LM3S801 is not recommended for new designs.
This product continues to be in production to support existing customers. Please consider one of these alternatives:
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Product details

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  • 32-bit ARM® Cortex™-M3 50-MHz processor core with System Timer (SysTick), integrated Nested Vectored Interrupt Controller (NVIC), Memory Protection Unit (MPU), and Thumb-2 instruction set

  • Full-featured debug solution with debug access via JTAG and Serial Wire interfaces, and IEEE 1149.1-1990 compliant Test Access Port (TAP) controller

  • 64 KB single-cycle flash and 8 KB single-cycle SRAM

  • 0-36 GPIOs (depending on configuration) with programmable control for GPIO interrupts and pad configuration

  • ARM FiRM-compliant Watchdog Timer ; plus three General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timers/counters and can be configured to operate independently

  • 10-bit Analog-to-Digital Converter (ADC) with analog input channels and a sample rate of samples/second

  • Two fully programmable 16C550-type UARTs

  • Synchronous Serial Interface (SSI), supporting operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces

  • Inter-Integrated Circuit (I2C) Interface, providing Standard (100 Kbps) and Fast (400 Kbps) transmission and support for sending and receiving data as either a master or a slave

  • Three integrated analog comparators configurable for output to drive an output pin or generate an interrupt

  • Three PWM generator blocks, each with one 16-bit counter, two PWM comparators, a PWM signal generator, a dead-band generator, and an interrupt selector

  • Quadrature Encoder Interface (QEI) featuring position integrator to track encoder position and velocity capture using built-in timer

  • Industrial and extended temperature RoHS-compliant 48-pin LQFP and 48-pin QFN package

  • 32-bit ARM® Cortex™-M3 50-MHz processor core with System Timer (SysTick), integrated Nested Vectored Interrupt Controller (NVIC), Memory Protection Unit (MPU), and Thumb-2 instruction set

  • Full-featured debug solution with debug access via JTAG and Serial Wire interfaces, and IEEE 1149.1-1990 compliant Test Access Port (TAP) controller

  • 64 KB single-cycle flash and 8 KB single-cycle SRAM

  • 0-36 GPIOs (depending on configuration) with programmable control for GPIO interrupts and pad configuration

  • ARM FiRM-compliant Watchdog Timer ; plus three General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timers/counters and can be configured to operate independently

  • 10-bit Analog-to-Digital Converter (ADC) with analog input channels and a sample rate of samples/second

  • Two fully programmable 16C550-type UARTs

  • Synchronous Serial Interface (SSI), supporting operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces

  • Inter-Integrated Circuit (I2C) Interface, providing Standard (100 Kbps) and Fast (400 Kbps) transmission and support for sending and receiving data as either a master or a slave

  • Three integrated analog comparators configurable for output to drive an output pin or generate an interrupt

  • Three PWM generator blocks, each with one 16-bit counter, two PWM comparators, a PWM signal generator, a dead-band generator, and an interrupt selector

  • Quadrature Encoder Interface (QEI) featuring position integrator to track encoder position and velocity capture using built-in timer

  • Industrial and extended temperature RoHS-compliant 48-pin LQFP and 48-pin QFN package

The Stellaris® LM3S801 microcontroller is based on the ARM® Cortex™-M3 controller core operating at up to 50 MHz, with 64 kB flash and 8 kB SRAM. The LM3S801 also features real-time industrial connectivity, with an SSI / SPI controller, an I2C interface, and 2 UARTs. The LM3S801 microcontroller also features advanced motion control features, including 6 motion-control PWM outputs with dead-band, a quadrature encoder input for precise position monitoring, and a fault protection input for low-latency shutdown. Finally, the LM3S801 microcontroller provides a 24-bit systick timer, 3 32-bit or 6 16-bit general-purpose timers, a watchdog timer, a low drop-out voltage regulator so that only one supply voltage is required, brown-out reset, power-on reset controller, and up to 36 GPIOs.

The Stellaris® LM3S801 microcontroller is based on the ARM® Cortex™-M3 controller core operating at up to 50 MHz, with 64 kB flash and 8 kB SRAM. The LM3S801 also features real-time industrial connectivity, with an SSI / SPI controller, an I2C interface, and 2 UARTs. The LM3S801 microcontroller also features advanced motion control features, including 6 motion-control PWM outputs with dead-band, a quadrature encoder input for precise position monitoring, and a fault protection input for low-latency shutdown. Finally, the LM3S801 microcontroller provides a 24-bit systick timer, 3 32-bit or 6 16-bit general-purpose timers, a watchdog timer, a low drop-out voltage regulator so that only one supply voltage is required, brown-out reset, power-on reset controller, and up to 36 GPIOs.

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Technical documentation

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Type Title Date
* Data sheet Stellaris LM3S801 Microcontroller Data Sheet datasheet (Rev. I) 15 Jul 2014
* Errata Stellaris LM3S Sandstorm-, Fury-, and DustDevil-Class Microcontrollers Errata 26 Jun 2014
* Errata ARM Cortex-M3 Errata (r1p0) 24 Oct 2008
Technical article 5 ways high-performance MCUs are reshaping the industry 12 Jul 2021
User guide SYS/BIOS (TI-RTOS Kernel) User's Guide (Rev. V) 01 Jun 2020
User guide TI-RTOS 2.20 User's Guide (Rev. M) 17 Jun 2016
User guide TI-RTOS 2.16 User's Guide (Rev. L) 22 Feb 2016
Application note Differences Among Stellaris® LM3S and Tiva™ C Series TM4C123x MCUs (Rev. E) 24 Sep 2013
User guide Stellaris Boot Loader User's Guide (SW-BOOTLDR-UG) (Rev. P) 19 Apr 2013
User guide Stellaris Graphics Library User's Guide (SW-GRL-UG) (Rev. P) 19 Apr 2013
User guide Stellaris Peripheral Driver Library User's Guide (SW-DRL-UG) (Rev. P) 19 Apr 2013
User guide StellarisWare Release Notes (SW-RLN) (Rev. Q) 19 Apr 2013
Application note System Design Guidelines for Stellaris® Microcontrollers   (Rev. B) 04 Feb 2013
Application note Using Execute, Write/Erase Flash Protection on Stellaris MCUs Using CCS (Rev. A) 15 Aug 2012
User guide StellarisWare Release Notes (SW-RLN) (Rev. N) 11 Dec 2011
User guide Cortex-M3/M4F Instruction Set Technical User's Manual (Rev. A) 23 Nov 2011
White paper Serial Wire Debug—Ideal for Microcontrollers 09 Sep 2010
More literature Stellaris LM3S801 Microcontroller Product Brief (Rev. B) 04 Nov 2009
More literature Stellaris Product Change Notice (PCN), Sept 2009 07 Sep 2009
Application note Clock Fail Detection for Stellaris LM3SX00 MCUs (AN01278) 07 Jul 2009
Application note Implementing RS-232 Flow Control on a Stellaris Microcontroller (AN01255) 07 Jul 2009
Application note Optimizing Code Performance and Size for Stellaris Microcontrollers (AN01265) 07 Jul 2009
Application note Programming the On-Chip Flash Memory in a Stellaris Microcontroller (AN01237) 07 Jul 2009
Application note Software UART for Stellaris Microcontrollers (AN01270) 07 Jul 2009
Application note Using Stellaris MCUs Internal Flash Memory to Emulate EEPROM (AN01267) 07 Jul 2009
Application note Using a 9-bit Software UART with Stellaris (AN01280) 07 Jul 2009
Application note Using the Stellaris Serial Flash Loader (AN01242) 07 Jul 2009
User guide Stellaris Peripheral Driver Library User's Guide (Deprecated Version) 29 Sep 2008
More literature LM3S801 RevC Product Change Notice (PCN), Dec 2007 20 Dec 2007
More literature LM3S801 RevC2 Product Change Notice (PCN), May 2007 04 May 2007
More literature LM3S801 RevC0 Product Change Notice (PCN), Oct 2006 06 Oct 2006

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

Stellaris LM3S801 48LQFP BSDL Model (Rev. A)

SPMM037A.ZIP (2 KB) - BSDL Model
Simulation model

Stellaris LM3S801 48LQFP IBIS Model (Rev. A)

SPMM038A.ZIP (251 KB) - IBIS Model
Simulation model

Stellaris LM3S801 48QFN BSDL Model

SPMM486.ZIP (2 KB) - BSDL Model
Simulation model

Stellaris LM3S801 48QFN IBIS Model

SPMM568.ZIP (253 KB) - IBIS Model
Package Pins Download
LQFP (PT) 48 View options

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