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ARM7 ™ Derivatives - Architectural Overview of the HighEnd 32-Bit Single-Chip Microcontrollers

The ARM7 ™ 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 lower 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.

Supported ARM cores

ARM7TDMI
ARM710T
ARM720T
ARM740T
ARM7EJ

Supported Derivatives by Universal Debug Engine

Analog Devices ADuC7019, ADuC7020, ADuC7021, ADuC7022, ADuC7024, ADuC7025, ADuC7026, ADuC7027
Atmel AT91M40, AT91SAM7, AT91FR40162
Cirrus Logic EP7309, EP7311, EP7312
Freescale PAC72x1, PAC72x2, MAC71x1, MAC71x2, MAC71x4, MAC71x5, MAC71x6, MAC7241, MAC7242
NXP LPC2104, LPC2105, LPC2106
NXP LPC2114, LPC2119, LPC2124, LPC2129, LPC2131, LPC2132, LPC2134, LPC2136, LPC2138
NXP LPC2141, LPC2142, LPC2144, LPC2146, LPC2148, LPC2194
NXP LPC2210, LPC2212, LPC2214, LPC2220, LPC2292, LPC2294
NXP LPC2364, LPC2366, LPC2368, LPC2378, LPC2387
NXP LPC2468, LPC2470, LPC2478
NXP LPC2880, LPC2888
NetSilicon NS7520
NET+15, NET+20, NET+40, NET+50
STMicroelectronics ST30F771, ST30F772, ST30F774
STMicroelectronics STR710 (ARM720T) , STR711 , STR712 , STR720 , STR730 , STR731
TexasInstruments TMS470R1A64, TMS470R1A128, TMS470R1A256, TMS470R1A288, TMS470R1A384
TexasInstruments TMS470R1B512, TMS470R1B768

ARM7 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

UDE - Universal Debug Engine

UDE - Universal Debug Engine - is a flexible debug platform with Multi-core debugging. This development workbench is available for Infineon’s 16-bit architecture SAB C16x, C166CBC, C166S V2, the 32-bit TriCore TC1766, TC1796 as well the ST10F16x, ST10F26x and ST10F280 architecture from STMicroelectronics, the ARM7, ARM9, PowerPC and XScale derivatives.

It lets you organize your projects, supports you while building applications and lets you run and test your software in a convenient and cost-efficient way. UDE represents a completely new debugger architecture and tool concept based on a customizable set of standard components and core specific add-ons.

JTAG is fully supported by UDE offering direct high-speed access to the MCUs internal units (registers, control unit...) and features like breakpoints, stepping in ROM/FLASH as well as complex trigger conditions without any external hardware or software resources. OCDS L2 and MCDS instruction trace capability is available for members of the TriCore family. ETM and ETB instruction trace is available for ARM derivatives. Target ROM monitor and Bootstrap loader / RAM monitor solutions for a flexible access via a wide variety of debug channels (ASC, SSC, 3-PIN, CAN) are available.

UDE MemTool as a part of UDE is designed for On-Chip and On-Board FLASH/OTP programming with microcontroller systems using SAB C16x, C166CBC, C166S-V2, XC16x, ST10, TriCore, ARM7, ARM9, PowerPC and XScale derivatives.

The UDE demo version within a Starterkit for ARM7 TDMI is available.

Trademarks

ARM, EmbeddedICE and Thumb are registered trademarks of ARM Limited. ARM7, ARM9 and Embedded Trace Macrocell, are trademarks of ARM Limited. ST is a registered trademark of companies belonging to the STMicroelectronics Group. All other brands or product names are the property of their respective holders.