K25C81

FlexiCoderTM K25C81 Versatile PC/XC/AT/PS/2 Compatible Keyboard Encoder HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODERTM FAMILY DESCRIPTION The FlexiCoder is a versatile, lowpower 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. TM FEATURES 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 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 On an 8 x 18 matrix, the FlexiCoderTM will scan, debounce and encode up to 144 keys. Scan codes corresponding to single keys of the IBM 101 keyboard, or a combination of these keys when depressed with Shift, Ctrl, and Alt keys, are generated with each key press. Custom keypad input is not effected b...