LM3S608 Datasheet, PDF (26/416 Pages) List of Unclassifed Manufacturers – Microcontroller

Architectural Overview
1.4.3
1.4.3.1
1.4.3.2
1.4.4
1.4.4.1
On the LM3S608, PWM motion control functionality can be achieved through the motion control
features of the general-purpose timers (using the CCP pins).
CCP Pins (see page 168)
The General-Purpose Timer Module's CCP (Capture Compare PWM) pins are software programmable
to support a simple PWM mode with a software-programmable output inversion of the PWM signal.
Analog Peripherals
To handle analog signals, the LM3S608 microcontroller offers an Analog-to-Digital Converter (ADC).
For support of analog signals, the LM3S608 microcontroller offers one analog comparator.
ADC (see page 221)
An analog-to-digital converter (ADC) is a peripheral that converts a continuous analog voltage to a
discrete digital number.
The LM3S608 ADC module features 10-bit conversion resolution and supports eight input channels,
plus an internal temperature sensor. Four buffered sample sequences allow rapid sampling of up
to eight analog input sources without controller intervention. Each sample sequence provides flexible
programming with fully configurable input source, trigger events, interrupt generation, and sequence
priority.
Analog Comparators (see page 364)
An analog comparator is a peripheral that compares two analog voltages, and provides a logical
output that signals the comparison result.
A comparator can compare a test voltage against any one of these voltages:
■ An individual external reference voltage
■ A shared single external reference voltage
■ A shared internal reference voltage
The comparator can provide its output to a device pin, acting as a replacement for an analog
comparator on the board, or it can be used to signal the application via interrupts or triggers to the
ADC to cause it to start capturing a sample sequence. The interrupt generation and ADC triggering
logic is separate. This means, for example, that an interrupt can be generated on a rising edge and
the ADC triggered on a falling edge.
Serial Communications Peripherals
The LM3S608 controller supports both asynchronous and synchronous serial communications with:
■ Two fully programmable 16C550-type UARTs
■ One SSI module
■ One I²C module
UART (see page 254)
A Universal Asynchronous Receiver/Transmitter (UART) is an integrated circuit used for RS-232C
serial communications, containing a transmitter (parallel-to-serial converter) and a receiver
(serial-to-parallel converter), each clocked separately.
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October 01, 2007
Preliminary