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IS22C012
VERSATILE 10 SEC INSTANT VOICE ROM
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 * * * * * * * * * * *
ISSI
ADVANCE INFORMATION FEBRUARY 1999
(R)
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 A at 3V) Development tools support
GENERAL DESCRIPTION
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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.
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. 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. 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 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. An example of group configuration is illustrated below: Group No. Group 1 Group 2 Group 3 Group 4 Section Entry Sec 1 + Sec 2 + Sec 3 ....... Sec 109 Sec 3 + Sec 2 Sec 10 + Sec 11 + Sec 12 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. (c) Copyright 1999, Integrated Silicon Solution, Inc.
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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.
ISSI
Selections in Output Buffer
(R)
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.
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
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 1. 2. 3. 4. LED1 STOP Busy LED2 OUT2 LED2 LED1 Stop Busy OUT3 Busy LED2 LED1 Stop
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.
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.
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Software Support
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
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.
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IS22C012
BLOCK DIAGRAM
ISSI
OSCILLATOR ADDRESS SEQUENCER CLOCK GENERATOR ADPCM DECODER CONTROL LOGIC POP NOISE REDUCTION OUTPUT DRIVER BUZZER BUFFER VOUT1 VOUT2 VCC
(R)
OSC
VOICE EPROM
GND
S1 S2 S3 S4 SBT IRP OUT1 OUT2 OUT3
D/A
COUT
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IS22C012
PIN CONFIGURATIONS
300-mil PDIP
OUT1 VOUT1 VOUT2 GND OUT2 OUT3 COUT OSC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IRP SBT S4 S3 VCC S2 S1 VPP
ISSI
PIN DESCRIPTION
OUT1 OUT2 OUT3 VOUT1 VOUT2 GND COUT OSC VPP S1 S2 VCC S3 S4 SBT IRP Programmable output 1 Programmable output 2 Programmable output 3 PWM audio signal output for buzzer and speaker PWM audio signal output for buzzer and speaker Power ground Current output from internal DAC for speaker playback Oscillator resistor pin to control sampling frequency
(R)
Program power supply, no connect when voice playback Trigger switch 1, internal pull low, active high Trigger switch 2, internal pull low, active high Positive power supply Trigger switch 3, internal pull low, active high Trigger switch 4, internal pull low, active high Sequential trigger, internal pull low, active high Interrupt to stop playback, internal pull low, active high
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BONDING DIAGRAM
Pin 1 2
12 11 10 9 8 7 6 5
NC
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
Name OUT1 VOUT1 VOUT2 GND OUT2 OUT3 COUT OSC VPP S1 S2 VCC S3 S4 SBT IRP X 204 423 718 893 786 590 167 -89 -306 -483 -691 -899 -796 -588 -380 -172 Y -678 -678 -678 -678 677 677 677 677 677 677 677 677 -678 -678 -678 -678
3 4 5 6 7 8 9 10 11 12 13 14 15 16
Y X (0,0)
13 14
15
16
NC
1
2
3
4
Note: Substrate must be connected to GND Pad size = 80 m x 80 m Die size = 2128 x 1635 m 83.78 x 64.37 mil
Note: Programming requires connection to pins 4, 5, 6, 8, 9, 12, 15, and 16.
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IS22C012
ABSOLUTE MAXIMUM RATINGS
Symbol VCC - GND VIN VOUT TA TSTG Parameter Terminal Voltage with Respect to GND 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
ISSI
(R)
Operating Temperature Storage Temperature
DC CHARACTERISTICS
Symbol Parameter Description VCC ISB IOP VIH VIL IOH IOL ICO ISTPH ISTPL ILED F/F 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 Test Conditions Min. Typ. 3.0 1 -- 3.0 0 -12 12 -2 -5 5 8 -- Max. 6.0 5 100 3.5 0.3 -- -- -- -- -- 10 5 Unit V A A V V mA mA mA mA mA mA %
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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) --
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IS22C012
SAMPLING FREQUENCY vs ROSC FOR IS22C012
Common Sampling Rate vs. Oscillator Resistor 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 ROSC Kohm 290 262 240 219 201 187 174 162 153 143 135 127 120 108 108 54
ISSI
SAMPLING FREQUENCY vs ROSC FOR IS22C012
Common Resistors vs. Sampling Rate 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
(R)
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IS22C012
TIMING WAVEFORMS 1. Level, Unholdable, Non-retriggerable a. Trigger is shorter than a Group output
ISSI
b. Trigger is longer than a Group output
(R)
S1 S2 COUT LED STP
Group 2 Group 1 Group 2 Group 2
2. Level Holdable a. Trigger is shorter than a Group output
S1 S2 COUT LED
Group 2 Group 1
b. Trigger is longer than a Group output
Group 2
Group 2
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3. Single Button Trigger (SBT), Sequential a. Level Unholdable
SBT COUT
Group 1 Group 2 Group 2 Group 2 Group N Group 1
b. Level Holdable
SBT COUT
Group 1 Group 2 Group 2 Group 2 Group N Group 1
Where N is up to 8.
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IS22C012
4. Edge, Unholdable, Non-retriggerable a. Trigger is shorter than a Group output
ISSI
b. Trigger is longer than a Group output
S1 S2
Group 2 Group 1 Group 2
(R)
COUT STP LED
5. Edge Holdable a. Trigger is shorter than a Group output
S1 S2 COUT LED
Group 2 Group 1
b. Trigger is longer than a Group output
Group 2
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6. Single Button Trigger (SBT), Sequential a. Edge Unholdable
SBT COUT
Group 1 Group 2 Group N Group 1
b. Edge Holdable
SBT COUT
Where N is up to 8.
Group 1 Group 2 Group N Group 1
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IS22C012
APPLICATION CIRCUITS TYPICAL APPLICATION
ISSI
(R)
ROSC OSC S1 S2 S3 S4 SBT IRP
Vcc SP COUT R
ROSC OSC S1 S2 S3 S4 SBT IRP
Vcc VOUT1 VOUT2
C
PIEZO BUZZER OR 32/64 OHM SPEAKER
GND
GND
CASCADE APPLICATION
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ROSC OSC COUT SBT IRP SBT OUT3 GND IRP GND Vcc ROSC OSC Vcc SP COUT R
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 ROSC, refer to the Sampling Frequency vs. ROSC tables on page 6.
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IS22C012
APPLICATION CIRCUITS PARALLEL APPLICATION
ISSI
(R)
ROSC OSC S1 S2 S3 S4 SBT IRP
Vcc COUT
ROSC OSC S1 S2 S3 S4 SBT IRP
Vcc SP COUT R
GND
GND
LED APPLICATION
ROSC
Vcc
SP
COUT OSC www..com S1 S2 S3 S4 SBT IRP R
OUT2 OUT1 GND
Notes: The following are typical values: 1. of NPN transistor > 130. 2. SP = 8. 1/4W. 3. Piezo buzzer resonant frequency = 1 KHz.
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IS22C012
APPLICATION CIRCUITS CDS APPLICATION
ISSI
Vcc SP OSC COUT R SBT IRP GND
(R)
ROSC CDS
8-SEGMENT TRIGGER APPLICATION
SW8
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ROSC
SW1 SW6 SW2 SW5
Vcc
S1 S2
COUT
R
SW7
SW3 SW4
S3 S4 GND
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IS22C012
ORDERING INFORMATION Commerical Range: 0C to +70C
Order Part No. IS22C012X IS22C012P Package Unpackaged 300-mil Plastic DIP
ISSI
(R)
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.
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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
(R)
Integrated Silicon Solution, Inc.
2231 Lawson Lane Santa Clara, CA 95054 Tel: 1-800-379-4774 Fax: (408) 588-0806 E-mail: sales@issi.com www.issi.com
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