ARM9™ AT91RM9200, LPC3000, STR910 Microcontrollers - Architectural Overview of the 32-Bit Microcontroller with ETM, ETB, Linux

ARM Connected The ARM9™ embedded microcontroller core is a member of the Advanced RISC Machines (ARM®) family of general purpose 32-bit microprocessors, which offer high performance and very low power consumption. Its outstanding feature is the 16-bit Thumb® subset of the most commonly used 32-bit instructions. These are expanded at run time with no degradation of system performance. This gives 16-bit code density (saving memory area and cost) coupled with 32-bit processor performance.

The ARM architecture is based on Reduced Instruction Set Computer (RISC) principles, and the instruction set and related decode mechanism are much simpler than those of microprogrammed Complex Instruction Set Computers. This simplicity results in a high instruction throughput and impressive real-time interrupt response from a small and cost-effective chip. 

Pipelining is employed so that all parts of the processing and memory systems can operate continuously. Typically, while one instruction is being executed, its successor is being decoded, and a third instruction is being fetched from memory.

The ARM memory interface has been designed to allow the performance potential to be realized without incurring high costs in the memory system. Speed-critical control signals are pipelined to allow system control functions to be implemented in standard low-power logic, and these control signals facilitate the exploitation of the fast local access modes offered by industry standard dynamic RAMs.

UDE - Universal Debug Engine with ETM, ETB, Linux support - Debugger and Emulator for ARM9

UDE - Universal Debug Engine - is a flexible debug and emulator platform with Multi-core debugging.

Special feature support:

The UDE demo version within a Starterkit for ARM9 is available.

Supported ARM cores

  • ARM9TDMI
  • ARM920T
  • ARM922T
  • ARM926EJ
  • ARM940T
  • ARM946E
  • ARM966E
  • ARM968E

Supported Microcontrollers by Universal Debug Engine

  • Atmel ARM9 AT91RM9200
  • Atmel ARM9 AT91SAM9260, AT91SAM9261, AT91SAM9263, AT91SAM9R64, AT91SAM9RL64, AT91SAM9XE128, AT91SAM9XE256, AT91SAM9XE512
  • Cirrus Logic ARM9 EP9301, EP9302, EP9307, EP0312, EP9315
  • Freescale® ARM9 MC9328MX1 i.MX1, MC9328MX21S i.MX21S,  MC94MX21 i.MX21, i.MX25, i.MX27
  • Hilscher ARM9 NetX10, NetX50, NetX100, NetX500
  • Philips/NXP LPC3180
  • NEC Ertec200, Ertec400
  • NetSilicon NS9360, NS9750, NS9775
  • NXP ARM9 LH7A400N0, LH7A404N0
  • NXP ARM9 LPC2915, LPC2917, LPC2919
  • NXP ARM9 LPC2921, LPC2923, LPC2924, LPC2927, LPC2929
  • NXP ARM9 LPC2930, LPC2939
  • NXP ARM9 LPC3180
  • NXP ARM9 LPC3220, LPC3230, LPC3240, LPC3250
  • STMicroelectronics® ARM9 STR910, STR911, STR912
  • TexasInstruments ARM9 OMAP5912

ARM9 TDMI ® Architecture Feature Overview

  • 32/16-bit RISC architecture ( ARM v4T )
  • 32-bit ARM instruction set for maximum performance and flexibility
  • 16-bit Thumb instruction set for increased code density
  • Unified bus interface, 32-bit data bus carries both instructions and data
  • 8-, 16-, and 32-bit Data Types
  • Three-stage pipeline
  • 4GBytes Linear Address Space
  • 32-bit ALU and high-performance multiplier
  • Very small die size and low power consumption
  • Fully static operation
  • Coprocessor interface
  • Extensive debug facilities:
    • EmbeddedICE-RT real-time debug unit
    • On-chip JTAG interface unit
    • Interface for direct connection to Embedded Trace Macrocell (ETM)
  • Very Low Power Consumption: Industry-leader in MIPS/Watt
Trademarks: ARM, EmbeddedICE and Thumb are registered trademarks of ARM Limited. ARM7, ARM9 and Embedded Trace Macrocell, are trademarks of ARM Limited. All other brands or product names are the property of their respective holders.