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PDF IS22C022 Data sheet ( Hoja de datos )
| Número de pieza | IS22C022 | |
| Descripción | VERSATILE 20 SEC INSTANT VOICE ROM | |
| Fabricantes | ISSI | |
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IS22C022
VERSATILE 20 SEC INSTANT
VOICE ROM
ISSI®
SEPTEMBER 1999
FEATURES
GENERAL DESCRIPTION
• Minimum 20 second voice length at 6 KHz
• Versatile features for playback
• Combination of voice building blocks
extends the duration of playback
IS22C022 is a high quality voice synthesizer capable of
varying playback duration. A proprietary ADPCM algorithm
is used. The audio message is stored in a 512K bits
on-chip EPROM which can store up to 20 seconds of
voice data at 6 KHz sample rate.
• Voice data re-use saves memory space
The IS22C022 eliminates the need of complicated circuitry
• Four trigger pins, S1 to S4 for eight groups
in voice playback but still achieves high voice quality.
Sounds such as human speech, animal sounds, musical
• SBT for sequential play-all or random play
sounds and even special sound effects can be synthesized.
• Holdable and unholdable, edge and level
triggering option
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
• 15 ms debounce time suitable for CDS
parallel in order to achieve signal mixing without an
• IRP interrupt pin for master reset
external mixer in which speech can be mixed with
background music each from one of two different chips.
• Three programmable output pins for STP Stop
Pulse, BUSY Signal, and LED
The IS22C022 provides wide operating voltage range
from 2.4V to 6.0V. PWM digital amplifier output pins,
• Built-in oscillator with variable sample rate
www.DataSheet4U.com• Single external resistor to determine sample rate
VOUT1 and VOUT2 provides direct drive to buzzer or
speaker.
• Built-in D/A converter, EPROM
A current output pin, COUT, enables the device to drive a
speaker through a low cost NPN transistor. No complex
• ADPCM data compression provides high sound
filtering or amplifier circuit is needed. An automatic
quality
ramp-down function eliminates undesired noise at the end
• Optional pop noise elimination function
of playback.
• COUT pin drives speaker with a transistor
Group of sections
• VOUT1 and VOUT2 drives buzzer or speaker di-
rectly
• Auto-power down
The voice data memory area of the IS22C022 can be
subdivided into 126 sections. Any combination of these
sections will form an individual group for data playback. A
maximum of eight groups are available with activation
• 2.4V-6V single power supply operation
• Low standby current (<5 µA at 3V)
controlled by S1 to S4 pins. The SBT pin can be used to
trigger multiple groups playback in sequence.
• Development tools support
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
Rev. A
11/15/99
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IS22C022
ISSI ®
DC CHARACTERISTICS
Symbol
VCC
ISB
IOP
VIH
VIL
IOH
IOL
ICO
ISTPH
ISTPL
ILED
ÐF/F
Parameter Description
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
Vcc = 3.0V, I/O Open
Vcc = 3.0V, I/O Open
Vcc = 3.0V
Vcc = 2.0V
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
(FOSC [3V] – FOSC [3.5V]) / FOSC (3.0V)
Min.
2.4
—
—
2.5
–0.3
—
—
—
—
—
6
—
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
%
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SAMPLING FREQUENCY vs
ROSC FOR IS22C022
Common Sampling Rate vs. Oscillator Resistor
SAMPLING FREQUENCY vs
ROSC FOR IS22C022
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
12.0
ROSC
Kohm
1,920
1,750
1,610
1,490
1,380
1,290
1,200
1,130
1,070
1,010
961
915
874
835
ROSC
Kohm
2000
1500
1300
1200
1000
910
820
750
680
560
510
470
Sampling Frequency
KHz
4.8
6.5
7.5
8.0
9.5
10.5
11.7
12.7
14.0
16.7
18.1
19.5
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. A
11/15/99
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IS22C022
ORDERING INFORMATION
Commerical Range: 0°C to +70°C
Order Part No.
IS22C022X
IS22C022P
Package
Unpackaged
300-mil Plastic DIP
ISSI ®
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
www.DataSheet4U.comor 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.
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. A
11/15/99
DataSheet4 U .com
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
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