LM3S317-IQN20-A0T Luminary Micro, Inc., LM3S317-IQN20-A0T Datasheet - Page 22

• Manufacturer Part Number: LM3S317-IQN20-A0T
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

Architectural Overview
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ADC
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Analog Comparator
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PWM
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FIFO trigger levels of 1/8, 1/4, 1/2, 3/4, and 7/8
Standard asynchronous communication bits for start, stop, and parity
False-start-bit detection
Line-break generation and detection
Single- and differential-input configurations
Six 10-bit channels (inputs) when used as single-ended inputs
Sample rate of 250 thousand samples/second
Flexible, configurable analog-to-digital conversion
Four programmable sample conversion sequences from one to eight entries long, with
corresponding conversion result FIFOs
Each sequence triggered by software or internal event (timers, analog comparators, PWM
or GPIO)
One independent integrated analog comparator
Configurable for output to: drive an output pin, or generate an interrupt, or initiate an ADC
sample sequence
Compare external pin input to external pin input or to internal programmable voltage
reference
Three PWM generator blocks, each with one 16-bit counter, two comparators, a PWM
generator, and a dead-band generator
One 16-bit counter
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Two comparators
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PWM generator
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Dead-band generator
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Flexible output control block with PWM output enable of each PWM signal
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
Comparator value updates can be synchronized
Produces output signals on match
Output PWM signal is constructed based on actions taken as a result of the counter
and comparator output signals
Produces two independent PWM signals
Produces two PWM signals with programmable dead-band delays suitable for driving
a half-H bridge
Can be bypassed, leaving input PWM signals unmodified
Preliminary
May 4, 2007