Datasheet Summary
SM1125 series
NIPPON PRECISION CIRCUITS INC.
Multimelody IC for Pagers
OVERVIEW
The SM1125 series are melody ICs fabricated in NPC’s Molybdenum-gate CMOS for use in mobile telemunications equipment. A maximum of 16 melodies can be stored in programmable ROM.
PINOUT (Top View)
8-pin VSOP
OSC SI SC ST 1 2 3 4 8 7 VSS VDD MTO TEST
Features s
1125××
6 5 s s s s s s s
Maximum of 16 melody selections (with up to 512 steps) Level hold playback mode External reference clock input versions and builtin RC oscillator versions available, set by masterslice option (RC oscillator versions require an external resistor and capacitor). 12 selectable clock frequencies (fixed for all melodies)
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