General Description
The eKK8011A/eKK8011B series are high performance CMOS microcontroller devices specially designed for keyboard encoder applications. These devices function both in USB and PS/2 interface environment. For PS/2 interface, it supports IBM PC AT and all compatible machines and provides a 16-character first-in-first-out buffer in which data is stored. For USB interface, it supports the USB standard request version 1.1 as well as HID class request version 1.1.

Features
■ USB Specification Compliance
    • Universal Serial Bus Specification Version 1.1
    • USB Device Class Definition for Human Interface Device (HID), Firmware Specification Version 1.1
■ Low cost : no external components required
■ Operating frequency: 6MHz
■ Phantom key detection
■ Support scan code Set 1, 2 and 3 for PS/2
■ Support HID Usage ID for USB
■ Support PC PS/2 and USB keyboard
■ Support USB Sleep Mode
■ Low power CMOS device technology
■ Internal pull-up resistor
■ Tri-state outputs for easy board application
■ Support Windows1 TM 95, 98, 2000, ME keys
■ Support multi-media or other special application keyboard encoder

Applications
■ USB Keyboard only
■ Both USB and PS/2 compatible Keyboards