ISD/Winbond · 2727 North First Street, San Jose, CA 95134 · TEL: 408/943-6666 · FAX: 408/544-1787 · http://www.isd.com

August 2000

Figure: ISD4004 Series Block Diagram

GENERAL DESCRIPTION

The ISD4004 ChipCorder

®

Products

provide

high-

quality, 3-volt, single-chip record/playback solu-

tions for 8- to 16-minute messaging applications

which are ideal for cellular phones and other por-

table products. The CMOS-based devices include

an on-chip oscillator, antialiasing filter, smoothing

filter,

AutoMute™

feature,

audio

amplifier,

and

high density, multilevel Flash storage array. The

ISD4004 series is designed to be used in a micro-

processor-

or

microcontroller-based

system.

Ad-

dress 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 memory in their natural form, providing

high-quality, solid-state voice reproduction.

ISD4004 Series

Single-Chip Voice Record/Playback Devices

8-, 10-, 12-, and 16-Minute Durations