Usb Keyboard/ Device Controller

W81281 is a low cost, high integration single-chip Microcontroller with Universal Serial Bus (USB) Interface for keyboard application, it includes the core of Winbond 8-bit Microprocessor W78C52 which works on 6MHz. It implements a standard PC keyboard and enables connection to host system through low-speed (1.5Mhz) USB connection . It complies with USB Specification Revision 1.0 and HID Class Definition Revision 1.0. For Keyboard application, W81281 supports an 18 X 8 keyboard scan matrix, which allows suspend wake up, and also provides a port for PS/2 mouse. It consists of an 8051 compatible CPU core, a 6K-byte ROM, a 256-byte SRAM and three 16-bit programmable Timers W81281 supports one device address and five endpoints, one bi-directional endpoint for Control transfer and four unidirectional endpoints for Interrupt IN transfer. Through modification of firmware of W78C52, it CAN be used for multifunction device design, such as USB-IR receiver and any Slow-Speed (1.5Mhz) USB peripheral device controller. By Winbond Electronics Corp America
W81281 's PackagesW81281 's pdf datasheet



W81281 Pinout, Pinouts
W81281 pinout,Pin out
This is one package pinout of W81281,If you need more pinouts please download W81281's pdf datasheet.

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