LM3S6938 Luminary Micro, Inc, LM3S6938 Datasheet - Page 23

• Manufacturer Part Number: LM3S6938
• Description: Lm3s6938 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

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July 25, 2008
Architectural Overview
The Luminary Micro Stellaris
controllers—brings high-performance 32-bit computing to cost-sensitive embedded microcontroller
applications. These pioneering parts deliver customers 32-bit performance at a cost equivalent to
legacy 8- and 16-bit devices, all in a package with a small footprint.
The Stellaris
the device into cost-conscious applications requiring significant control-processing and connectivity
capabilities. The Stellaris
(MAC) and Physical (PHY) layer, 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 LM3S6938 microcontroller is targeted for industrial applications, including remote monitoring,
electronic point-of-sale machines, test and measurement equipment, network appliances and
switches, factory automation, HVAC and building control, gaming equipment, motion control, medical
instrumentation, and fire and security.
For applications requiring extreme conservation of power, the LM3S6938 microcontroller features
a Battery-backed Hibernation module to efficiently power down the LM3S6938 to a low-power state
during extended periods of inactivity. With a power-up/power-down sequencer, a continuous time
counter (RTC), a pair of match registers, an APB interface to the system bus, and dedicated
non-volatile memory, the Hibernation module positions the LM3S6938 microcontroller perfectly for
battery applications.
In addition, the LM3S6938 microcontroller offers the advantages of ARM's widely available
development tools, System-on-Chip (SoC) infrastructure IP applications, and a large user community.
Additionally, the microcontroller uses ARM's Thumb®-compatible Thumb-2 instruction set to reduce
memory requirements and, thereby, cost. Finally, the LM3S6938 microcontroller is code-compatible
to all members of the extensive Stellaris
needs.
Luminary Micro offers a complete solution to get to market quickly, with evaluation and development
boards, white papers and application notes, an easy-to-use peripheral driver library, and a strong
support, sales, and distributor network. See “Ordering and Contact Information” on page 539 for
ordering information for Stellaris
Product Features
The LM3S6938 microcontroller includes the following product features:
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32-Bit RISC Performance
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32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded
applications
System timer (SysTick), providing a simple, 24-bit clear-on-write, decrementing, wrap-on-zero
counter with a flexible control mechanism
Thumb®-compatible Thumb-2-only instruction set processor core for high code density
50-MHz operation
Hardware-division and single-cycle-multiplication
®
family offers efficient performance and extensive integration, favorably positioning
®
LM3S6000 series combines both a 10/100 Ethernet Media Access Control
®
family of microcontrollers—the first ARM® Cortex™-M3 based
®
family devices.
Preliminary
®
family; providing flexibility to fit our customers' precise
LM3S6938 Microcontroller
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