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LM3S2950 Datasheet, PDF (41/710 Pages) Texas Instruments – Stellaris® LM3S2950 Microcontroller | |||
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Stellaris® LM3S2950 Microcontroller
⢠Produces two PWM signals with programmable dead-band delays suitable for driving a
half-H bridge
⢠Can be bypassed, leaving input PWM signals unmodified
â 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
â QEI
â Position integrator that tracks the encoder position
â Velocity capture using built-in timer
â The input frequency of the QEI inputs may be as high as 1/4 of the processor frequency (for
example, 12.5 MHz for a 50-MHz system)
â Interrupt generation on:
⢠Index pulse
⢠Velocity-timer expiration
⢠Direction change
⢠Quadrature error detection
â Power
â On-chip Low Drop-Out (LDO) voltage regulator, with programmable output user-adjustable
from 2.25 V to 2.75 V
â Hibernation module handles the power-up/down 3.3 V sequencing and control for the core
digital logic and analog circuits
â Low-power options on controller: Sleep and Deep-sleep modes
â Low-power options for peripherals: software controls shutdown of individual peripherals
â 3.3-V supply brown-out detection and reporting via interrupt or reset
â Flexible Reset Sources
â Power-on reset (POR)
â Reset pin assertion
â Brown-out (BOR) detector alerts to system power drops
June 18, 2012
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Texas Instruments-Production Data
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