PDF IS22C012 Data sheet ( Hoja de datos )

Número de pieza	IS22C012
Descripción	VERSATILE 10 SEC INSTANT VOICE ROM
Fabricantes	ISSI
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No Preview Available ! www.DataSheet4U.com IS22C012 VERSATILE 10 SEC INSTANT VOICE ROM ISSI® 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 DESCRIPTwIONww.DataSheet4U.com 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 on- chip 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. 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 ramp- down function eliminates undesired noise at the end of playback. 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. © Copyright 1999, Integrated Silicon Solution, Inc. Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 DataSheet4 U .com 1 www.DataSheet4U.com 1 page www.DataSheet4U.com 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 ISSI® DC CHARACTERISTICS Symbol Parameter Description Test Conditions Min. VCC ISB IOP VIH VIL IOH IOL ICO ISTPH ISTPL ILED ∆F/F Operating Voltage 2.4 Standby Current Vcc = 3.0V, I/O Open — Operating Current Vcc = 3.0V, I/O Open — Input HIGH Voltage Vcc = 3.0V 2.5 Input LOW Voltage Vcc = 2.0V –0.3 VOUT HIGH Operating Current Vcc = 3.0V, VOUT = 3.0V — VOUT LOW Operating Current Vcc = 3.0V, VOUT = 0V — COUT Operating Current Vcc = 3.0V, VCOUT = 0.7V — STP HIGH Operating Current Vcc = 3.0V, VSTP = 3.0V — STP LOW Operating Current www.DataSheet4U.comLED Output Current Vcc = 3.0V, VSTP = 0V Vcc = 2.2V – 6.0V — 6 Frequency Stability (FOSC [3V] – FOSC [3.5V]) / FOSC (3.0V) — 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 µA µA V V mA mA mA mA mA mA % Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 DataSheet4 U .com 5 www.DataSheet4U.com 5 Page www.DataSheet4U.com IS22C012 APPLICATION CIRCUITS CDS APPLICATION CDS ISSI® ROSC Vcc OSC COUT SBT IRP GND R SP 8-SEGMENT TRIGGER APPLICATION SW8 Vcc wwSW5w.DatRaOSCSheet4U.com SP OSC SW1 COUT S1 SW6 SW2 S2 R SW7 S3 SW3 SW4 S4 GND Integrated Silicon Solution, Inc. — 1-800-379-4774 ADVANCE INFORMATION VP010-0B 02/24/99 DataSheet4 U .com 11 www.DataSheet4U.com 11 Page

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