LM3S317 Luminary Micro, Inc, LM3S317 Datasheet - Page 20
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LM3S317
Manufacturer Part Number
LM3S317
Description
Lm3s317 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S317.pdf
(376 pages)
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Architectural Overview
1
1.1
20
Architectural Overview
The Luminary Micro Stellaris® family of microcontrollers—the first ARM® Cortex™-M3 based
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 LM3S317 controller in the Stellaris family offers the advantages of ARM’s widely available
development tools, System-on-Chip (SoC) infrastructure IP applications, and a large user
community. Additionally, the controller uses ARM’s Thumb®-compatible Thumb-2 instruction set
to reduce memory requirements and, thereby, cost.
Luminary Micro offers a complete solution to get to market quickly, with a customer development
board, white papers and application notes, and a strong support, sales, and distributor network.
Product Features
The LM3S317 microcontroller includes the following product features:
32-Bit RISC Performance
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Internal Memory
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General-Purpose Timers
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32-bit ARM® Cortex™-M3 v7M architecture optimized for small-footprint embedded
applications
Thumb®-compatible Thumb-2-only instruction set processor core for high code density
25-MHz operation
Hardware-division and single-cycle-multiplication
Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt
handling
25 interrupts with eight priority levels
Memory protection unit (MPU) provides a privileged mode for protected operating system
functionality
Unaligned data access, enabling data to be efficiently packed into memory
Atomic bit manipulation (bit-banding) delivers maximum memory utilization and
streamlined peripheral control
16-KB single-cycle flash
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•
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4-KB single-cycle SRAM
Three timers, each of which can be configured: as a single 32-bit timer, as two 16-bit
timers, or to initiate an ADC event
32-bit Timer modes:
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User-managed flash block protection on a 2-KB block basis
User-managed flash data programming
User-defined and managed flash-protection block
Programmable one-shot timer
Programmable periodic timer
Real-Time Clock when using an external 32.768-KHz clock as the input
Preliminary
February 6, 2007
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