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.