issi IS22C020 integrated silicon solution, inc. 1 vp002-1c 10/01/98 issi reserves the right to make changes to its products at any time without notice in order to improve design and supply the be st possible product. we assume no responsibility for any errors which may appear in this publication. ? copyright 1998, integrated silicon solution, inc. IS22C020 16 to 20 sec instant voice rom issi features ? voice length at: C 8 khz sampling is 16 seconds C 6 khz sampling is 20 seconds ? silence compression saves memory ? four trigger pins, s1 to s4 for eight sections ? sbt pin play-all or sequential play-all ? 15 ms debounce suitable for cds ? irp interrupt pin stops playback at once ? stp stop pulse generated at playback end ? busy signal for cpu control ? two leds flash at 3 hz ? 2.4v to 6v single power supply operation ? low standby current (<5 m a at 3v) ? auto power-down ? built-in oscillator, d/a converter, eprom ? adpcm data compression ? optional pop noise elimination function ?c out pin drives speaker with a transistor ? development tool support ?v out1 and v out2 drives buzzer directly ? sampling rate determined by an external resistor ? holdable and unholdable triggering option ? industrial temperature available general description the IS22C020 is a high-quality voice synthesizer with capacity from 16 to 20 seconds. a proprietary adpcm algorithm is used. the audio message is stored in a 512k bit on-chip one-time programmable memory. the IS22C020 eliminates the need for complicated circuitry in voice playback but still achieves high voice quality. sounds such as human speech, animal sounds, musical sounds, and even special effects can be synthesized. devices can be cascaded to achieve longer voice duration. two devices can be configured in parallel in order to achieve signal mix- ing without an external mixer so speech can be mixed with background music each from one of two different chips. the instant programming nature of the IS22C020 gives a very short turn around time free of nre charges usually required with conventional voice roms. users now can add a voice synthesis function as an additional feature to their products even when production volume is small. as a result, initial invest- ment is minimal and the risk in the product develop- ment phase is reduced. the IS22C020 provides wide voltage operating range from 2.4v to 6.0v. a pair of pwm output pins, v out1 and v out2, provide direct drive to a buzzer. voice quality is comparable to a speaker output and power consumption is much lower. this facilitates button battery applications such as greeting cards. a current output pin, c out , enables the device to drive a speaker through a low cost npn transistor. no complex filtering or amplifier circuit is needed. an automatic ramp-up and ramp-down function elimi- nates undesired noise at the beginning and end of playback. up to eight sections are available and accessible through the s1 to s4 trigger pins. the sbt trigger pin can be programmed to playback all eight sections or sequentially from section 1 to 8. an interrupt pin (irp), stop pulse (stp) or busy signals provide handshaking with m p or other IS22C020 devices. all trigger pins give 15 ms debounce time and are ideal for cds applications. two led drivers are available, flashing on and off approximately at 3 hz. the inter- nal voltage compensated oscillator requires only one external resistor. different sampling frequencies are determined by the external oscillator resistor value. october 1998
issi IS22C020 2 integrated silicon solution, inc. vp002-1c 10/01/98 programmable options the IS22C020 provides programmable user specified control functions. they include: ? non-sequence or sequence play-all ? unholdable or holdable trigger ? stop or busy signal selection ? automatic ramp-up and ramp-down or no ramp-up or ramp-down silence compression if a particular sound sequence includes periods of silence, the IS22C020 will automatically compress the silence to save memory space. this compres- sion will not affect playback of the sound sequence. oscillator osc clock generator control logic s1 s2 s3 s4 sbt irp led driver led1 led2 stp/busy pop noise reduction address sequencer eprom adpcm decoder buzzer buffer d/a c out v out1 v out2 gnd vcc block diagram segment decode 12345678 s1hlllhllh s2lhllhhll s3llhllhhl s4lllhllhh 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 567 8 910 sample frequency (khz) typical value, vcc = 4.5v r osc (m w ) 11 12 13 14 15 sample frequency
issi IS22C020 integrated silicon solution, inc. 3 vp002-1c 10/01/98 pin configurations 16-pin dip and sop pin descriptions led1 drives first led flash at 3 hz (active low) v out1 pwm audio signal output for buzzer stp/busy generate busy signal or 30 ms pulse after voice playback gnd ground v out2 compliment pwm audio signal output for buzzer led2 drives second led flash at 3 hz (active low) 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 during playback s1-s4 input switches, internal pull low, active high sbt one key or sequential trigger, internal pull low, active high irp interrupt to stop playback, internal pull low, active high vcc power supply voltage 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 led1 v out1 v out2 gnd stp/busy led2 c out osc irp sbt s4 s3 v cc s2 s1 v pp bonding diagram 12 13 11 (0,0) x y note: substrate must be connected to gnd pad size = 95 m x 95 m 10 9 8 7 6 5 14 15 16 nc 2 1 3 4 bonding parameters pin name x y 1 led1 3288.75 1200 2v out1 3288.75 1459 3v out2 3288.75 1687 4 gnd 3288.75 1894 5 stp 86.25 1875 6 led2 86.25 1635 7c out 86.25 1440 8 osc 86.25 1027 9v pp 86.25 742 10 s1 86.25 465 11 s2 86.25 270 12 vcc 86.25 82 13 s3 3288.75 88 14 s4 3288.75 296 15 sbt 3288.75 502 16 irp 3288.75 742 note: programming requires connection to pins 4, 5, 6, 8, 9, 12, 15, and 16.
issi IS22C020 4 integrated silicon solution, inc. vp002-1c 10/01/98 dc characteristics symbol parameter description test conditions min. typ. max. unit v cc operating voltage 2.4 3.0 6.0 v v ih input high voltage vcc = 3.0v 2.5 3.0 3.5 v v il input low voltage vcc = 2.0v C0.3 0 0.3 v i oh v out high operating current vcc = 3.0v, v out = 3.0v C12 ma i ol v out low operating current vcc = 3.0v, v out = 0v 12 ma i co c out operating current vcc = 3.0v, v cout = 0.7v C2 ma i stph stp high operating current vcc = 3.0v, v stp = 3.0v C5 ma i stpl stp low operating current vcc = 3.0v, v stp = 0v 5 ma i led led output current vcc = 2.2v C 6.0v 6 8 10 ma i sb standby current vcc = 3.0v, i/o open 1 5 m a i op operating current vcc = 3.0v, i/o open 100 m a d f/f frequency stability 1 C f osc (3.5v)/f osc (3.0v) 5 % switching waveforms s1 to s4 segment triggers. pulse triggered. a. trigger is shorter than a phrase output b. trigger is longer than a phrase output s1 phrase 2 s2 c out led stp phrase 1 phrase 2 phrase 2 absolute maximum ratings (1) symbol parameter value unit v term terminal voltage with respect to gnd C0.5 to +7.0 v t bias temperature under bias C40 to +85 c t stg storage temperature C55 to +125 c notes: 1. stress greater than those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. ac switching characteristics symbol parameter description typ. unit t dd debounce delay 15 ms t st stop pulse width 30 ms operating range range ambient temp. vcc commercial 0 c to +70 c 2.4v to 6.0v industrial C40 c to +85 c 2.4v to 6.0v
issi IS22C020 integrated silicon solution, inc. 5 vp002-1c 10/01/98 switching waveforms single button trigger, nonsequential (sbt) a. pulse triggered b. level triggered phrase 1 sbt c out phrase 2 phrase n phrase 1 phrase n phrase 1 phrase 1 sbt c out phrase 2 phrase 1 phrase n phrase 1 single button trigger, sequential (sbt) a. pulse triggered b. level triggered phrase 1 sbt c out phrase 2 phrase 2 phrase 2 phrase n phrase 1 phrase 1 sbt c out phrase 2 phrase 2 phrase 2 phrase n phrase 1 level triggered a. trigger is shorter than a phrase output b. trigger is longer than a phrase output s1 phrase 2 s2 c out led phrase 1 phrase 2 phrase 2
issi IS22C020 6 integrated silicon solution, inc. vp002-1c 10/01/98 application circuits typical application cascade application vcc gnd s1 s2 s3 s4 sbt irp osc c out sp r osc vcc gnd s1 s2 s3 s4 sbt irp osc v out2 r osc v out1 piezo buzzer vcc gnd sbt irp osc c out sp r osc vcc gnd sbt irp osc r osc c out stp
issi IS22C020 integrated silicon solution, inc. 7 vp002-1c 10/01/98 application circuits parallel application led application notes: the following are typical values: 1. r osc = 2 m w . 2. ? of n (npn transistor) > 130. 3. sp = 8 w . 1/4w. 4. piezo buzzer resonant frequency = 1 khz. vcc gnd s1 s2 s3 s4 sbt irp s1 s2 s3 s4 sbt irp osc c out sp r osc vcc gnd osc c out r osc vcc gnd s1 s2 s3 s4 sbt irp osc c out sp r osc led2 led1
issi IS22C020 8 integrated silicon solution, inc. vp002-1c 10/01/98 application circuits cds application 8-segment trigger application notes: the following are typical values: 1. r osc = 2 m w. 2. ? of n (npn transistor) > 130. 3. sp = 8 w . 1/4w. 4. piezo buzzer resonant frequency = 1 khz. vcc gnd sbt irp osc cds c out sp r osc vcc gnd s1 s2 s3 s4 osc c out sw4 sw3 sw7 sw6 sw5 sw8 sw2 sw1 sp r osc
issi IS22C020 integrated silicon solution, inc. 9 vp002-1c 10/01/98 notice integrated silicon solution, inc., reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. integrated silicon solution, inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. while the information in this publication has been carefully checked, integrated silicon solution, inc. shall not be liable for any damages arising as a result of any error or omission. integrated silicon solution, inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. products are not authorized for use in such applications unless integrated silicon solution, inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of integrated silicon solution, inc. is adequately protected under the circumstances. copyright 1998 integrated silicon solution, inc. reproduction in whole or in part, without the prior written consent of integrated silicon solution, inc., is prohibited. integrated silicon solution, inc. 2231 lawson lane santa clara, ca 95054 tel: 1-800-379-4774 fax: (408) 588-0806 e-mail: sales@issiusa.com http://www.issiusa.com issi ordering information commerical range: 0 c to +70 c order part no. package IS22C020x unpackaged IS22C020p 300-mil plastic dip IS22C020s 300-mil plastic sop industrial range: C40 c to +85 c order part no. package IS22C020xi unpackaged IS22C020pi 300-mil plastic dip IS22C020si 300-mil plastic sop
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