SM1124 Datasheet (Nippon Precision Circuits Inc)

SM1124, Multimelody IC for Pagers

Number 1 2 3 4 5 6 7 8 Name CLK SI SC ST TEST MTO VDD VSS I/O I I I I I O * * Function External reference clock input (Schmitt-trigger circuit and gate circuit built-in) Playback control serial interface data input pin1 Playback control serial interface clock input pin1 Playback star

SM1124 Features

* s 4 5 TEST s s s s s s s s Maximum of 16 tune selections (with up to 512 steps) Level hold playback mode External reference clock input. The frequency can be selected from the following 12 settings.

* Playback frequency of each song varies (8 frequencies) - 32.768 kHz system: 32.768 an