GENERAL DESCRIPTION

The EM83053A/BH microcontroller is dedicated to a keyboard encoder ,specially designed for IBM PC AT and all compatible machines. The EM83053A/BH controll all scan codes, three LEDs status, scan timing and communications between the keyboard and PC. It is easy to implement a high performance, low cost keyboard with the minimal external components.

FEATURES

• Low cost - eliminate need external components.

• Phantom key detects.

• RC oscillator ( 1.8432MHz ).

• Support scan code set 1 ,2 and 3.

• Support PC AT and PS/2 keyboard .

• 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 application keyboard encoder.

• WINDOWS is registered trademarks of Microsoft corperation.

APPLICATION

• 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.