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USB controller packs software to connect mouse, keyboard

Posted: 29 Aug 2008 ?? ?Print Version ?Bookmark and Share

Keywords:USB controller? USB software? mouse connection?


Seiko Epson Corp. has developed what it claims to be Japan's first USB controller LSI that includes dedicated software for connecting a mouse or keyboard.

As interface tools that are very inexpensive and easy-to-use, the mouse and keyboard are increasingly being used with embedded devices other than PCs. However, before connection between a mouse or keyboard and an embedded device can actually be achieved, developers must deal with issues including USB know-how, USB software development as well as inexpensive CPUs in the 8bit and 16bit class that are not equipped with USB host functions.

Epson's S1R72U01 incorporates all the USB software to enable connection with a mouse or keyboard in the chip, making it unnecessary for developers to have any knowledge at all about USB. Moreover, the product is able to connect with and control inexpensive CPUs in the 8bit and 16bit class and allows quick and easy connection with a mouse or keyboard and embedded devices.

The device features UART serial interface, which allows for easy connection with CPU. The S1R72U01 requires a power supply voltage of 3- to 5.5V and with an operating temperature range rated at -40C to +85C.

In addition, the S1R72U01 is equipped with 1 USB host port, USB software and USB host stack.

The device includes 12MHz and 24MHz crystal oscillator and ceramic resonator. It also supports full-speed mode (12Mbit/s) and low-speed mode (1.5Mbit/s), offers host termination function and VBUS power supply.

Samples of S1R72U01 are now shipping and are housed in 7mm x 7mm 48-pin QFN or 9mm x 9mm QFP 48-pin packages.

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