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In 2009 Atmel announced the AT91sam3u line of flash-based microcontrollers based on the Cortex-M3 processor, as a higher end evolution of the SAM7 microcontroller products. They have a top clock speed in the range of 100 MHz, and come in a variety of flash sizes. At this writing (Summer 2009) these parts are still sampling, and a development board has recently been made available.
In December 2009, the AT91sam3s line was announced. This features several enhancements for lower power operation and [[bill of materials]] cost reduction. Also, the 64-pin parts are pin-compatible with AT91sam7 chips, facilitating upgrades of existing product designs.
Market watchers observe that these CM3 products are competition for Atmel's own [[AVR32]] UC3A products. Both are microcontrollers with largely identical peripherals and other hardware technology, flash-based, similar clock speeds, and with dense 16/32 bit RISC instruction sets. ▼
▲Market watchers observe that these CM3 products are competition for Atmel's own [[AVR32]] UC3A products. Both are microcontrollers with largely identical peripherals and other hardware technology, flash-based, similar clock speeds, and with dense 16/32 bit RISC instruction sets.
=== ARM9 Based Application Processors ===
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