RTS902 cs-98022 1 aug/13/1998 v1.6 natural sound effect melody generator features - operating voltage range: 2.4v to 5.0v - low power consumption - 256-note rom memory - rc oscillator with an external resistor - 1 sequence trigger key and 3 direct access keys are provided to select which song is to be played. - built-in on-the-chip envelope modulator - direct-drive speaker and programmable led flash - provided pen pin for drive motor - typical oscillator frequency: 128 khz - power-on reset; melody begins from the first note. general description RTS902 is a cmos lsi designed for toys, doorbells and music boxes. it plays pr-programmed melody and is capable of generating songs in pia no effect by using the built-in digital envelope circuit. by pushing the sequence trigger key, all songs can be played sequentially with an auto- stop function. in addition, all songs can be placed in one of the three regions and selected by pushing their corresponding direct-access keys providing the auto-stop function. ripple counter tone generator osco oscillator circuit osci block diagram tempo generator testo out modulator rom rhythm generator address counter control logic tr0 tr3 testb . . . . pen pled tr3 tr2 ptb tr1 RTS902 1 2 3 4 5 6 7 pin assignment tr0 12 11 10 9 8 13 14 nc out gnd vdd osci osco nc 15 16 pen nc pled nc www.mshinetek.com free datasheet http://
RTS902 cs-98022 2 aug/13/1998 v1.6 absolute maximum ratings comments* dc supply voltage.....................................0.3v to 6.0v input/output voltage...........gnd -0.2v to vdd + 0.2v operating temperature............................-10 c to 60 c storage temperature..............................-25 c to 125 c never allow a stress to exceed the values listed under "absolute maximum ratings", otherwise the device would suffer from a permanent damage. nor is a stress at the listed value be allowed to persist over a period, since an extended exposure to the absolute maximum rating condition may also affect the reliability of the device, if not causing a damage thereof. electrical characteristics (vdd=3.0v, gnd=0v, t a =25 c, unless otherwise specified ) parameter symbol min. typ. max. conditions operating voltage vdd 2.4v - 5.0v operating current i dd - - 1ma unload stand-by current i stb - - 1 a full load led sinking current led s inking 10ma - - v ol = 1.0v pen driving current led d riving 1ma - - v oh = 2.0v out driving current out d riving - 190ma - dac full scale load = 8 oscillator frequency deviation per lot f/f - - 15% pin description pin no. designation description 1 tr3 direct access trigger pin 3 the melody in region 3 will be played when this pin is connected to gnd. 2 tr2 direct access trigger pin 2 the melody in region 2 will be played when this pin is connected to gnd. 3 tr1 direct access trigger pin 1 the melody in region 1 will be played when this pin is connected to gnd. 4 pen melody playing indicator. active high 5 ptb for testing only 6 tr0 sequential trigger pin 0. the melodies in regions 1 ? 3 will be played sequentially when this pin is connected to gnd. 7 nc no connection 8 nc no connection 9 nc no connection 10 pled led driver output pin. active low. 11 nc no connection 12 gnd negative power supply 13 out tone output pin 14 vdd positive power supply 15 osci oscillator input pin 16 osco oscillator output pin www.mshinetek.com free datasheet http://
RTS902 cs-98022 3 aug/13/1998 v1.6 typical application circuit 1. nc tr2 tr3 RTS902 tri0 nc gnd osci tr1 osco nc out pled 12 4 5 6 7 9 101112 13 14 3 pen ptb vdd nc 15 16 8 300k speaker = 8 0.25w ~ 0.5w 2. RTS902 pen ptb tr0 tr1 tr2 tr3 osco osci vdd out gnd gnd pled 300k speaker = 8 0.25w ~ 0.5w www.mshinetek.com free datasheet http://
RTS902 cs-98022 4 aug/13/1998 v1.6 bonding diagram tr3 tr2 tr1 pen ptb tr0 pled gnd gnd out vdd osci osco designation x 801.6 801.6 801.6 596.6 470.1 337.6 98.3 316.7 452.1 634.5 806.9 798.2 801.6 y note: substrate is connected to gnd about 0.93 mm RTS902 about 1.52 mm 605.8 379.2 151.6 132.2 126.9 126.7 1405.0 1409.2 1417.0 1400.3 1394.9 1200.4 833.4 pen ptb tr0 tr1 tr2 tr3 osco osci vdd out gnd gnd pled unit: in um x: 1520 y: 930 song list RTS902-1: RTS902-4: 1. la reine deo saba 1. jingle bells 2. for elise 2. we wish you a merry christmas 3. music box dancer 3. santa claus is coming to town RTS902-2: RTS902-5: 1. japanese lullaby 1. london bridge is falling down 2. brahms' lullaby 2. mary had a little lamb 3. rockaby, baby 3. down the mountain side we go RTS902-3: RTS902-6: 1. ding-dong 1. love me tender love me true 2. alarm song 2. if you love me 3. for elise 3. i can?t stop loving you notice: mshine's products are sold by description only, mshine re serves the rights to make changes in circuit design and/or spe cification at any time without notice. accordingly, the reader is cautioned to make sure the latest version of data sheets are available before placin g orders. www.mshinetek.com free datasheet http://
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