Non-volatile RAM module swaps out batteries for supercaps
Systems often need some form of non-volatile RAM to protect against memory losses caused by system power interruption or loss. Battery-backed RAM has been the most common form of high-density non-volatile memory, but it has drawbacks, such as long charging times for the battery, a large size, a relatively low-temperature operating environment, requiring low-temperature operation, and limited number of cycles.
AgigA Tech’s AGIGARAM non-volatile system technology provides memory capacity ranging from 4MB to 2GB with transfer rates equivalent to DRAMs by combining synchronous DRAM with flash memory. During normal operation the AGIGARAM relies on its SDRAM, but if system power is lost, the AGIGARAM automatically saves the SDRAM data to NAND Flash memory using the energy stored in its internal supercapacitors.
AGIGARAM includes the BALI and CAPRI product families. BALI comes in capacities ranging from 4-MB to 64-MB densities, incorporates high-speed 100MHz SDRAM with 200MB/sec peak transfers, requires 3.3V VCC for 4MB to 32MB or 5.0V VCC for 64MB, and operates over a 0-70°C operating range. It’s packaged in a 200-pin SO-DIMM or a mezzanine card. Pricing is about $4/MB. The CAPRI comes in sizes ranging from 256MB to 2GB and uses a much higher speed DDR-800 interface. Pricing is less than $1/MB.















