UM9169 microcomputer dialing integrated circuit diagram

Published:2011/5/5 8:50:00 Author:Nicole | Keyword: microcomputer, dialing | From:SeekIC

UM9169 is microcomputer dialing integrated circuit. It is used in all kinds of communication telephones. 1, functions and features UM9169 integrated circuit contains double audio frequency dialing singal process circuit, key switch singal encoding and decoding and squelch control circuit. 2, pin function and data UM9169 integrated circuit's pin function and data is shown in the table 1-1.



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