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LM3S2776 Datasheet, PDF (42/785 Pages) Texas Instruments – Stellaris® LM3S2776 Microcontroller | |||
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Architectural Overview
⢠Runs in Down or Up/Down mode
⢠Output frequency controlled by a 16-bit load value
⢠Load value updates can be synchronized
⢠Produces output signals at zero and load value
â Two PWM comparators
⢠Comparator value updates can be synchronized
⢠Produces output signals on match
â PWM generator
⢠Output PWM signal is constructed based on actions taken as a result of the counter and
PWM comparator output signals
⢠Produces two independent PWM signals
â Dead-band generator
⢠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
⢠Extended PWM synchronization of timer/comparator updates across the PWM generator
blocks
⢠Interrupt status summary of the PWM generator blocks
⢠Extended PWM fault handling, with multiple fault signals, programmable polarities, and
filtering
â Can initiate an ADC sample sequence
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
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November 17, 2011
Texas Instruments-Production Data
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