An overview of Stellaris MCUs from Texas Instruments

An overview of Stellaris MCUs from Texas Instruments

Texas Instruments’ 32-bit Stellaris MCUs are all based on an ARM Cortex M3 core and then there are versions for many applications. There are 181 variations on that theme. Here is an overview of what you can get with these splendid microcontrollers.

• The Stellaris LM3S1000 series features a battery-backed hibernation module that includes a real-time clock, 256 bytes of battery-backed memory, low-battery detection, and a hibernate mode that can wake on a real-time clock match, external interrupt, or low battery. In hibernate mode with real-time clock, the LM3S1000 MCUs need just 16 µA, and a standard CR2032 watch battery can support hibernate mode for over 3 years. They run at up to 60 MHz and have up to 256 Kbytes of single-cycle flash, 32 Kbytes of single-cycle SRAM, and 8-channel 10-bit A/D converters. They take 34 µA in hibernate mode with real-time clock on and 56 mA in full operation, and they use a 3.0 to 3.6-V supply.

• The LM3S3000 series features USB 2.0 Full Speed On-The-Go (OTG), Host, and Device and 16 to 256 Kbytes of flash and 8 to 64 Kbytes of RAM. The 50-MHz devices have 10-bit A/D converters, DMA, and a precision oscillator.

• The 60-MHz LM3S5000 series has one or two CAN interfaces combined with USB 2.0 Full Speed OTG, Host, and Device, 256 Kbytes of flash, and 96 Kbytes of RAM. The devices have up to two 16-input 10-bit A/Ds with 1-Msample/s speed, synchronous serial interface (SSI) modules, two quadrature encoder interface modules, and eight PWM channels.

• The LM3S9000 series features a combination of 10/100 Ethernet MAC/PHY, USB On-The-Go/Host/Device, two CAN modules, an Interchip sound (I2 S) interface, and dual A/D converters. The MCUs have 128 or 256 Kbytes of flash and up to 96 Kbytes of RAM, DMA, four PWM generator blocks, capture and compare, an 8/16/32-bit dedicated parallel bus, I2 C, and two quadrature encoder interface modules featuring position integrator to track encoder position and velocity capture using a built-in timer.