The LM3S811 is based on the high-performance ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded applications. It is fully Thumb®-compatible with a Thumb-2-only instruction set and features hardware-division and single-cycle-multiplication. The integrated Nested Vectored Interrupt Controller (NVIC) provides deterministic interrupt handling. Target applications include factory automation and control, industrial control power devices, building and home automation, and brushless DC motors.

Product Features

• 32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded applications
• Thumb®-compatible Thumb-2-only instruction set processor core for high code density
• 50-MHz operation
• Hardware-division and single-cycle-multiplication
• Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt handling
• 27 interrupt channels with eight priority levels
• 64 KB single-cycle flash with two forms of flash protection on a 2-KB block basis
• 8 KB single-cycle SRAM
• Three timers, each of which can be configured: as a single 32-bit timer, as a dual 16-bit timer with capture and simple PWM modes, or to initiate an ADC event
• Real-Time Clock (RTC) capability
• 32-bit down counter
• Separate watchdog clock with an enable
• Programmable interrupt generation logic with interrupt masking
• Lock register protection from runaway software
• Reset generation logic with an enable/disable Synchronous Serial Interface (SSI)
• Programmable interface operation for Freescale SPI, National Semiconductor MICROWIRE™, or Texas Instruments synchronous serial
• Master or slave operation
• Two fully programmable 16C550-type UARTs
• Separate 16x8 transmit (TX) and 16x12 receive (RX) FIFOs to reduce CPU interrupt service loading
• Programmable baud-rate generator Analog-to-Digital Converter (ADC)
• Single- and differential-input configurations
• Four 10-bit channels (inputs) when used as singleended inputs
• Sample rate of 500 thousand samples/second
• Flexible, configurable analog-to-digital conversion
• Configurable for output to: drive an output pin, generate an interrupt, or initiate an ADC sample sequence
• Compare external pin input to external pin input or to internal programmable voltage reference
• Master and slave receive and transmit operation with transmission speed up to 100 Kbps in Standard mode and 400 Kbps in Fast mode
• Interrupt generation
• Master with arbitration and clock synchronization, multimaster support, and 7-bit addressing mode
• Six motion-control PWM outputs
• Each PWM generator block has one 16-bit counter, two comparators, a PWM generator, and a deadband generator
• Output control block with PWM output enable of each PWM signal
• Can initiate an ADC sample sequence
• 1 to 32 GPIOs, depending on user configuration
• Programmable interrupt generation
• Can initiate an ADC sample sequence
• On-chip Linear Drop-Out (LDO) voltage regulator, with programmable output user-adjustable from 2.25 V to 2.75 V
• Low-power options on processor: Sleep and Deepsleep modes
• Low-power options for peripherals: software controls shutdown of individual peripherals
• User-enabled LDO unregulated voltage detection and automatic reset
• 3.3-V supply brownout detection and reporting via interrupt or reset
• On-chip temperature sensor
• 48-pin RoHS-compliant LQFP
• Industrial operating temperature