DSAE006984.pdf

Partial File Text ROM / FLASH Memory CMX850 Communications Controller To Telephone Interfaces Phone Line Tip/Ring from Telco Bell 103 DTMF Pulse Tone V.22bis V.22 V.23 V.21 Bell 212A Bell
Datasheet Type Original
RoHS Unknown
Pb Free Unknown
Lifecycle Unknown

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256x8 80C51 Bell-202 CMX850 DTMF telephone keyboard keyboard controller keyboard datasheet keyboard matrix keyboard to DTMF lcd uc 202 MODEM ram 256x8 relay scanner block diagram