development tools suppor t low standby current (<5 a at 3v ) 3 .0v-6v single power supply operatio n auto-power dow n rectly 2 drives buzzer or speaker di- out and v 1 out v pin drives speaker with a transistor out c ptional pop noise elimination functio n o quality adpcm data compression provides high soun d built-in d/a converter, epro m ingle external resistor to determine sample rat e s built-in oscillator with variable sample rat e pulse, busy signal, and led three programmable output pins for stp sto p rp interrupt pin for master rese t i 15 ms debounce time suitable for cd s triggering option holdable and unholdable, edge and leve l sbt for sequential play-all or random pla y four trigger pins, tg 1 to tg 4 for eight groups oice data re-use saves memory spac e v extends the duration of playback ombination of voice building block s c versatile features for playbac k inimum 20 second voice length at 6 kh z m ? features trigger multiple groups playback in sequence. controlled by tg 1 to t g 4 pins. the sbt pin can be used to maximum of eight groups are available with activation sections will form an individual group for data playback. a subdivided into 126 sections. any combination of these the voice data memory area of the api8208a can be group of sections of playback. ramp-down function eliminates undesired noise at the end filtering or amplifier circuit is needed. an automatic speaker through a low cost npn transistor. no complex , enables the device to drive a out a current output pin, c speaker. 2 provides direct drive to buzzer or out v 1 and out v from 3 . 0 v to 6.0v. pwm digital amplifier output pins, the api8208a provides wide operating voltage range background music each from one of two different chips. external mixer in which speech can be mixed with parallel in order to achieve signal mixing without an longer voice duration. two devices can be configured in duration. in addition, devices can be cascaded to achieve versatile combinations in sections achieve longer playback sounds and even special sound effects can be synthesized. sounds such as human speech, animal sounds, musical in voice playback but still achieves high voice quality. the api8208a eliminates the need of complicated circuitry voice data at 6 khz sample rate. on-chip eprom which can store up to 20 seconds of is used. the audio message is stored in a 512k bits varying playback duration. a proprietary adpcm algorithm api8208a is a high quality voice synthesizer capable of general description voice rom an t tile 20 sec ins t versa 11/15/99 1 aplus api8208a
2 aplus api8208a group configuration voice within each group are combinations of different fixed memory sections of up to 126 sections. these sections are the fundamental voice building blocks for arranging playback without limiting sequencing. this provides flexibility and allows data to be re-used, beneficial for applications with many repeated sounds or words. an example of group configuration is illustrated below: group no. section entry group 1 sec 1 + sec 2 + sec 3 ??. sec 109 group 2 sec 3 + sec 2 group 3 sec 10 + sec 11 + sec 12 group 4 s ec110 + sec 10 + sec 5 group configuration the entry of sections for each group is truly random and without limitation. however, there is a limit in the total number of entries for eight groups, which is 992 in the api8208a it is acceptable to allocate all entries into only one group or distribute out to other groups. it depends on how many groups of messages are required. programmable options groups in api8208a can have independent options. they include: edge or level trigger unholdable or holdable trigger retriggerable or non-retriggerable sequential or random playback led1, led2, busy, and stop pulse are configurable four selections in playback frequency selections in triggering the api8208a can be triggered in different ways, edge or level trigger, holdable or unholdable, retriggerable or non-retriggerable. the combinations of the triggering options provide versatile playback. by enabling retrigger, the playback can be controlled in stop and start mode. a trigger on any trigger pin will stop the current message and start the next message immedi- ately. selections in playback frequency this option provides four choices for each group in frequency which implies it is possible to have four different sampling rates in one chip or one sample rate with a different playback frequency. as a matter of fact, the available choices are also dependent on the pullup resistor value at the osc pin. for example, if the fundamental frequency choice is f, it can provide choices in x1, x1-1/2, x2, x3. selections in playback mode there are two playback modes, sequential and random in the api8208a if the chip is programmed in sequential mode, messages will playback in the order from group 1 to group 8 by triggering the sbt pin. if the chip is programmed in random mode, messages will be played back randomly by triggering the sbt pin. selections in output buffer there are three independent output pins, out1, out2, and out3, available for several combinations of led1, led2, stop pulse, and busy signal for each group. the following table illustrates the four different combinations. out1 out2 out3 1. l e d 1 bus y le d2 2. s to p led 2 led 1 3. busy led 1 st op 4. l e d 2 st op b us y led1 and led2 are complemented outputs flashing at approximately a 3 hz rate. stop pulse (stop) gives a 15 ms positive pulse at the end of the playback for each group with option have or do not have the stop pulse. busy is active high and section dependent but not group dependent. even if same section in different group may have different output in busy output. for instance, busy can be high for section 4 in group 1 but low in group 4. busy can be used as a synchronous signal. during standby mode all three outputs must be low. software support aplus provides dedicated software to the customer. with this tool, the customer can compose their own messages and configure the chip to fit into their applications very easily.
3 oscillator osc clock generator control logic tg1 tg2 tg3 tg4 sbt irp output driver out1 out2 out3 pop noise reduction address sequencer voice eprom adpcm decoder buzzer buffer d/a c out v out1 v out2 gnd v cc block diagram pin description out1 programmable output 1 out2 programmable output 2 out3 programmable output 3 v out 1 pwm audio signal output for buzzer and speaker v out 2 pwm audio signal output for buzzer and speaker gnd power ground c out current output from internal dac for speaker playback osc oscillator resistor pin to control sampling frequency v pp program power supply, no connect when voice playback tg1 trigger switch 1, internal pull low, active high trigger switch 2, internal pull low, active high v cc positive power supply tg3 trigger switch 3, internal pull low, active high tg4 trigger switch 4, internal pull low, active high sbt sequential trigger, internal pull low, active high irp interrupt to stop playback, internal pull low, active high note: 1 . the following pins are used to program data into the memory: pins 4, 5, 6, 8, 9, 12, 15 and 16. pin configurations 300-mil pdip 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 out1 v out1 v out2 gnd out2 out3 c out osc irp sbt tg4 tg3 v cc tg2 tg1 v pp aplus api8208a tg2
4 absolute maximum ratings symbol parameter value unit v cc - gnd terminal voltage with respect to gnd ? 0.5 to +7.0 v v in gnd ? 0.3 < v in < v cc + 0.3 v v out gnd < v out < v cc v t a operating temperature ? 10 to +85 c t stg storage temperature ? 55 to +125 c bonding parameters pin name x y 1 out1 - 6 ? 1017 2v out1 297 ? 1017 3v out2 803 ? 1017 4 g n d 1058 ? 1017 5 out2 9 2 7 1017 6 out3 6 9 7 1017 7c out 199 1017 8 o s c ? 103 1017 9v pp ? 358 1017 1 0 tg1 ? 566 1017 1 1 tg2 ? 810 1017 12 v cc ? 1059 1017 1 3 tg3 ? 934 ? 1017 1 4 tg4 ? 689 ? 1017 1 5 s b t ? 444 ? 1017 1 6 i r p ? 200 ? 1017 bonding diagram note: programming requires connection to pins 4, 5, 6, 8, 9, 12, 15, and 16. 12 11 10 9 8 7 6 5 13 14 15 16 2 4 13 nc nc (0,0) x y note: substrate must be connected to gnd pad size = 80 m x 80 m die size = 2350 x 2260 m 92.5 x 88.97 mil aplus api8208a
5 dc characteristics symbol parameter description test conditions m i n . typ. max. unit v cc operating voltage 3 . 0 4 .5 6.0 v i sb standby current vcc = 3.0v, i/o open ? 1 5 a i op operating current vcc = 3.0v, i/o open ? ? 1 0 0 a v ih input high voltage vcc = 3.0v 2 . 5 3 . 0 3 . 5 v v il input low voltage vcc = 2.0v ? 0 . 3 0 0 . 3 v i oh v out high operating current vcc = 3.0v, v out = 3.0v ? ? 1 2 ? m a i ol v out low operating current vcc = 3.0v, v out = 0v ? 1 2 ? ma i co c out operating current vcc = 3.0v, v cout = 0.7v ? ? 2 ? ma i stph stp high operating current vcc = 3.0v, v stp = 3.0v ? ? 5 ? ma i stpl stp low operating current vcc = 3.0v, v stp = 0v ? 5 ? m a i led led output current vcc = 2.2v ? 6.0v 6 8 1 0 ma e f/f f requency stability ( f osc [3v] ? f osc [3.5v]) / f osc (3.0v) ?? 5 % sampling frequency vs r osc for api8208a common sampling rate vs. oscillator resistor sampling frequency r osc k h z kohm 5 . 0 290 5 . 5 262 6 . 0 240 6 . 5 220 7 . 0 201 7 . 5 187 8 . 0 174 8 . 5 1 6 2 9 . 0 153 9 . 5 1 43 10.0 135 10.5 127 11.0 120 12.0 108 sampling frequency vs r osc for api8208a common resistors vs. sampling rate s ampling frequency rosc k hz k oh m 13 .0 1 00 1 4 . 0 9 1 1 6. 0 82 22 .0 54 aplus api8208a
6 timing waveforms 1. level, unholdable, non-retriggerable a. trigger is shorter than a group output b. trigger is longer than a group output 2. level holdable a. trigger is shorter than a group output b. trigger is longer than a group output 3. single button trigger (sbt), sequential a. level unholdable tg1 group 2 tg2 c out led stp group 1 group 2 group 2 tg1 group 2 tg2 c out led group 1 group 2 g roup 2 group 1 sbt c out group 2 group 2 g roup 2 group n g roup 1 group 1 sbt c out group 2 group 2 group 2 group n group 1 where n is up to 8. b. level holdable aplus api8208a
7 4. edge, unholdable, non-retriggerable a. trigger is shorter than a group output b. trigger is longer than a group output 5. edge holdable a. trigger is shorter than a group output b. trigger is longer than a group output 6. single button trigger (sbt), sequential a. edge unholdable where n is up to 8. b. edge holdable tg1 tg2 c out led group 2 group 1 group 2 sbt c out group2 group 1 1 group group n group 2 sbt c out group 1 1 group group n tg1 grroup 2 tg2 c out group 1 grouup 2 stp led aplus api8208a
8 notes: 1 . to direct dirve a speaker or buzzer, c is needed (c = 0.1 f). 2 . r = 330 ohm (if using transistor 8050 and vcc = 4.5v). 3 . sp = 8 ohm speaker. 4 . to determine the value of r osc , refer to the sampling frequency vs. r osc tables on page 5. aplus api8208a out3 out c osc r osc irp sbt gnd vcc osc r sp out c osc irp r sbt gnd vcc speaker 32/64 ohm buzzer or piezo out1 v osc r out2 v c osc r irp sbt tg4 tg3 tg2 tg1 gnd vcc osc r sp out c osc irp sbt tg4 tg3 tg2 tg1 gnd vcc cascade application typical application application circuits
9 aplus api8208a parallel application vcc gnd tg1 tg2 tg3 tg4 sbt irp osc c out sp r osc vcc gnd tg1 tg2 tg3 tg4 sbt irp osc c out r osc r led application vcc gnd tg1 tg2 tg3 tg4 sbt irp osc c out sp r osc out2 out1 r notes: the following are typical values: 1. b of npn transistor > 130. 2. sp = 8 w . 1/4w. 3. piezo buzzer resonant frequency = 1 khz.
aplus api8208a r osc r sp sw1 sw2 sw8 sw5 sw6 sw7 sw3 sw4 out c osc tg4 tg3 tg2 tg1 gnd vcc r osc r sp out c cds osc irp sbt gnd vcc 8-segment trigger application cds application 10
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