LM3S1J11-IQC50-C3 - Brand New Texas Instruments Microcontrollers
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Product Details
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[ ** Luminary Micro, Inc. ** ]
Architectural Overview
The Luminary Micro Stellaris™ family of microcontrollers—the first ARM® Cortex™-M3 based controllers—brings high-performance 32-bit computing to cost- sensitive embedded microcontroller applications. These pioneering parts deliver customers 32-bit performance at a cost equivalent to legacy 8- and 16-bit devices, all in a package with a small footprint.
Product Features
The LM3S101 microcontroller includes the following product features:
■ 32-Bit RISC Performance
– 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
– 20-MHz operation
– Hardware-division and single-cycle-multiplication
– Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt handling
– 14 interrupts with eight priority levels
– Unaligned data access, enabling data to be efficiently packed into memory
– Atomic bit manipulation (bit-banding) delivers maximum memory utilization and streamlined peripheral control
■ Internal Memory
– 8 KB single-cycle flash
• User-managed flash block protection on a 2-KB block basis
• User-managed flash data programming
• User-defined and managed flash-protection block
– 2 KB single-cycle SRAM
■ General-Purpose Timers
– Two timers, each of which can be configured as a single 32-bit timer or as two 16-bit timers
– 32-bit Timer modes:
• Programmable one-shot timer
• Programmable periodic timer
• Real-Time Clock when using an external 32-KHz clock as the input
• User-enabled stalling in periodic and one-shot mode when the controller asserts the CPU Halt flag during debug
– 16-bit Timer modes:
• General-purpose timer function with an 8-bit prescaler
• Programmable one-shot timer
• Programmable periodic timer
• User-enabled stalling when the controller asserts CPU Halt flag during debug
– 16-bit Input Capture modes:
• Input edge count capture
• Input edge time capture
– 16-bit PWM mode:
• Simple PWM mode with software-programmable output inversion of the PWM signal
■ ARM FiRM-compliant Watchdog Timer
– 32-bit down counter with a programmable load 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
– ARM PrimeCell®-compliant peripheral and cell identification registers
– User-enabled stalling when the controller asserts the CPU Halt flag during debug
■ Synchronous Serial Interface (SSI)
– 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, National Semiconductor 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
– Fully programmable 16C550-type UART
– Separate 16x8 transmit (TX) and 16x12 receive (RX) FIFOs to reduce CPU interrupt service loading
– Programmable baud-rate generator with fractional divider
– Programmable FIFO length, including 1-byte deep operation providing conventional double-buffered interface
– 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
■ Analog Comparators
– Two independent integrated analog comparators
– Configurable for output to drive an output pin or generate an interrupt
– Compare external pin input to external pin input or to internal programmable voltage reference
■ GPIOs
– 2 to 18 GPIOs, depending on configuration
– Programmable interrupt generation as either edge-triggered or level- sensitive
– Bit masking in both read and write operations through address lines
– Programmable control for GPIO pad configuration:
• Weak pull-up or pull-down resistors
• 2-mA, 4-mA, and 8-mA pad drive
• Slew rate control for the 8-mA drive
• Open drain enables
• Digital input enables
■ Power
– 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 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 brownout detection and reporting via interrupt or reset
■ Flexible Reset Sources
– Power-on reset (POR)
– Reset pin assertion
– Brown-out (BOR) detector alerts to system power drops
– Software reset
– Watchdog timer reset
– Internal linear drop-out (LDO) regulator output goes unregulated
■ Additional Features
– Six reset sources
– 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
■ Package
– 28-pin RoHS-compliant SOIC
– Commercial and industrial operating temperaturesTarget Applications
■ Factory automation and control
■ Industrial control power devices
■ Building and home automation -
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