General Description
In RF keyboard system, that is divided into two parts (the transmitter and the receiver). The eKK6511 micro-controller is dedicated to a RF keyboard encoder for single channel RF transmitter module. The eKK6511 is scanning keyboard state, encode key data and rely on RF Tx module to transmit data.

FEATUREs
■ Low cost – eliminate need external components.
■ Phantom key detect.
■ Resonator oscillator (2.00 MHz)
■ Low power CMOS device technology
■ Internal pull-up resistor.
■ Tri-state outputs for easy board application.
■ Built-in 4K ROM.
■ Support WINDOWSTM 95, 98, 2000 keys.
■ 104/107 keys with multi-media or other special keyboard encoder.
■ Support RF transmit module sleep mode (Sleep current under 10µA).
■ Warm-up time of RF Tx modules: 7.2µ sec
■ Using the device ID to identify which receiver was connected.
    ● DIP switch to select. (8 sets ID)
    ● Random generate ID (255 sets ID) and store in EEPROM (93LC46)
■ Package: 40-pins PDIP, 44-pins QFP

APPLICATION
■ Support the single channel or two channels RF transmitter module.
■ IBM PC AT or compatible machine keyboard.
■ IBM PS/2 model 30,50,60,80 or compatible machine keyboard.
■ Japanese keyboard.
■ Korean keyboard.
■ Brazilian keyboard.
■ European keyboard.