DSA00100185.pdf
by STMicroelectronics
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EFG7189
EFG71891
DTMF GENERATOR FOR BINARY
CODED HEXADECIMAL DATA
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GENERATES 16 STANDARD DTMF TONE
PAIRS
USES LOW COST 3.579 MHz CRYSTAL
DIRECT MICROPROCESSOR INTE
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Original
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Unknown
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Unknown
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Unknown
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