USB 3.0 host controllers offer ‘industry leading’ transfer speed and low power consumption
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Renesas Electronics has announced two new SuperSpeed usb 3.0 xHCI host controllers for electronic devices such as pcs and digital tvs that feature faster effective data transfer speeds and reduced power consumption in low power mode.
According to the company, 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.
"Improvements to the data transfer processing circuit provide an increase in the effective data write speed of more than 40% from our existing host controller products for peripheral devices such as usb 3.0 hard disks," said Yukihiko Matsuda, associate general manager, industry & network business division, Renesas. "This, combined with excellent read performance, results in an industry leading high data transfer speed."
According to Matsuda, 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 suppress current leakage when in low power mode. Renesas claims this has reduced power consumption in low power mode to 4.5mW, a reduction of 90% compared with the company's existing products.
The µPD720201 and the µPD720202 devices are equipped in an 8mm square QFN package and a 7mm square QFN package, respectively. In addition, they now have a function that makes use of improvements to the PCI Express interface to allow downloading of firmware from the system software to reduce the number of components required and therefore enable a smaller mounting area.
