LM3S5632 Luminary Micro, Inc, LM3S5632 Datasheet - Page 34

• Manufacturer Part Number: LM3S5632
• Description: Lm3s5632 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Architectural Overview
1.4.2
1.4.2.1
1.4.3
1.4.3.1
1.4.4
1.4.4.1
34
Motor Control Peripherals
To enhance motor control, the LM3S5632 controller features Pulse Width Modulation (PWM) outputs.
PWM
Pulse width modulation (PWM) is a powerful technique for digitally encoding analog signal levels.
High-resolution counters are used to generate a square wave, and the duty cycle of the square
wave is modulated to encode an analog signal. Typical applications include switching power supplies
and motor control.
On the LM3S5632, PWM motion control functionality can be achieved through:
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CCP Pins (see page 289)
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 LM3S5632 microcontroller offers an Analog-to-Digital Converter
(ADC).
ADC (see page 340)
An analog-to-digital converter (ADC) is a peripheral that converts a continuous analog voltage to a
discrete digital number.
The LM3S5632 ADC module features 10-bit conversion resolution and supports six 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.
Serial Communications Peripherals
The LM3S5632 controller supports both asynchronous and synchronous serial communications
with:
■
■
■
■
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UART (see page 372)
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.
The motion control features of the general-purpose timers using the CCP pins
Two fully programmable 16C550-type UARTs
One SSI module
Two I
One USB 2.0 full-speed controller
One CAN unit
2
C modules
Preliminary
June 02, 2008