Variable record playback IC     8-16 second

          Nuvoton’s ISD1820PY ChipCorder® provides high-quality, single chip, single-message, record/playback solution with user-selectable durations of 6 to 16 seconds. The CMOS devices include an on-chip oscillator (with external control), microphone preamplifier, automatic gain control, anti-aliasing filter, multilevel storage array, smoothing filter, and speaker amplifier. A minimum record/playback subsystem can be configured with a microphone, a speaker, several passive components, two push buttons, and a power source. Recordings are stored in on-chip nonvolatile memory cells, providing zero-power message storage. This unique, single-chip solution is made possible through Nuvoton’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

•   Easy-to-use single-chip, single-message voice record/playback solution
•   High-quality, natural voice/audio reproduction
•   Push-button interface. Playback can be edge- or level-activated
•   Variable record/playback duration controlled by external resistor selection, which sets sample rate.

Sample Rate          8 KHz        6.4 KHz       5.3 KHz       4 HKz
Duration (1810)     8 secs      10 secs       12 secs    16 secs
ROSC                      80 KΩ       100 KΩ        120 KΩ     160 KΩ

•    Automatic power-down mode
•   On-chip 8Ω speaker driver
•   Zero-power message storage Eliminates battery backup circuits
•   100-year message retention (typical)
•   100,000 record cycles (typical)
•   On-chip oscillator
•   No algorithm development required
•   Single +3 volt power supply
•   28-pin 600mil PDIP available for samples only