Product Overview
60 Seconds of Analog Voice in a 28-Pin DIP
Condition
Unused New Old Stock, sold each from multiple pieces in stock, so the chip in the photo is representative of what ships rather than the individual unit you receive. On the photographed piece the white ink marking is fully legible: the ISD logo, 2560P, 0225 and CI090200. The leads are bright metal, evenly formed and straight in this view, with no solder, flux or board residue visible on them. Two shallow round depressions and a small dimple near one corner sit in the plastic top face; those are molding and orientation features of this package style, not damage. Only the top face is photographed, so the underside is not visible here, and the chip has not been installed or electrically tested.
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Product Overview
The ISD2560P is a single-chip voice record and playback IC from Information Storage Devices, part of the ChipCorder line that later carried on under Winbond and Nuvoton. The 2560 designation is the duration, 60 seconds, and the P suffix is the 28-pin plastic DIP, which is the package in the photo: a wide-body through-hole part on 0.1 inch pin pitch with 0.6 inch row spacing. What set the ChipCorder apart is that it stores audio as analog levels directly in nonvolatile memory cells, so the design around it needs no ADC, no DAC, no compression codec and no battery to hold the message. The rest of the signal chain is on the die as well: microphone preamplifier, automatic gain control, antialiasing and smoothing filters, and a speaker driver, all running from a single 4.5V to 5.5V supply. The photographed piece carries the ISD logo alongside 2560P over 0225 and CI090200; 0225 is the date code exactly as marked, and CI090200 reads as a lot or trace code rather than an orderable part number. Record-cycle endurance, addressing and control modes, and the full pinout are not confirmed here - verify against the ISD2500 series datasheet before use.
Key Features
- 60 seconds of record and playback time, the 60-second member of the ISD2500 ChipCorder family
- Direct analog storage in nonvolatile memory cells, with no ADC, DAC or compression in the signal path
- No battery or backup power needed to retain a recorded message
- ISD published 100-year typical message retention for the ChipCorder analog cells
- On-chip microphone preamplifier with automatic gain control
- On-chip antialiasing and smoothing filters
- On-chip speaker driver output
- Single supply operation, 4.5V to 5.5V
- PDIP-28 through-hole package, 0.1 inch pin pitch, 0.6 inch row spacing
- Photographed piece marked with the ISD logo, 2560P, 0225 and CI090200
Applications
- A maintenance tech bringing a 1990s voice annunciator panel back online and needing the exact 28-pin ChipCorder the board was laid out for
- A toy and novelty restorer replacing a dead voice chip on a through-hole board where a socket already exists
- A hobbyist breadboarding a voice prompt on 5V logic, where a DIP body beats wrestling with a fine-pitch surface-mount part
- A shop stocking spares for equipment whose spoken status alerts run on the ISD2500 series
Frequently Asked Questions
How is the audio actually stored on this chip?
As analog levels written directly into nonvolatile memory cells, not as digitized and compressed samples. That is the defining trait of the ChipCorder series, and it is why the surrounding circuit needs no converter chips and no battery to hold a message.
What supply voltage does it need?
A single supply in the 4.5V to 5.5V range, so ordinary 5V logic power suits it. Confirm your rail is stable before recording, and check current draw for your speaker load against the datasheet.
Is this the through-hole package?
Yes. The P suffix is the 28-pin plastic DIP, and the photo shows that package with its leads formed for through-hole mounting. Verify pinout and your chosen control mode against the datasheet before committing to a board layout.
Will my chip carry the same date code as the one in the photos?
Not necessarily. More than one piece is in stock, the photographed chip is representative, and the 0225 and CI090200 markings describe that piece. We do not promise marking parity across the rest of the stock.
What am I taking on if I buy one?
An unused ChipCorder that has never been installed, and one we have inspected visually but not powered up or recorded to, so it sells as-is on what the photos and the markings show. That is the honest trade: you get a clean, unbent, clearly marked 2560P at surplus terms rather than a tested-and-certified part, and if it is not what you expected the no-hassle guarantee stands behind it. Shipping is a flat $8 per order and free once your order passes $28, and orders leave our Idaho warehouse the same or next business day.
Before every talking device hid a codec and an audio file, ISD stored the voice itself as levels in memory cells, no bits involved. If you have a board waiting to hear a 2560P answer back, this one still has its 60 seconds to give.
