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LM3S8971 Datasheet, PDF (24/577 Pages) List of Unclassifed Manufacturers – Microcontroller | |||
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Architectural Overview
â System timer (SysTick), providing a simple, 24-bit clear-on-write, decrementing, wrap-on-zero
counter with a flexible control mechanism
â Thumb®-compatible Thumb-2-only instruction set processor core for high code density
â 50-MHz operation
â Hardware-division and single-cycle-multiplication
â Integrated Nested Vectored Interrupt Controller (NVIC) providing deterministic interrupt
handling
â 34 interrupts with eight priority levels
â Memory protection unit (MPU), providing a privileged mode for protected operating system
functionality
â Unaligned data access, enabling data to be efficiently packed into memory
â Atomic bit manipulation (bit-banding), delivering maximum memory utilization and streamlined
peripheral control
â Internal Memory
â 256 KB single-cycle flash
⢠User-managed flash block protection on a 2-KB block basis
⢠User-managed flash data programming
⢠User-defined and managed flash-protection block
â 64 KB single-cycle SRAM
â General-Purpose Timers
â Four General-Purpose Timer Modules (GPTM), each of which provides two 16-bit
timer/counters. Each GPTM can be configured to operate independently as timers or event
counters: as a single 32-bit timer, as one 32-bit Real-Time Clock (RTC) to event capture, for
Pulse Width Modulation (PWM), or to trigger analog-to-digital conversions
â 32-bit Timer modes
⢠Programmable one-shot timer
⢠Programmable periodic timer
⢠Real-Time Clock when using an external 32.768-KHz clock as the input
⢠User-enabled stalling in periodic and one-shot mode when the controller asserts the CPU
Halt flag during debug
⢠ADC event trigger
â 16-bit Timer modes
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October 01, 2007
Preliminary
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