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SM8230A Datasheet(PDF) 2 Page - Nippon Precision Circuits Inc |
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SM8230A Datasheet(HTML) 2 Page - Nippon Precision Circuits Inc |
2 / 7 page SM8230A NIPPON PRECISION CIRCUITS—2 BLOCK DIAGRAM PIN DESCRIPTION Number Name I/O Description 1 SD I Serial data input 2SCL I Serial data transfer clock input. (For valid transfer, OE must stay LOW for 16 clock cycles.) 3OE I DTMF output enable/serial data transfer select input. Serial data transfer is selected when LOW. 4 VSS – Ground 5CLK I System clock input. The clock can be set to one of four frequencies (480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz). 6 BZL O DTMF low-frequency group analog output 7 BZH O DTMF high-frequency group analog output 8 VDD – Supply voltage CLK OE BZL VSS SCL VDD SD BZH LATCH SELECTOR Programmable Counter High Group ROM D/A Converter Output Control Programmable Counter Low Group ROM D/A Converter Output Control |
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