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LM3S3748 Datasheet, PDF (42/753 Pages) List of Unclassifed Manufacturers – Microcontroller | |||
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ARM Cortex-M3 Processor Core
2 ARM Cortex-M3 Processor Core
The ARM Cortex-M3 processor provides the core for a high-performance, low-cost platform that
meets the needs of minimal memory implementation, reduced pin count, and low power consumption,
while delivering outstanding computational performance and exceptional system response to
interrupts. Features include:
â Compact core.
â Thumb-2 instruction set, delivering the high-performance expected of an ARM core in the memory
size usually associated with 8- and 16-bit devices; typically in the range of a few kilobytes of
memory for microcontroller class applications.
â Rapid application execution through Harvard architecture characterized by separate buses for
instruction and data.
â Exceptional interrupt handling, by implementing the register manipulations required for handling
an interrupt in hardware.
â Deterministic, fast interrupt processing: always 12 cycles, or just 6 cycles with tail-chaining
â External non-maskable interrupt signal (NMI) available for immediate execution of NMI handler
for safety critical applications.
â Memory protection unit (MPU) to provide a privileged mode of operation for complex applications.
â Migration from the ARM7⢠processor family for better performance and power efficiency.
â Full-featured debug solution with a:
â Serial Wire JTAG Debug Port (SWJ-DP)
â Flash Patch and Breakpoint (FPB) unit for implementing breakpoints
â Data Watchpoint and Trigger (DWT) unit for implementing watchpoints, trigger resources,
and system profiling
â Instrumentation Trace Macrocell (ITM) for support of printf style debugging
â Trace Port Interface Unit (TPIU) for bridging to a Trace Port Analyzer
â Optimized for single-cycle flash usage
â Three sleep modes with clock gating for low power
â Single-cycle multiply instruction and hardware divide
â Atomic operations
â ARM Thumb2 mixed 16-/32-bit instruction set
â 1.25 DMIPS/MHz
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April 08, 2008
Preliminary
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