8-bit MCUs feature fast 8-channel event system, 4-channel DMA
Devices handle up to eight zero-latency events simultaneously without CPU intervention
With an event response time of 31.25 to 62.5 ns, the ATXMEGAxxxx microcontrollers are said to be 80 times quicker than other 8-bit MCUs. They consume 100 nA in sleep mode with full SRAM retention and can wake up in 5 µs. The seven versions of the ICs have 64 to 256 Kbytes of flash and are said to be the only 8-bit MCUs with 32 general-purpose registers and support for 16- and 32-bit arithmetic.
They handle up to 256-Mbit/s data transfers and eight simultaneous events in idle sleep mode, at 0 MIPS, drawing only 12 mA. The ICs allow autonomous peripheral-to-peripheral interaction to be triggered by various events and feature a four-channel DMA controller that can move data between any locations in the data memory space.
In a single clock cycle, the chips can feed two arbitrary registers to the ALU, do a requested operation, and write back the result to any register. The devices have two 8-channel 12-bit A/D converters, and six USARTs (one with IrDA modulation), as well as two I2 C/SMBus and two SPI interfaces. ($3.12 to $4.59 ea/prod qty — available now.)
Atmel, USA , San Jose , CA
Sales 408-441-0311
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