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Product category: Microprocessors, Microcontrollers and DSPs
News Release from: Luminary Micro | Subject: Stellaris microcontrollers
Edited by the Electronicstalk Editorial Team on 17 March 2008

Ball-grid array package cuts package
size by 60%

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The 10 x 10mm package enables the use of fully-featured Stellaris microcontrollers in designs where board space is limited, such as motors with integrated control electronics.

Luminary Micro has released the nineteen new Stellaris ARM Cortex-M3-based microcontrollers, providing cost-effective and precise motion control support Luminary Micro has also released a small BGA (ball-grid array) package option with a space-saving 10mm x 10mm footprint and a new extended temperature option with a -40 to 105C operating temperature range

The new 108-BGA packages provide up to a 60% smaller footprint than current Stellaris-family devices available in a 100-pin LQFP package.

The 10 x 10mm package enables the use of fully-featured Stellaris microcontrollers in designs where board space is limited, such as motors with integrated control electronics.

Eighteen of the new Stellaris microcontrollers provide capable, cost-efficient entries into the product family.

These include six LM3S300/600/800 low pin count real-time MCU series family members, four LM3S1000 high pin count real-time MCU series family members, four LM3S2000 CAN-enabled MCU series family members and four LM3S6000 Ethernet-enabled MCU series members.

These entry-level MCUs provide single-cycle on-chip flash ranging from 16 to 256Kbyte, single-cycle on-chip SRAM ranging from 16Kbyte to 64Kbyte and include I2Cs, SPIs, UARTs, up to four flexible 32bit timers and up to eight channels of analogue-to-digital conversion.

The LM3S8971 provides a new option for precision motor control, with six motion-control capable PWMs, a CAN 2.0 A/B controller and an integrated 10/100 Ethernet MAC/PHY.

The recently released Brushless DC Motor Control Reference Design Kit (RDK-BLDC) features the new LM3S8971 and includes four-quadrant motor control for three-phase brushless DC motors rated at up to 36V and 60,000rev/min.

Both the extended temperature grade and current industrial temperature grade (-40 to +85C) options are available across the entire Stellaris family of microcontrollers.

The ARM Cortex-M3 processor, the microcontroller member of the ARM Cortex processor family, is at the heart of all Stellaris microcontrollers.

Designed for serious microcontroller applications, the Cortex-M3 core features highly deterministic, fast interrupt processing, as low as six cycles and never more than twelve cycles.

At the heart of the Cortex-M3 processor is a three-stage pipeline core, based on the Harvard architecture, incorporating features such as branch speculation, single-cycle multiply and hardware divide to deliver exceptional performance.

The Cortex-M3 implements the new Thumb-2 mixed 16/32bit instruction set architecture without mode switching, helping it to be 70% more efficient per MHz than an ARM7TDMI-S processor executing Thumb instructions and 35% more efficient than the ARM7TDMI-S processor executing ARM instructions, for the Dhrystone benchmark.

The Stellaris microcontroller family features a fully integrated 10/100 Ethernet, up to three integrated Bosch CAN 2.0 A/B controllers, three UARTs, two I2Cs and two synchronous serial interfaces (SSI).

Stellaris Ethernet-enabled devices combine both the media access control (MAC) and physical (PHY) layers, marking the first time that integrated connectivity is available with an ARM Cortex-M3 MCU and the only integrated 10/100 Ethernet MAC and PHY available in an ARM architecture MCU.

The integrated Ethernet features automatic MDI/MDI-X cross-over detection and several Ethernet-enabled Stellaris microcontrollers also include hardware-assisted support for synchronised industrial networks using the IEEE1588 Precision Time Protocol (PTP).

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