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EC3648 Datasheet PS2 KEYBOARD CONTROLLER

Manufacturer: E-CMOS

Overview: www.DataSheet4U.com PS2 KEYBOARD CONTROLLER EC3648 Preliminary FEATURE „ z Low cost - eliminate need external components. 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.

Download the EC3648 datasheet PDF. This datasheet also includes the EC3648_E variant, as both parts are published together in a single manufacturer document.

General 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.

Key Features

  • D/AD 2E/AE 2F/AF 30/B0 31/B1 32/B2 33/B3 34/B4 35/B5 36/B6 1D/9D 38/B8 39/B9 E0 38/E0.