ISD系列ISD4003芯片概述及解密

　龙芯世纪科技芯片解密事业部在IC解密/单片机解密/芯片解密技术研究领域中取得了丰硕的科研成果，拥有数十项独家解密技术和百余种业界领先的特色解密方案，在国内外反向技术研究领域奠定了行业领导者的权威地位。
　自成立以来，龙芯世纪科技芯片解密事业部主攻单片机解密（MCU解密）、芯片解密、PLD芯片解密、CPLD芯片解密、FPGA解密、DSP芯片解密、ARM芯片解密，软件解密，单片机软硬件开发等技术研究，长期专注加密芯片功能的设计和软件算法的研究、算法的软件实现，如：des加密、对称加密、md5加密等加解密算法的研究，及其硬件功能的实现、系统软件的开发和芯片底层驱动的设计，在MCU/CPLD/SPLD/PLD芯片解密技术的领域积累了丰富的开发经验。
   The ISD4003 ChipCorder? Products provide high-quality, 3-volt, single-chip Record/Playback solutions for 4- to 8-minute messaging applications which are ideal for cellular phones and other portable 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 ISD4003 series is designed to be used in a microprocessor- 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 memory in their natural form, providing high-quality, solid-state voice reproduction.
FEATURES
?Single-chip voice Record/Playback solution
?Single +3 volt supply
?Low-power consumption
–Operating current:
  ICC Play = 15 mA (typical)
  ICC Rec = 25 mA (typical)
–Standby current: 1 ?A (typical)
?Single-chip durations of 4, 5, 6, and 8 minutes
?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

　以上是我们针对ISD4003语音芯片的主要特征进行简单介绍，供广大客户及其他芯片解密工程师在解密项目合作及芯片技术应用中参考借鉴。如果客户有ISD4003芯片解密以及其他ISD芯片解密需求，请与龙芯世纪科技联系咨询更多合作详情
　　龙芯世纪科技芯片解密咨询电话：0755-83676393
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