DK-LM3S818

LM3S818 Microcontroller Synchronous Serial Interface (SSI) ■ Programmable interface operation for Freescale SPI, ■ ■ ■ ■ ■ ■ MICROWIRE, or Texas Instruments synchronous serial interfaces Master or slave operation Programmable clock bit rate and prescale Separate transmit and receive FIFOs, 16 bits wide, 8 locations deep Programmable interface operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces Programmable data frame size from 4 to 16 bits Internal loopback test mode for diagnostic/debug testing UART ■ Two fully programmable 16C550-type UARTs ■ Separate 16x8 transmit (TX) and 16x12 receive (RX) Features 32-Bit RISC Performance ■ 32-bit ARM® Cortex™-M3 v7M architecture optimized ■ ■ ■ ■ ■ ■ ■ ■ for small-footprint embedded applications 50-MHz operation System timer (SysTick) provides a simple, 24-bit clear-on-write, decrementing, wrap-on-zero counter with a flexible control mechanism Thumb®-compatible Thumb-2-only instruction set processor core for high code density Integrated Nested Vectored Interrupt Controller (NVIC) provides deterministic interrupt handling 26 interrupt channels with eight priority levels Memory protection unit (MPU) provides a privileged mode for protected operating system functionality Unaligned data access enables data to be efficiently packed into memory Atomic bit manipulation (bit-banding) delivers maximum memory utilization and streamlined peripheral control On-Chip Memory ■ 64 KB single-cycle flash with two forms of flash protection on a 2-KB block basis ■ 8 KB single-cycle SRAM General-Purpose Timers ■ Three General-Purpose Timer Modules (GPTM), each configurable as one 32-bit or two 16-bit timers with capture and simple PWM modes, or to initiate an ADC event ■ Real-Time Clock (RTC) capability FIFOs to reduce CPU interrupt service loading ■ Programmable baud-rate generator allowing speeds up to up to 3.125 Mbps ■ Programmable FIFO length, including 1-byte deep ■ ■ ■ ■ operation providing conventional double-buffered interface FIFO trigger levels of 1/8, ¼, ½, ¾, and 7/8 Standard asynchronous communication bits for start, stop, and parity False-start-bit detection Line-break generation and detection Analog-to-Digital Converter (ADC) ■ Single- and differential-input configurations ■ Six 10-bit channels (inputs) when used as single-ended inputs ■ Sample rate of one million 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) ■ On-chip temperature sensor Analog Comparators ■ One integrated analog comparator ■ 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 PWM Watchdog Timer ■ Three PWM generator block, each with one 16-bit ■ 32-bit down counter with a programmable load counter, two comparators, a PWM generator, and a dead-band generator ■ Flexible output control block with PWM output enable of each PWM signal ■ Can initiate an ADC sample sequence ■ ■ ■ ■ register 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 Quadrature Encoder Inputs ■ Hardware position integrator tracks the encoder position LM3S818 Microcontroller ■ Velocity capture using built-in timer ■ Interrupt generation on index pulse, velocity-timer expiration, direction change, and quadrature error detection GPIOs ■ ■ ■ ■ ■ 0-30 GPIOs, depending on configuration 5-V-tolerant input/outputs Programmable interrupt generation Can initiate an ADC sample sequence Programmable drive strength and slew-rate control – Industrial-range (-40°C to +85°C) Target Applications ■ ■ ■ ■ ■ ■ Factory automation and control Industrial control power devices Building and home automation Stepper motors Brushless DC motors AC induction motors Power High-performance ARM Cortex-M3 microcontroller for real-time embedded applications ■ On-chip Low Drop-Out (LDO) voltage regulator, with ■ ■ ■ ■ ■ programmable output user-adjustable from 2.25 V to 2.75 V Low-power options on controller: Sleep and Deep-sleep 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 brown-out detection and reporting via interrupt or reset On-chip temperature sensor Flexible Reset Sources ■ Power-on reset (POR) ■ Reset pin assertion ■ Brown-out (BOR) detector alerts to system power drops Ordering Information Orderable Part Number Description LM3S818-IQN50-C2 Stellaris LM3S818 Microcontroller Industrial Temperature ® ® LM3S818-IQN50-C2T Stellaris LM3S818 Microcontroller Industrial Temperature Tape-and-reel LM3S818-EQN50-C2 ® Stellaris LM3S818 Microcontroller Extended Temperature ® ■ Software reset ■ Watchdog timer reset ■ Internal low drop-out (LDO) regulator output goes unregulated LM3S818-EQN50-C2T Stellaris LM3S818 Microcontroller Extended Temperature Tape-and-reel Development Kit Additional Features ■ Programmable clock source control ■ Clock gating to individual peripherals for power savings ■ IEEE 1149.1-1990 compliant Test Access Port (TAP) controller ■ Debug access via JTAG and Serial Wire interfaces ■ Full JTAG boundary scan ® The Stellaris Family Development Kit provides the hardware and software tools that engineers need to begin development quickly. Ask your distributor for part number DK-LM3S818. See the website for the latest tools available. Package and Temperature Tools to begin development quickly ■ 48-pin RoHS-compliant LQFP package Texas Instruments, Inc. • 108 Wild Basin, Suite 350 • Austin, TX 78746 Main: +1-512-279-8800 • Fax: +1-512-279-8879 • http://www.luminarymicro.com Copyright © 2008-2009 Texas Instruments, Inc. All rights reserved. Stellaris and StellarisWare are registered trademarks of Texas Instruments. ARM and Thumb are registered trademarks and Cortex is a trademark of ARM Limited. Other names and brands may be claimed as the property of others. PB-LM3S818-02