K25C81-FN Datasheet PDF - Semtech Corporation

DESCRIPTION
The FlexiCoderTM is a versatile, low-power keyboard encoder. It offers two bi-directional channels for communicating with a PC/XT/AT/PS2 system, and/or any optional keyboard-compatible devices, such as an 83 or 101/102 standard desktop keyboard, OCR, barcode reader, etc. The K25C81 directly interfaces a PC keyboard port, making custom keyboard to system communications fully transparent.

FEATURES
• Enables custom keypad scan codes to remain unaffected by the Shift States of an external keyboard
• Includes jumper-selectable autorepeat for designated keys
• Offers two-key inhibit scanning mode
• Directly interfaces a PC keyboard port
• Encodes up to 144 custom keys on an 8 X 18 matrix
• Buffers up to 122 keycodes
• Interfaces to 83/101/102 standard keyboard or other 8042-compatible device

APPLICATIONS
• Custom keyboards/keypads
• Control panels
• Automatic teller machines
• Embedded control systems
• Public Information Kiosks
• Instrumentation
• Test and Measurement equipment
• Point of Sales terminals
• Industrial Controllers
• Medical Instruments