ISSI IS22C012 VERSATILE 10 SEC INSTANT VOICE ROM ® ADVANCE INFORMATION FEBRUARY 1999 FEATURES • Minimum 10 second voice length at 6 KHz • Versatile features for playback • Combination of voice building blocks extends the duration of playback • Voice data re-use saves memory space • Four trigger pins, S1 to S4 for eight groups • SBT for sequential play-all • Holdable and unholdable, edge and level triggering option • 15 ms debounce time suitable for CDS • IRP interrupt pin for master reset • Three programmable output pins for STP Stop Pulse, BUSY Signal, and LED • • • • • • • • • • • Built-in oscillator with variable sample rate Single external resistor to determine sample rate Built-in D/A converter, EPROM ADPCM data compression provides high sound quality Optional pop noise elimination function COUT pin drives speaker with a transistor VOUT1 and VOUT2 drives buzzer or speaker directly Auto-power down 2.4V-6V single power supply operation Low standby current (<5 µA at 3V) Development tools support GENERAL DESCRIPTION IS22C012 is a high quality voice synthesizer capable of varying playback duration. A proprietary ADPCM algorithm is used. The audio message is stored in a 256K bits onchip EPROM which can store up to ten seconds of voice data at 6 KHz sample rate. The IS22C012 eliminates the need of complicated circuitry in voice playback but still achieves high voice quality. Sounds such as human speech, animal sounds, musical sounds and even special sound effects can be synthesized. Versatile combinations in sections achieve longer playback duration. In addition, devices can be cascaded to achieve longer voice duration. Two devices can be configured in parallel in order to achieve signal mixing without an external mixer in which speech can be mixed with background music each from one of two different chips. Group of sections The voice data memory area of the IS22C012 can be subdivided into 124 sections. Any combination of these sections will form an individual group for data playback. A maximum of eight groups are available with activation controlled by S1 to S4 pins. The SBT pin can be used to trigger multiple groups playback in sequence. Group Configuration Voice within each group are combinations of different fixed memory sections of up to 124 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. The IS22C012 provides wide operating voltage range from 2.4V to 6.0V. PWM digital amplifier output pins, VOUT1 and VOUT2 provides direct drive to buzzer or speaker. An example of group configuration is illustrated below: Group No. Section Entry A current output pin, COUT, enables the device to drive a speaker through a low cost NPN transistor. No complex filtering or amplifier circuit is needed. An automatic rampdown function eliminates undesired noise at the end of playback. 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 Sec110 + Sec 10 + Sec 5 This specification contains ADVANCE INFORMATION data. ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors which may appear in this publication. © Copyright 1999, Integrated Silicon Solution, Inc. Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 1 ISSI IS22C012 Group Configuration (continued) 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 IS22C012. 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 IS22C012 can have independent options. They include: • Edge or Level trigger • Unholdable or Holdable trigger • Retriggerable or non-retriggerable • LED1, LED2, Busy, and Stop pulse are configurable • Four selections in playback frequency Selections in Triggering The IS22C012 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 content message and start the next message immediately. 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 2 ® 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 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. LED1 LED2 Busy 2. STOP LED1 LED2 3. Busy Stop LED1 4. LED2 Busy Stop 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 ISSI provides dedicated software to the customer. With this tool, the customer can compose their own messages and configure the chip to fit intor their applications very easily. Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 ISSI IS22C012 ® BLOCK DIAGRAM OSC OSCILLATOR VCC VOICE EPROM ADDRESS SEQUENCER GND CLOCK GENERATOR S1 S2 S3 S4 SBT IRP ADPCM DECODER CONTROL LOGIC OUT1 OUT2 OUT3 COUT POP NOISE REDUCTION OUTPUT DRIVER Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 D/A BUZZER BUFFER VOUT1 VOUT2 3 ISSI IS22C012 ® PIN DESCRIPTION PIN CONFIGURATIONS 300-mil PDIP OUT1 Programmable output 1 OUT2 Programmable output 2 OUT3 Programmable output 3 VOUT1 PWM audio signal output for buzzer and speaker OUT1 1 16 IRP VOUT1 2 15 SBT VOUT2 3 14 S4 GND 4 13 S3 VOUT2 PWM audio signal output for buzzer and speaker OUT2 5 12 VCC GND Power ground OUT3 6 11 S2 COUT Current output from internal DAC for speaker playback COUT 7 10 S1 OSC Oscillator resistor pin to control sampling frequency OSC 8 9 VPP VPP Program power supply, no connect when voice playback S1 Trigger switch 1, internal pull low, active high S2 Trigger switch 2, internal pull low, active high VCC Positive power supply S3 Trigger switch 3, internal pull low, active high S4 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. BONDING PARAMETERS BONDING DIAGRAM 12 11 Pin Name X Y 1 OUT1 204 –678 2 VOUT1 423 –678 3 VOUT2 718 –678 4 GND 893 –678 5 OUT2 786 677 6 OUT3 590 677 7 COUT 167 677 8 OSC –89 677 9 VPP –306 677 10 S1 –483 677 Die size = 2128 x 1635 µm 11 S2 –691 677 83.78 x 64.37 mil 12 VCC –899 677 13 S3 –796 –678 14 S4 –588 –678 15 SBT –380 –678 16 IRP –172 –678 10 9 8 7 6 5 NC Y X (0,0) 13 14 15 16 NC 1 2 3 4 Note: Substrate must be connected to GND Pad size = 80 µm x 80 µm Note: Programming requires connection to pins 4, 5, 6, 8, 9, 12, 15, and 16. 4 Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 ISSI IS22C012 ® ABSOLUTE MAXIMUM RATINGS Symbol VCC - GND VIN VOUT TA TSTG Parameter Terminal Voltage with Respect to GND Operating Temperature Storage Temperature Value –0.5 to +7.0 GND – 0.3 < VIN < VCC + 0.3 GND < VOUT < VCC –10 to +85 –55 to +125 Unit V V V °C °C DC CHARACTERISTICS Symbol Parameter Description Test Conditions Min. Typ. Max. Unit VCC ISB IOP VIH VIL IOH IOL ICO ISTPH ISTPL ILED ∆F/F 2.4 Vcc = 3.0V, I/O Open — Vcc = 3.0V, I/O Open — Vcc = 3.0V 2.5 Vcc = 2.0V –0.3 Vcc = 3.0V, VOUT = 3.0V — Vcc = 3.0V, VOUT = 0V — Vcc = 3.0V, VCOUT = 0.7V — Vcc = 3.0V, VSTP = 3.0V — Vcc = 3.0V, VSTP = 0V — Vcc = 2.2V – 6.0V 6 (FOSC [3V] – FOSC [3.5V]) / FOSC (3.0V) — 3.0 1 — 3.0 0 –12 12 –2 –5 5 8 — 6.0 5 100 3.5 0.3 — — — — — 10 5 V µA µA V V mA mA mA mA mA mA % Operating Voltage Standby Current Operating Current Input HIGH Voltage Input LOW Voltage VOUT HIGH Operating Current VOUT LOW Operating Current COUT Operating Current STP HIGH Operating Current STP LOW Operating Current LED Output Current Frequency Stability Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 5 ISSI IS22C012 SAMPLING FREQUENCY vs ROSC FOR IS22C012 SAMPLING FREQUENCY vs ROSC FOR IS22C012 Common Sampling Rate vs. Oscillator Resistor Common Resistors vs. Sampling Rate Sampling Frequency KHz 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 22.0 6 ROSC Kohm 290 262 240 219 201 187 174 162 153 143 135 127 120 108 108 54 ROSC Kohm 270 240 220 200 180 160 150 130 120 110 100 91 82 ® Sampling Frequency KHz 5.2 6 6.5 7.1 7.875 8.72 9.25 10.5 11.2 12.5 13 14 16.3 Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 ISSI IS22C012 ® TIMING WAVEFORMS 1. Level, Unholdable, Non-retriggerable a. Trigger is shorter than a Group output b. Trigger is longer than a Group output S1 S2 Group 2 COUT Group 1 Group 2 Group 2 LED STP 2. Level Holdable a. Trigger is shorter than a Group output b. Trigger is longer than a Group output S1 S2 Group 2 COUT Group 1 Group 2 Group 2 LED 3. Single Button Trigger (SBT), Sequential a. Level Unholdable SBT COUT Group 1 Group 2 Group 2 Group 2 Group N Group 1 Group 2 Group 2 Group 2 Group N Group 1 b. Level Holdable SBT COUT Group 1 Where N is up to 8. Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 7 ISSI IS22C012 4. Edge, Unholdable, Non-retriggerable a. Trigger is shorter than a Group output ® b. Trigger is longer than a Group output S1 S2 COUT Group 2 Group 1 Group 2 STP LED 5. Edge Holdable a. Trigger is shorter than a Group output b. Trigger is longer than a Group output S1 S2 COUT Group 2 Group 1 Group 2 LED 6. Single Button Trigger (SBT), Sequential a. Edge Unholdable SBT COUT Group 1 Group 2 Group N Group 1 Group 2 Group N Group 1 b. Edge Holdable SBT COUT Group 1 Where N is up to 8. 8 Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 ISSI IS22C012 ® APPLICATION CIRCUITS TYPICAL APPLICATION Vcc ROSC SP OSC S1 S2 S3 S4 SBT IRP Vcc VOUT1 ROSC OSC COUT S1 S2 S3 S4 SBT IRP R GND VOUT2 C PIEZO BUZZER OR 32/64 OHM SPEAKER GND CASCADE APPLICATION Vcc ROSC OSC Vcc ROSC SP OSC COUT COUT SBT IRP R SBT OUT3 GND IRP GND Notes: 1. To direct dirve a speaker or buzzer, C is needed (C = 0.1 µF). 2. R = 330 Ohm (if using transistor 8050 and Vcc = 4.5V). 3. SP = 8 Ohm speaker. 4. To determine the value of ROSC, refer to the Sampling Frequency vs. ROSC tables on page 6. Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 9 ISSI IS22C012 ® APPLICATION CIRCUITS PARALLEL APPLICATION Vcc ROSC OSC Vcc ROSC SP OSC COUT S1 S2 S3 S4 SBT IRP COUT S1 S2 S3 S4 SBT IRP GND R GND LED APPLICATION Vcc ROSC OSC S1 S2 S3 S4 SBT IRP SP COUT R OUT2 OUT1 GND Notes: The following are typical values: 1. ß of NPN transistor > 130. 2. SP = 8Ω. 1/4W. 3. Piezo buzzer resonant frequency = 1 KHz. 10 Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 ISSI IS22C012 ® APPLICATION CIRCUITS CDS APPLICATION Vcc ROSC SP OSC CDS COUT R SBT IRP GND 8-SEGMENT TRIGGER APPLICATION SW8 Vcc ROSC SW5 SW1 SW6 SP OSC S1 COUT SW2 S2 SW7 SW3 SW4 Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 R S3 S4 GND 11 ISSI IS22C012 ® ORDERING INFORMATION Commerical Range: 0°C to +70°C Order Part No. Package IS22C012X Unpackaged IS22C012P 300-mil Plastic DIP 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 1999 Integrated Silicon Solution, Inc. Reproduction in whole or in part, without the prior written consent of Integrated Silicon Solution, Inc., is prohibited. ISSI ® Integrated Silicon Solution, Inc. 2231 Lawson Lane Santa Clara, CA 95054 Tel: 1-800-379-4774 Fax: (408) 588-0806 E-mail: [email protected] www.issi.com 12 Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99