EM83050H Datasheet, PDF (1/20 Pages) ELAN Microelectronics Corp – KEYBOARD ENCODER

Preliminary
EM83050H
KEYBOARD ENCODER
GENERAL DESCRIPTION
The EM83050H microcontroller is dedicated to a keyboard encoder ,specially designed for IBM PC XT/AT and
all compatible machines. The EM83050H 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 XT/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 WINDOWS^TM 95, 98 keys.
• 101/104/107 keys or other special application keyboard encoder.
• WINDOWS is registered trademarks of Microsoft corperation.
APPLICATION
• IBM PC XT/AT or compatible machine keyboard.
• IBM PS/2 model 30,50,60,80 or compatible machine keyboard.
• Japanese keyboard.
• Korean keyboard.
• Brazil keyboard.
PIN ASSIGNMENTS
P91 6
P92 7
P93 8
P94 9
P95 10
P50 11
P51 12
P52 13
P53 14
P54 15
EM83050H
36 NUM
35 SCROLL
34 P67
33 P66
32 P65
31 P64
30 P63
29 P62
28 P61
27 P60
* This specification are subject to be changed without notice.
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