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K25C81 Datasheet PDF

Semtech Corporation K25C81

The K25C81 directly interfaces a PC keyboard port, making custom keyboard to system communications fully transparent.
Part No. K25C81
Datasheet K25C81 Download
Manufacturer
Semtech Corporation
Description Versatile PC/XC/AT/PS/2 Compatible Keyboard Encoder
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K25C81 datasheet page 1 preview

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. 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

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● Custom keyboards/keypads Control panels Automatic teller machines Embedded control systems Public Information Kiosks
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● 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.
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