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PDF ISD1760A Data sheet ( Hoja de datos )
| Número de pieza | ISD1760A | |
| Descripción | (ISD1700A Series) Multi-Message Single-Chip Voice Record&Playback Devices | |
| Fabricantes | Winbond | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISD1760A (archivo pdf) en la parte inferior de esta página. Total 31 Páginas | ||
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ADVANCED
ISD1700A
Series
Multi-Message
Single-Chip
Voice Record & Playback Devices
Confidential
Publication Release Date: March 28, 2005
Revision A0
1 page  
www.DataSheet4U.com
ISD1700A SERIES
2 FEATURES
• Integrated message management systems for single-chip, push-button applications
o REC : level-trigger for recording
o PLAY : edge-trigger for individual message or level-trigger for sequential playback
o ERASE : edge-triggered erase for first or last message or level-triggered erase for all messages
o FWD : edge-trigger to advance to the next message or fast message scan during the playback
o VOL : 8 levels output volume control
o RDY: ready or busy status indication
o RESET : bring back to the default state
o Automatic power-down after each operation cycle
• Selectable sampling frequency controlled by an external oscillator resistor
Sampling Frequency
12 kHz
Rosc
60 kΩ
• Selectable message duration
8 kHz
80 kΩ
6.4 kHz
100 kΩ
5.3 kHz
120 kΩ
4 kHz
160 kΩ
Device
ISD1740A
Duration
26 ~ 80 sec
y Message and operation indicators
ISD1750A
33 ~ 100 sec
ISD1760A
40 ~ 120 sec
o Four customizable Sound Effects (SE) for audible indications
o Optional vAlert (voiceAlert) to indicate the presence of new messages
o LED: stay on during recording, blink during playback, forward and erase operations
y Two individual input channels
o MIC+/MIC-: differential microphone inputs with AGC (Automatic Gain Control)
o AnaIn: single-ended auxiliary analog input for recording or feed-through
y Dual output channels
o PWM Class D speaker amplifier to directly drive an 8 Ω speaker or a typical buzzer
o AUD single-ended current output to drive external power amplifier
• ChipCorder standard features
o High-quality, natural voice and audio reproduction
o 2.4V to 5.5V operating voltage
o 100-year message retention (typical)
o 10,000 record cycles (typical)
• Commercial Temperature grade: 0°C to +50°C for die only
y Package options: available in die only
Confidential
Publication Release Date: March 28, 2005
- 5 - Revision A0
5 Page 
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ISD1700A SERIES
6 FUNCTIONAL DESCRIPTION
6.1 DETAILED DESCRIPTION
6.1.1 Audio Quality
Winbond’s patented ChipCorder® Multi-Level Storage (MLS) technology provides a natural,
high-quality record and playback solution on a single chip. The input voice signals are stored
directly in the Flash memory and are reproduced in their natural form without any of the
compression artifacts caused by digital speech solutions.
6.1.2 Message Duration
The ISD1740A/50A/60A devices offer record and playback duration from 26 seconds to 120
seconds. Sampling rate and message duration are determined by an external resistor
connected to the ROSC pin.
Table 6.1 Duration vs. Sampling Frequency
Sample Rate
12 kHz
8 kHz
6.4 kHz
5.3 kHz
4 kHz
ISD1740A
26 sec
40 sec
50 sec
60 sec
80 sec
ISD1750A
33 sec
50 sec
62 sec
75 sec
100 sec
ISD1760A
40 sec
60 sec
75 sec
90 sec
120 sec
6.1.3 Flash Storage
The ISD1740A/50A/60A devices utilize embedded Flash memory to provide non-volatile
storage. A message can be retained for a minimum of 100 years without power. Additionally,
each device can be re-recorded over 10,000 times (typical).
6.2 MEMORY ARRAY ARCHITECTURE
The memory array provides storage for four special Sound Effects (SE) and the audio data. The
memory array is addressed by rows. A row is the minimum storage resolution by which the
memory can be addressed. The memory assignment is handled automatically by the internal
message management system.
The four sound effects occupy four rows of the first sixteen rows in the memory array. The
minimum storage resolution varies with the sampling frequency, as shown in Table 6.2.
Table 6.2 Minimum Storage Resolution vs. Sampling Frequency
Sampling Frequency
12 kHz
8 kHz
6.4 kHz 5.3 kHz
4 kHz
Minimum Storage Resolution 83.3 msec 125 msec 156 msec 187 msec 250 msec
For example, at 8 kHz sampling frequency, the minimum storage resolution is 125 msec, so, each
Sound Effect (SE) is approximately 0.5 seconds long. The remaining memory is dedicated to audio
data storage.
Confidential
- 11 -
Publication Release Date: March 28, 2005
Revision A0
11 Page | ||
| Páginas | Total 31 Páginas | |
| PDF Descargar | [ Datasheet ISD1760A.PDF ] | |
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