tone dialer with built-in piezo driver.
a built-in piezo-electric speaker driver for direct connection to a piezo-electric buzzer. The DTMF frequencies can be set to correspond to the DTMF standards of any coun.
for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or .
Number 1 2 3 4 5 6 7 8 Name SD SCL OE VSS CLK BZL BZH VDD I/O I I I
– I O O
– Serial data input Serial data transfer clock input. (For valid transfer, OE must stay LOW for 16 clock cycles.) DTMF output enable/serial da.
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