The Stellaris® LM3S3634 microcontroller is based on the ARM® Cortex™-M3 controller core operating at up to 50 MHz, with 128 kB flash, 32 kB SRAM, a 32-ch DMA, and ROM preloaded with the StellarisWare Driver Library and BootLoader. The LM3S3634 also features real-time industrial connectivity, with USB 2.0 Full Speed Host/Device, an SSI / SPI controller, 2 I2C interfaces, and 2 UARTs. The microcontroller also features intelligent analog capability, including 6 channels of highly accurate 10-bit analog-to-digital conversion - with the ability to sample at speeds of 500K samples per second. Finally, the LM3S3634 microcontroller provides a 24-bit systick timer, 3 32-bit or 6 16-bit general-purpose timers, a watchdog timer, a battery-backed hibernation module with RTC and 256 bytes of non-volatile state-saving memory, a low drop-out voltage regulator so that only one supply voltage is required, brown-out reset, power-on reset controller, and up to 33 GPIOs.
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
128 KB single-cycle flash and 32 KB single-cycle SRAM
Internal ROM loaded with StellarisWare® software
Lower-power battery-backed Hibernation module with Real-Time Clock
ARM PrimeCell® 32-channel configurable μDMA controller
1-33 GPIOs (depending on configuration) with programmable control for GPIO interrupts and pad configuration
Three General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timers and can be configured to operate independently
ARM FiRM-compliant Watchdog Timer
10-bit Analog-to-Digital Converter (ADC) with eight analog input channels and a sample rate of 500 thousand samples/second
Two fully programmable 16C550-type UARTs with IrDA support
Synchronous Serial Interface (SSI), supporting operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces
Two Inter-Integrated Circuit (I2C) Interface modules, providing Standard (100 Kbps) and Fast (400 Kbps) transmission and support for sending and receiving data as either a master or a slave
Universal Serial Bus (USB) Controller with USB 2.0 full-speed (12 Mbps) and low-speed (1.5 Mbps) operation, 8 endpoints, and USB Host or Device mode
On-chip Low Drop-Out (LDO) voltage regulator, with programmable output user-adjustable from 2.25 V to 2.75 V
