Datasheet Summary
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PS2 KEYBOARD CONTROLLER
Preliminary
FEATURE
- z Low cost
- eliminate need external ponents. z Phantom key detects. z Support scan code set 1 ,2 and 3. z Support PC AT and PS/2 keyboard . z Low power CMOS device technology. z Internal pull-up resistor. z Tri-state outputs for easy board application. z Built-in 8-bit’s CPU. z 5K bytes of ROM. z 128 bytes of RAM. z Support WINDOWS TM 95, 98, 2000, ME, XP keys. z Normal operation frequency is 4 MHz. z Built-in RC type oscillator with external resister z On chip general 8 bit preload timer
DESCRIPTION
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The EC3648 is a single chip CMOS micro-controller for keyboard application, specially for IBM...