ISD MicroTAD-16M
Single-Chip Voice Record/Playback Device
16-Minute Duration
Preliminary Data Sheet
GENERAL DESCRIPTION
The ISD MicroTAD-16M ChipCorder
廬
Product pro-
vides high-quality, 3-volt, single-chip record/play-
back solutions for 16-minute messaging
applications which are ideal for telephone an-
swering devices (TADs). The CMOS-based devices
include an on-chip oscillator, antialiasing filter,
smoothing filter, AutoMute鈩?feature, audio ampli-
fier, and high density, multilevel Flash storage ar-
ray. The ISD MicroTAD-16M is designed to be used
in a microprocessor- or microcontroller-based sys-
tem. Address and control are accomplished
through a Serial Peripheral Interface (SPI) or Mi-
crowire 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鈥檚 patented multilevel storage
technology. Voice and audio signals are stored
directly into memory in their natural form, providing
high-quality, solid-state voice reproduction.
Figure: ISD MicroTAD-16M Block Diagram
May 1999
ISD 路 2727 North First Street, San Jose, CA 95125 路 TEL: 408/943-6666 路 FAX: 408/544-1787 路 http://www.isd.com