ISD5116 Datasheet, PDF (6/57 Pages) Winbond – Single-Chip Voice Record/Playback Device Up to 16-Minute Duration with Digital Storage Capability

1. OVERVIEW
1.1 SPEECH/SOUND QUALITY
The ISD5116 ChipCorder product can be configured via software to operate at 4.0, 5.3, 6.4 and 8.0 kHz
sampling frequencies, allowing the user a choice of speech quality options. Increasing the duration
decreases the sampling frequency and bandwidth, which affects sound quality. The table in the following
section compares filter pass band and product durations.
1.2 DURATION
To meet end-system requirements, the ISD5116 device is a single-chip solution, which provides from 8 to
16 minutes of voice record and playback, depending on the sample rates defined by customer software.
Input Sample
Duration¹
Typical Filter Knee
Rate (kHz)
(kHz)
8.0
8 min 44 sec
3.4
6.4
10 min 55 sec
2.7
5.3
13 min 6 sec
2.3
4.0
17 min 28 sec
1.7
1. Minus any pages selected for digital storage
1.3 FLASH STORAGE
One of the benefits of ISD’s ChipCorder technology is the use of on-chip nonvolatile memory, which
provides zero-power message storage. The message is retained for up to 100 years (typically) without
power. In addition, the device can be re-recorded over 10,000 times (typically) for the digital messages
and over 100,000 times (typically) for the analog messages.
A new feature has been added that allows memory space in the ISD5116 to be allocated to either digital
or analog storage when recorded. The fact that a section has been assigned digital or analog data is
stored in the Message Address Table by the system microcontroller when the recording is made.
1.4 MICROCONTROLLER INTERFACE
The ISD5116 is controlled through an I²C 2-wire interface. This synchronous serial port allows
commands, configurations, address data, and digital data to be loaded to the device, while allowing
status, digital data and current address information to be read back from the device. In addition to the
serial interface, two other pins can be connected to the microcontroller for enhanced interface. These are
the RAC timing pin and the INT pin for interrupts to the controller. Communications with all the internal
registers are through the serial bus, as well as digital memory Read and Write operations.
1.5 PROGRAMMING
The ISD5116 series is also ideal for playback-only applications, where single or multiple messages may
be played back when desired. Playback is controlled through the I²C interface. Once the desired message
configuration is created, duplicates can easily be generated via a third-party programmer. For more
information on available application tools and programmers, please see the ISD web site at
www.winbond-usa.com
October 2000
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