technical data simple melody generator BT8028-xx features ? 127-note rom memory ? 1.3v to 3.3v power supply and low power consumption ? rc oscillator on chip ? one shot or level hold mode ? sound range: 4 octaves, 2 series ? tempo: 16 kinds (presto- largo) ? direct piezo drive functions ? solution of automatic stop or repeat of the melody ? dynamic speaker can be driven with external npn transistor ? two or three times repeat of melody (mask option) ? each note can be individually programmed to be staccato or legato (mask option) ? changing the contents of melody is possible by reprogramming the maskable rom ? power on reset; melody begins from the first note ? start from the head of melody ? bare chip or to-92 are available BT8028c- xxl(s) out v cc v ss description the BT8028 is a cmos lsi chip which electronically plays a prearranged mel ody. selection of melody start signal is possible by mask option: orders specification suffix "l" indicate level hold mode, and suffix "s" indicate one shot mode. the universal version (as one shot or level hold mode) is possible also (suffix "u"). absolute maximum ratings (ta = 25 o c) characteristic symbol value unit dc supply voltage v cc ? v ss -0.3 ~ 3.5 v input voltage v in v ss ? 0.3 ~ v cc ? 0.3 v operating temperature t opr -20 ~ +65 o c storage temperature t stg -55 ~ +125 o c electrical char acteristics (t a = 25 o c, v cc = 1.5v ; unless otherwise specified) characteristic symbol test condition min typ max unit operating voltage v cc 1.3 1.5 3.3 v supply current stand-by i s 0.1 1 operating i cc output open 60 a output drive current i oh v cc =1.3v, v o =0.8v 0.6 1.5 ma output sink current i ol v cc =1.3v, v o =0.5v 0.6 1.5 ma frequency stability f/f f osc (1.6v) - f osc (1.3v) 12 % f osc (1.3v) 1
BT8028-xx application circuits level hold 1 2 3 4 5 6 7 mt t est osc v ss v cc bd bdn 1.5v or 3.0v + - k1 1 2 3 4 5 6 7 mt test osc v ss v cc bd bdn 1.5v or 3.0v + - k1 one shot 1 2 3 4 5 6 7 mt test osc v ss v cc bd bdn 1.5v or 3.0v + - k1 1 2 3 4 5 6 7 mt test osc v ss v cc bd bdn 1.5v or 3.0v + - k1 to-92 one shot or level hold mode chip form 2
BT8028-xx for speaker for piezo 1.5 v - + - + v ss v dd r = 50 1.5 v - + - + v ss v dd piezo available song list new ext song list sec 1 BT8028c-001 for elise 13 2 BT8028c-002 staff wrk 20 3 BT8028c-003 happy birthday 13 4 BT8028c-004 jingle bell 12 5 BT8028c-005 it's small world 21 6 BT8028c-006 3 children song 13 7 BT8028c-007 cuocoo waltz 10 8 BT8028c-008 london bridge is falling down 16 9 BT8028c-009 trains running fast 11 10 BT8028c-010 love me tender love me true 38 11 BT8028c-011 love story 23 12 BT8028c-012 old mcdonald had a farm 25 13 BT8028c-013 jingle bell (santa claus is coming to town) 28 14 BT8028c-014 you are my sunshine 12 15 BT8028c-015 santa claus is coming to town 20 16 BT8028c-016 silent night 26 17 BT8028c-017 twinkle twinkle little star 14 18 BT8028c-018 korean melody 29 19 BT8028c-019 phone ringer 3 20 BT8028c-020 three little pigs 18 21 BT8028c-021 mna 38 22 BT8028c-022 nov24 (cuckoo waltz) 20 23 BT8028c-023 home sweet home 39 3
BT8028-xx 4 new ext song list sec 24 BT8028c-024 cuckoo waltz 2 18 26 BT8028c-026 az1 44 27 BT8028c-027 seven forty 28 28 BT8028c-028 az3 24 29 BT8028c-029 az4 26 30 BT8028c-030 ir1 34 31 BT8028c-031 ginm petersburg 53 32 BT8028c-032 hymn of russia 55 33 BT8028c-033 my moscow 27 34 BT8028c-034 home sweet home (ver2, shot) 32 35 BT8028c-035 sound generator + led driver 2 hz 36 BT8028c-036 varvara 19 43 BT8028c-043 alexandra 45 44 BT8028c-044 ir2 27 45 BT8028c-045 for elise 2 15 46 BT8028c-046 god bless america 48 49 BT8028c-049 gimn usa 64 50 BT8028c-050 reg time 20 51 BT8028c-051 it's small world 2 21 52 BT8028c-052 az4-2 21 53 BT8028c-053 car alarm 10 57 BT8028c-057 sound generator + led driver 4 hz 59 BT8028c-059 day dream (shuman) 67 60 BT8028c-060 victory day 44 62 BT8028c-062 oh! fighting korea 34 63 BT8028c-063 champion 24 64 BT8028c-064 march 32 67 BT8028c-067 air tale 20 70 BT8028c-070 hymn of ukraine 55 71 BT8028c-071 metal 67 72 BT8028c-072 pong
BT8028-xx ? to-92 5
BT8028-xx n suffix plastic dip (ms ? 001ba) symbol min max a 8.51 10.16 b 6.1 7.11 c 5.33 d 0.36 0.56 f 1.14 1.78 g h j 0 10 k 2.92 3.81 notes: l 7.62 8.26 1. dimensions ?a?, ?b? do not include mold flash or protrusions. m 0.2 0.36 maximum mold flas h or protrus ions 0.25 mm (0.010) per s ide. n 0.38 dimension, mm 2.54 7.62 l h m j a b f g d seating plane n k 0.25 (0.010) m t -t- c 1 8 4 5 6
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