ISD4002 Series
Single-Chip Voice Record/Playback Devices
120-, 150-, 180-, and 240-Second Durations
GENERAL DESCRIPTION
The ISD4002 ChipCorder
®
products provide high-
quality, 3-volt, single-chip record/playback solu-
tions for 2- to 4-minute messaging applications
ideal for cellular phones and other portable prod-
ucts. The CMOS-based devices include an on-
chip oscillator, anti-aliasing filter, smoothing filter,
AutoMute™ feature, audio amplifier, and high
density, multilevel Flash storage array. The
ISD4002 series is designed to be used in a micro-
processor- or microcontroller-based system.
Address and control are accomplished through a
Serial Peripheral Interface (SPI) or Microwire Serial
Interface to minimize pin count.
Recordings are stored in on-chip nonvolatile
memory cells, providing zero-power message
storage. This unique, single-chip solution is made
possible through ISD’s patented multilevel storage
technology. Voice and audio signals are stored
directly into solid-state memory in their natural
form, providing high-quality voice reproduction.
Figure: ISD4002 Series Block Diagram
June 2000
ISD/Winbond · 2727 North First Street, San Jose, CA 95134 · TEL: 408/943-6666 · FAX: 408/544-1787 · http://www.isd.com
ISD4002 Series
FEATURES
•
Single-chip voice record/playback solution
•
Single +3 volt supply
•
Low-power consumption
–
Operating current:
I
CC
Play = 15 mA (typical)
I
CC
Rec = 25 mA (typical)
–
Standby current: 1 µA (typical)
•
Single-chip durations of 120, 150, 180, and
240 seconds
•
High-quality, natural voice/audio reproduction
•
AutoMute feature provides background noise
attenuation during periods of silence
•
No algorithm development required
•
Microcontroller SPI or Microwire™ Serial
Interface
•
Fully addressable to handle multiple
messages
•
Nonvolatile message storage
•
Power consumption controlled by SPI
or Microwire control register
•
100-year message retention (typical)
•
100K record cycles (typical)
•
On-chip clock source
•
Available in die form, PDIP, SOIC, TSOP, and
chip scale packaging (CSP)
•
Extended temperature (–20°C to +70°C) and
industrial temperature (–40°C to +85°C)
versions available
Table: ISD4002 Series Summary
Part
Number
ISD4002-120
ISD4002-150
ISD4002-180
ISD4002-240
Duration
(seconds)
120
150
180
240
Input Sample
Rate (KHz)
8.0
6.4
5.3
4.0
Typical Filter Pass Band
(KHz)
3.4
2.7
2.3
1.7
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Figure 1: ISD4002 Series TSOP and PDIP/SOIC Pinouts
ISD4002
ISD4002
28-PIN TSOP
PDIP/SOIC
ISD
1