Embedded Systems/ARM Microprocessors
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The ARM architecture is a widely used 32-bit RISC processor architecture. In fact, the ARM family accounts for about 75% of all 32-bit CPUs, about 90% of all embedded 32-bit CPUs(Wikipedia: ARM architecture). ARM Limited licenses several popular microprocessor cores to many vendors. (ARM does not sell physical microprocessors). Originally ARM stood for Advanced RISC Machines.
Some cores offered by ARM:
- ARM7TDMI
- ARM9
- ARM11
Some examples of ARM based processors:
- Intel X-Scale (PXA-255 and PXA-270), used in Palm PDAs
- Philips LPC2000 family (ARM7TDMI-S core), LPC3000 family (ARM9 core)
- Atmel AT91SAM7 (ARM7TDMI core)
- ST Microelectronics STR710 (ARM7TDMI core)
- Freescale MCIMX27 series (ARM9 core)
The lowest-cost ARM processors (in the the LPC2000 series) have dropped below US$ 5 in ones, which is less than the cost of many 16-bit and 8-bit microprocessors.
