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Lowest power 32bit flash micro yet
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02/04/2007
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With power consumption as low as 1.65mW/DMIPS, the AVR32 UC3A series from Atmel is said to be the lower power 32bit flash microcontroller currently available.
Targeted at networking and pc centric embedded applications -- and at portable devices in particular – the series has 512kbyte of flash, an embedded 10/100 Ethernet MAC, a full speed USB 2.0 with On the Go capability and an sram/sdram external bus interface.
The first devices available are the AT32UC3A0512 and AT32UC3A1512, which deliver 80 Dhrystone MIPS at 66MHz and consume 40mA from a 3.3V supply.
The three stage pipeline Harvard architecture is designed specifically to optimise instruction fetches from on chip flash. According to Atmel, it is the first core in the industry to integrate single cycle read/write sram with a direct interface to the cpu that bypasses the system bus to achieve faster execution, cycle determinism and lower power consumption.
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Author
Graham Pitcher
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