Third generation USB 3.0 host controllers claim industry-leading transfer speed and low power consumption
The μPD720201 and μPD720202 devices make it easier for system designers to build electronic devices combining high-speed data transfer, compact size, and extended battery life.
The new host controllers add a new four-port product to the Renesas Electronics USB 3.0 product lineup and claim to deliver even faster transfer speeds, better power efficiency, and more compact size than the company’s previous versions of USB 3.0 host controllers.
The new μPD720201 andμPD720202 USB 3.0 host controllers offer improvements to the data transfer processing circuit to provide an increase in the effective data write speed of more than 40 percent from Renesas Electronics’ existing host controller products for peripheral devices such as USB 3.0 hard disks. This, combined with excellent read performance, results in an industry-leading high data transfer speed.
In addition to a technology implemented on existing products that reduces power consumption when the peripheral device is in the unconnected state, circuit improvements have been made to effectively suppress current leakage when in low-power mode. This has reduced power consumption in low-power mode to 4.5 mW, a reduction of 90 percent compared with Renesas Electronics’ existing products. This results in power consumption among the lowest in the industry, reduced standby power usage in laptop PCs and other mobile devices, and extended battery life.
The μPD720201 and the μPD720202 devices are equipped in an 8 mm square Quad Flat Non Lead (QFN) package and a 7 mm square QFN package, respectively, which are reductions in package size of approximately 50 percent from Renesas Electronics’ existing products.
In addition, the company’s existing host controllers use firmware stored in external serial flash ROM. The μPD720201 and μPD720202 devices now have a function that makes use of improvements to the PCI Express interface to allow downloading of firmware from the system software, such as the basic input/output system (BIOS). The ability to download the firmware from the system software eliminates the need for external serial flash ROM. This reduces the number of components required for incorporating a USB 3.0 function and enables a smaller mounting area.
Mass production is scheduled to begin in September 2011 with a combined production volume of 2,000,000 units per month.
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