LM3S812_16 Datasheet, PDF (496/590 Pages) Texas Instruments – Stellaris LM3S812 Microcontroller

Pulse Width Modulator (PWM)
15.1
■ Flexible output control block with PWM output enable of each PWM signal
– PWM output enable of each PWM signal
– Optional output inversion of each PWM signal (polarity control)
– Optional fault handling for each PWM signal
– Synchronization of timers in the PWM generator blocks
– Interrupt status summary of the PWM generator blocks
■ Can initiate an ADC sample sequence
Block Diagram
Figure 15-1 on page 496 provides the Stellaris PWM module unit diagram and Figure 15-2 on page 497
provides a more detailed diagram of a Stellaris PWM generator. The LM3S812 controller contains
one generator block (PWM0) and generates two independent PWM signals or one paired PWM
signal with dead-band delays inserted.
Figure 15-1. PWM Unit Diagram
PWM Clock
Fault
System Clock
Control and
Status
PWMCTL
PWMSYNC
PWMSTATUS
PWM0_A
PWM
PWM0_B
Generator 0
PWM0_Fault
PWM
Output
Control
Logic
PWM 0
PWM 1
Interrupts
Triggers
Interrupt
PWMINTEN
PWMRIS
PWMISC
Output
PWMENABLE
PWMINVERT
PWMFAULT
496
July 14, 2014
Texas Instruments-Production Data