The ISD4002 ChipCorder series provides high-quality, 3-volt, single-chip record/playback solutions for 2 to 4 minute messaging applications ideally for cellular phones and other portable products. The CMOS-based devices include an on-chip oscillator anti-aliasing filter smoothing filter AutoMute feature audio amplifier and high density multilevel Flash memory array. The ISD4002 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 into the on-chip Flash memory cells!Bproviding zero-power message storage. This unique single-chip solution utilizes Nuvoton!|s patented multilevel storage technology. Voice and audio signals are directly stored onto memory array in their natural form!Bproviding high-quality voice reproduction.