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ISD1000A Series
Single-Chip Voice Record/Playback Devices 16- and 20-Second Durations
FEATURES
• • • Easy-to-use single-chip voice Record/Playback solution High-quality, natural voice/audio reproduction Manual switch or microcontroller compatible – Playback can be edge- or levelactivated Single-chip durations of 16 and 20 seconds Directly cascadable for longer durations Power-down mode – 1 µA standby current (typical) Zero-power message storage – Eliminates battery backup circuits • • • • • • • • Fully addressable to handle multiple messages 100-year message retention (typical) 100,000 record cycles (typical) On-chip clock source No algorithm development required Single +5 volt supply Available in die form, DIP, and SOIC packaging Industrial temperature (-40°C to +85°C) version available
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ISD1000A SERIES SUMMARY
Part Number ISD1016A ISD1020A Duration (Seconds) 16 20 Input Sample Rate (KHz) 8 6.4 Typical Filter Pass Band (KHz) 3.4 2.7
Information Storage Devices, Inc.
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ISD1000A Series
Product Data Sheets
GENERAL DESCRIPTION
Information Storage Devices’ ISD1000A ChipCorder® Series provides high-quality, single-chip record/playback solutions for 16- and 20-second messaging applications. The CMOS devices include an on-chip oscillator, microphone preamplifier, automatic gain control, antialiasing filter, smoothing filter, and speaker amplifier. In addition, the ISD1000A Series is fully microprocessorcompatible, allowing complex messaging and addressing to be achieved. 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.
DETAILED DESCRIPTION
The ISD1000A ChipCorder Series devices are designed to Record and Play back audio and voice information in a single chip with a minimum of circuit complexity. This compact, easy-to-use, nonvolatile, low-power solution has been made possible by ISD's multilevel storage technology — a breakthrough in storage technology in EEPROM. ISD’s multilevel storage technology results in storage density that is eight times greater than digital memory. The ISD1000A nonvolatile analog array consists of 128K cells — the equivalent of 1 Mbits of digital storage. The ISD1000A Series eliminates the need for digital conversion, digital compression, and voice synthesis techniques which often compromise voice quality and are more complicated to use. The ISD1000A Series includes signal conditioning circuits and control functions which enable a complete, high-quality Recording and Playback system in a single device. The ISD1000A is available in two versions, which store voice in 16- or 20-second arrays. Additional devices may be cascaded
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ISD1000A SERIES BLOCK DIAGRAM
Internal Clock XCLK 5-Pole Active Antialiasing Filter
Timing Sampling Clock
R
ANA IN ANA OUT MIC MIC REF AGC PreAmp
Amp
Analog Transceivers Decoders 128 K Cell Nonvolatile Multilevel Storage Array 5-Pole Active Smoothing Filter SP+ Mux Amp SP–
Automatic Gain Control (AGC) Power Conditioning Address Buffers Device Control
VCCA VSSA VSSD VCCD
A0 A1 A2 A3 A4 A5 A6 A7
PD
P/R
CE
EOM AUX IN
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Product Data Sheets
ISD1000A Series
ISD1000A SERIES PINOUTS
M0/A0 M1/A1 M2/A2 M3/A3 M4/A4 M5/A5 NC NC A6 A7 AUX IN VSSD VSSA SP+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15
assures the lowest possible overall power consumption.
VCCD P/R XCLK EOM PD CE NC ANA OUT ANA IN AGC MIC REF MIC VCCA SP–
DIP/SOIC
On-chip control functions make the ISD1000A Series very easy to use in a wide array of applications. Each device offers a variety of operating modes and interface options. The devices may be used in applications that require little more than a few switches and a battery. The devices may also be integrated into electronic systems where digital addresses can be provided for more sophisticated message addressing and control. The ISD1000A array is organized into 160 segments. Addresses A0 through A7 provide access to each segment in the array for message addressing. Addressing provides the capability of constructing messages by combining stored phrases and sounds.
to achieve longer recording durations. The nonvolatile storage array is based on productionproven, low-power CMOS EEPROM technology. The highly integrated ISD1000A Series contains all the basic functions required for high-quality voice Recording and Playback. The noise-cancelling Microphone Preamplifier and Automatic Gain Control (AGC) record both low-volume and highvolume sounds. The AGC attack and release times are adjusted by an external resistor and capacitor. Antialiasing is performed by a continuous fifth-order Chebyshev filter, requiring no external components or clocks to give toll-quality reproduction. The low corner of the passband.