LM3S1637 Datasheet, PDF (559/696 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1637 Microcontroller
16.1
■ 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 16-1 on page 559 provides the Stellaris PWM module unit diagram and Figure 16-2 on page 560
provides a more detailed diagram of a Stellaris PWM generator. The LM3S1637 controller contains
three generator blocks (PWM0, PWM1, and PWM2) and generates six independent PWM signals
or three paired PWM signals with dead-band delays inserted.
Figure 16-1. PWM Unit Diagram
PWM Clock
Fault
System Clock
Control and
Status
PWMCTL
PWMSYNC
PWMSTATUS
Interrupts
Triggers
Interrupt
PWMINTEN
PWMRIS
PWMISC
PWM0_A
PWM
PWM0_B
Generator 0
PWM0_Fault
PWM1_A
PWM
PWM1_B
Generator 1
PWM1_Fault
PWM2_A
PWM
PWM2_B
Generator 2
PWM2_Fault
PWM
Output
Control
Logic
PWM 0
PWM 1
PWM 2
PWM 3
PWM 4
PWM 5
Output
PWMENABLE
PWMINVERT
PWMFAULT
June 18, 2012
559
Texas Instruments-Production Data