
IN
V
IN
V
DC
PWMH1
V
OUT
I
LED
R
SHUNT
TRGIN1
TRGEDGE(PWM_ETRG1) = 1
+
+
L
51.6.5.4 Leading-Edge Blanking (LEB)
PWM channels 1 and 2 support leading-edge blanking. Leading-edge blanking masks the external trigger input when
a transient occurs on the corresponding PWM output. It masks potential spurious external events due to power
transistor switching.
The blanking delay on each external trigger input is configured by programming the LEBDELA
Yx in the PWM
Leading-Edge Blanking Register.
The LEB can be enabled on both the rising and the falling edges for the PWMH and PWML outputs through the bits
PWMLFEN, PWMLREN, PWMHFEN, PWMHREN.
Any event on the PWMEXTRGx input which occurs during the blanking time is ignored.
SAM E70/S70/V70/V71 Family
Pulse W
idth Modulation Controller (PWM)
©
2019 Microchip Technology Inc.
Datasheet
DS60001527D-page 1582