SDL7942 Overview
The SDL7942 a single chip keyboard encoder developed for IBM PC AT, IBM PS2 and patible machine keyboard. The device detects the key press and release activity, sends the scan code to system, and accepts the mand from system. A high performance, low cost keyboard can be achieved by using the DL7942 with the minimal external ponents.
SDL7942 Key Features
- Support scan code set 1, 2 and 3
- Support PC AT and PS/2 keyboard
- 104/107 keys with with multi media or other special application keyboard encoder
- Support WINDOWS95, 98, 2000 keys
- IBM PC AT or patible machine keyboard
- IBM PS/2 model 30, 50, 60, 80 or patible machine keyboard
- Phantom key detects
- Built-in RC oscillator with external resistor
- Internal pull-up resistor for inputs
- Tri-state outputs