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| low power eight sound effect chip (built-in resistor option) vm88/b/bn ????( x) ---------------------------------------------------------------------------------------------------------------------------------- 1.0 features c wide power supply range (2.5 - 4.5v) ?(2.5 - 4.5v) low standby power consumption oB? optional built-in resistor x? minimize external components eight programmable sound effects 8 ??? selectable sound output x?? two operation modes : one-shot and level-hold 2 N?? : ?? various standard codes available N??a? 2.0 electrical characteristics v dd = 3v, t a = 25 c (unless otherwise specified ?e] ) limits parameter symbol test conditions min typ max unit operating voltage ? v dd - 2.5 3 4.5 volt operating current i opr v dd = 3v - - 70 a standby current oB i sb v dd = 3v - - 3 a output current ? i o v oh / v ol = 2.2v / 0.8v 1 - - ma output voltage high ?? v oh v dd = 3v 2.6 - - volt output voltage low ?? v ol v dd = 3v - - 0.6 volt oscillator frequency Ul fosc v dd = 3v 52 - 72 khz 3.0 application information Y pad # pad name 1 v ss 2 v dd 3 test 1 4 out 5 nc 6 k8 7 k7 8 k6 9 k5 10 k4 11 k3 12 k2 13 k1 14 osc 1 15 osc 2 16 lh 17 test 2 18 test 3 vitelic (hk) ltd. - m & s dept. mar 99 version page
low power eight sound effect chip (buil t - in resist or option) vm88/b/bn ???? ( x ) ------------------------------------------------------------------------------------------------------------------------------- --- 24 for speaker vm88 /b /bn ? r osc v d 8 ? = 130 v dd v dd =3.0v r = 100 ? r osc = check recom m e nded va l u e ? not required f o r built-in resistor option for buz z e r Q? the ic subst r at e shoul d be connect ed t o v dd . ?r? v dd |
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