EC3648 Datasheet, PDF (1/21 Pages) List of Unclassifed Manufacturers – PS2 KEYBOARD CONTROLLER

PS2 KEYBOARD CONTROLLER
„FEATURE
zLow cost - eliminate need external components.
zPhantom key detects.
zSupport scan code set 1 ,2 and 3.
zSupport PC AT and PS/2 keyboard .
zLow power CMOS device technology.
zInternal pull-up resistor.
zTri-state outputs for easy board application.
zBuilt-in 8-bit’s CPU.
z5K bytes of ROM.
z128 bytes of RAM.
zSupport WINDOWS TM 95, 98, 2000, ME, XP keys.
zNormal operation frequency is 4 MHz.
zBuilt-in RC type oscillator with external resister
zOn chip general 8 bit preload timer
EC3648
Preliminary
„DESCRIPTION
The EC3648 is a single chip CMOS micro-controller for keyboard application,
specially for IBM PC AT and all compatible machines. It incorporate a 8-bit’s CPU
core, 5K bytes of ROM, and 128 bytes of RAM used as working RAM and stack area.
The EC3648 control all scan codes, 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.
„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.
• European keyboard.
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