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Texas Instruments

Stellaris » LM3S1918

Order Number Distributor Stock    
LM3S1918 Available Directly From Manufacturer QUOTE
Not Recommended For New Designs

The Stellaris® LM3S1918 microcontroller is based on the ARM® Cortex™-M3 controller core operating at 50 MHz, with 256 kB single-cycle flash, 64 kB single-cycle SRAM, a 24-bit Systick Timer, 4x 32-bit or 8x 16-bit general-purpose timers, a watchdog timer, two SSI / SPI controllers, two I2C interfaces, 2 UARTs, 2 analog comparators, a 10-bit analog-to-digital converter (ADC) with 8 input channels (+/- 1LSb of accuracy), a battery-backed hibernation module with RTC and 256 bytes of non-volatile state-saving memory, a low drop-out voltage regulator, brown-out reset, power-on reset controller, and up to 52 GPIOs.

Product Features

32-Bit RISC Performance

  • 32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded applications
  • 50-MHz operation with 32-bit ARM® Cortex™-M3 architecture
  • 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, with hardware-division and single-cycle-multiplication
  • Integrated Nested Vectored Interrupt Controller (NVIC) provides deterministic interrupt handling
  • 32 interrupts 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
  • 256 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
  • 64 KB single-cycle SRAM
Flexible Timer Capability
  • Four general-purpose timers, each configurable as one 32-bit or two 16-bit timers
  • Real-Time Clock (RTC) capability
  • 24-bit system (SysTick) timer
  • 32-bit watchdog timer
General-Purpose Timers
  • Four General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timer/counters. Each GPTM can be configured to operate independently as timers or event counters (eight total): as a single 32-bit timer (four total), as one 32-bit Real-Time Clock (RTC) to event capture, for Pulse Width Modulation (PWM), or to trigger analog-to-digital conversions
  • 32-bit Timer modes
    • Programmable one-shot timer
    • Programmable periodic timer
    • Real-Time Clock when using an external 32.768-KHz clock as the input
    • User-enabled stalling in periodic and one-shot mode when the controller asserts the CPU Halt flag during debug
    • ADC event trigger
  • 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
    • ADC event trigger
  • 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
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
  • User-enabled stalling when the controller asserts the CPU Halt flag during debug
Serial Interfaces
  • Two synchronous serial interfaces (SSI) with master and slave modes for SPI, MICROWIRE, or TI synchronous serial
  • Two I2C interfaces (master and slave)
  • Two fully programmable 16C550-type UARTs with IrDA support
Synchronous Serial Interface (SSI)
  • Two SSI modules, each with the following features:
  • 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
  • Two fully programmable 16C550-type UARTs with IrDA support
  • 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-to-Digital Converter (ADC)
  • Single- and differential-input configurations
  • Eight 10-bit channels (inputs) when used as single-ended inputs
  • Sample rate of 500 thousand 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, or GPIO)
  • On-chip temperature sensor
Analog Comparators
  • Two independent integrated analog comparators
  • 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
Inter-Integrated Circuit (I2C) Interface
  • Two I2C modules
  • 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
  • 17-52 GPIOs, depending on configuration
  • 5-V-tolerant input/outputs
  • Programmable interrupt generation as either edge-triggered or level-sensitive
  • Fast toggle capable of a change every two clock cycles
  • Bit masking in both read and write operations through address lines
  • Can initiate an ADC sample sequence
  • Programmable drive strength and slew-rate control
  • 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
  • On-chip Low Drop-Out (LDO) voltage regulator, with programmable output user-adjustable from 2.25 V to 2.75 V
  • Battery-backed hibernation module with real-time clock and 256-bytes of non-volatile memory
  • 3.3-V supply brown-out detection
  • Hibernation module handles the power-up/down 3.3 V sequencing and control for the core digital logic and analog circuits
  • 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
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 low 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
  • 100-pin RoHS-compliant LQFP package
    • Industrial-range (-40°C to +85°C)
    • Extended-range (-40°C to +105°C)
  • 108-ball RoHS-compliant BGA package
    • Industrial-range (-40°C to +85°C)

Development Kits etc.

Provider Tool name Order Number
Texas Instruments Stellaris® LM3S9B90 Kit with CodeSourcery G++ EKC-LM3S9B90

IDEs (Compilers etc.)

Provider Tool name Order Number
Keil RealView® MDK for ARM MDK-ARM
Keil RealView® MDK for ARM Basic MDK-ARM-B
IAR Systems Embedded Workbench for ARM EWARM
Keil ARM Development Studio 5 (DS-5) Application Edition Node... DS5AE-KT-30000
Keil ARM Development Studio 5 (DS-5) Application Edition... DS5AE-KT-40000
Keil ARM Development Studio 5 (DS-5) Linux Edition Node Locked... DS5LE-KT-30000
IAR Systems Embedded Workbench for ARM - Baseline EWARM-BL
Keil RealView Development Suite 4.1 Windows Node Locked License RS410-KT-30000
Keil RealView 4.1 Professional Development Suite Windows... RS41P-KT-40000
CodeSourcery Sourcery G++ for ARM EABI SGPP_ARM_EABI_s10
CodeSourcery Sourcery G++ for ARM uClinux SGPP_ARM_uC_s10
CodeSourcery Sourcery G++ for ARM GNU/Linux SGPP_ARM_LNX_s10
Keil RealView 4.1 Professional Development Suite Windows Node... RS41P-KT-30000
Texas Instruments Code Composer Studio v4.0 - Microcontroller Edition TMDSCCS-MCUF01
Texas Instruments Code Composer Studio v6.0 - Floating 1 User TMDSCCS-ALLF01

Debuggers / Simulators

Provider Tool name Order Number
Micrium uC/Probe PRB-WINX-000000-P-P1-A


Provider Tool name Order Number
Texas Instruments XDS100v2 USB JTAG Emulator (14-pin TI connector) TMDSEMU100V2U-14T

JTAG Probes

Provider Tool name Order Number
Tag-Connect Black Sphere Debugger Black-Sphere-Dbg
IAR Systems J-Trace for ARM Cortex-M3 jlink-ARM Cortex-M3
SEGGER Microcontroller J-Trace for Cortex-M3 JTAG emulator 8.13.00 J-TRACE FOR CORTEX-M3
NXP Semiconductors J-Link JTAG OM11031
SEGGER Microcontroller J-Link ULTRA 8.16.00 J-LINK ULTRA
SEGGER Microcontroller J-Link 8.08.00 J-LINK
SEGGER Microcontroller J-Link 5V Adapter 8.08.15
SEGGER Microcontroller J-Link PRO 8.12.00 J-LINK PRO
Abatron AG High-speed BDM/JTAG Interface for GNU Debugger BDI3000/A & bdiGDB Firmware
Keil ULINKpro Debug and Trace Unit ULINKpro
SEGGER Microcontroller J-Link EDU 8.08.90 J-LINK EDU
Texas Instruments XDS100v2 JTAG Emulator (20-pin compact TI connector) TMDSEMU100V2U-20T

Operating Systems

Provider Tool name Order Number
Micrium µC/OS-III KRN-K3XX-PKG000-P-P1-A
CMX Systems CMX-Tiny+ RTOS CMX-Tiny
CMX Systems CMX-RTX, preemptive, multi-tasking RTOS CMX-RTX
SEGGER Microcontroller embOS (Real Time Operating System) 1.xx.xx
Micro Digital Inc. smx® Real Time Kernel for ARM and Cortex smxARM
Micro Digital Inc. SMX.Blaze™ blaze

Stacks/Protocols/File systems

Provider Tool name Order Number
CMX Systems CMX TCP/IP is a full-featured and fast TCP/IP stack CMX-TCP/IP
CMX Systems CMX-MicroNet is a very small and fast TCP/IP stack CMX-MicroNet
CMX Systems CMX-FFS is a Flash File System FFS
Micro Digital Inc. smxWiFi™ WiFi Stack smxWiFi
Micro Digital Inc. smxUSBD™ USB Device Stack smxUSBD
Micro Digital Inc. smxUSBO™ USB OTG Stack smxUSBO
Micro Digital Inc. smxUSBH™ USB Host Stack smxUSBH
Micro Digital Inc. smxFFS™ Flash File System smxFFS
Micro Digital Inc. smxFS™ Portable File System smxFS
Interniche Technologies FAT File System FatFile
Interniche Technologies NicheStack HTTP Server NicheStack HTTP
Interniche Technologies NicheStack SNMP NicheStack SNMP
Interniche Technologies NicheStack SSL/TLS NicheStack SSL
Interniche Technologies NicheStack IPSec IPSec
Interniche Technologies NicheStack RTP/RTCP NicheStack RTP
Interniche Technologies Gateway protocols Various
Interniche Technologies NicheStack IPv4 IPv4
Micro Digital Inc. smxNS™ TCP/IP Stack smxNS
SEGGER Microcontroller emWin (Graphics Software and GUI) 3.xx.xx
SEGGER Microcontroller emUSB (Embedded USB Stack) 9.xx.xx
SEGGER Microcontroller emFile (Embedded File System) 2.xx.xx
SEGGER Microcontroller embOS/IP (TCP/IP Stack) 7.xx.xx
HCC Embedded Fail-safe File Systems FFS
HCC Embedded MISRA Compliant TCP/IPv4 & IPv6 TCPIP
HCC Embedded Smart-meter File System SMFS
HCC Embedded Verifiable SSL/TLS SSLTLS
HCC Embedded eTaskSync Verifiable Scheduler ETASKSYNC
HCC Embedded Fail-safe Flash Translation Layer FTL
HCC Embedded USB Device, Host and OTG EUSB
HCC Embedded Fail-safe Bootloader BL
Interniche Technologies NicheStack Dual IPv4/IPv6 IPv4/IPv6
Interniche Technologies NicheStack IPv6 IPv6

Reference Designs

Provider Tool name Order Number
Texas Instruments Stellaris® Stepper Motor Reference Design Kit RDK-STEPPER
Texas Instruments Stellaris® AC Induction Motor Reference Design Kit RDK-ACIM


Provider Tool name Order Number
SEGGER Microcontroller Flasher ARM 5.07.01 FLASHER ARM

Software Design

Provider Tool name Order Number
IAR Systems IAR visualSTATE VS

Other Software Tools

Provider Tool name Order Number
SEGGER Microcontroller J-Flash 8.08.02
SEGGER Microcontroller J-Link RDI 8.08.03
SEGGER Microcontroller J-Link Flash Breakpoint 8.08.04
SEGGER Microcontroller J-Link GDB Server 8.08.08
SEGGER Microcontroller J-Link Flash Download 8.08.05
Micro Digital Inc. GoFast® Floating Point Library GoFast
Micro Digital Inc. Prism GUI Products smxPrism
Micro Digital Inc. PEG GUI Products smxPEG

General Accessories

Provider Tool name Order Number
SEGGER Microcontroller J-Link ARM-14 8.08.01 J-LINK ARM-14
SEGGER Microcontroller JTAG Isolator 8.07.00 JTAG ISOLATOR
SEGGER Microcontroller J-Link 19-Pin Cortex-M Adapter 8.06.02 J-LINK 19-PIN CORTEX-M ADAPTER
SEGGER Microcontroller J-Link 9-Pin Cortex-M Adapter 8.06.00 J-LINK 9-PIN CORTEX-M ADAPTER