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Description
MICROCHIP 25LC640-I/P EEPROM, SPI, 64 Kbit, 8K x 8bit, 2 MHz, DIP, 8 PinsThe 25LC640 I P is a 64kB serial Electrically Erasable Programmable Read Only Memory (EEPROM) accessed via a simple serial peripheral interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a chip select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on
The 25LC640-I/P is a 64kB serial Electrically Erasable Programmable Read-Only Memory (EEPROM) accessed via a simple serial peripheral interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a chip select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of chip select, allowing the host to service higher priority interrupts.
- Low-power CMOS technology
- Write cycle time - 5ms maximum
- Self-timed erase and write cycles
- Block write protection - Protect none, 1/4, 1/2 or all of array
- Built-in write protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
- Sequential read
- High reliability
- Data retention - >200 years
- ESD protection - >4000V
Applications
Computers & Computer Peripherals, Industrial, Communications & Networking, Consumer Electronics, Automotive
Product details
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Clock Frequency | 2MHz |
| No. of Pins | 8Pins |
| Memory Size | 64Kbit |
| Product Range | 64Kbit Serial SPI EEPROMs |
| Memory Case Style | DIP |
| Supply Voltage Min | 2.5V |
| IC Interface Type | SPI |
| EEPROM Memory Configuration | 8K x 8bit |
| Packaging | Each |
| Supply Voltage Max | 5.5V |
| MSL | - |
Other details
| Brand | MICROCHIP |
| Part Number | 25LC640-I/P |
| Quantity | Each |
| Technical Data Sheet EN | |
| Miscellaneous EN | |
| Product Change Notice EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.5 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
No stuffing, but...
Color: Blue&Purple&Orange
No stuffing,which is nice, but not very durable. Dog broke through day 1.
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Reviewed in the United States on December 27, 2025
★★★★★ 5
GREAT TOYS FOR BIRDING DOGS.
Color: Blue&Purple&Orange
I would purchase these again!! These have lasted for the past four years with four dogs. My dogs love carrying these around and tossing them into the air. I have Vizslas, they are not heavy chewers, but love carrying toys in their mouths.
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Reviewed in the United States on March 8, 2026
★★★★★ 1
Worthless Dog Toy
Color: Blue
Buyer beware! This item is worthless - if I could rate it -5*, I would. It was delivered this morning and was destroyed literally within 10 minutes. The squeaker was punctured and two of the crinkle legs were stripped by my Shichon.
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Reviewed in the United States on April 5, 2026
★★★★★ 3
Fun for a few minutes but beware!
Color: Blue&Purple&Orange, Color: Blue&Purple&Orange
I have 3 dogs so looking for multipacks of the same style toy is great so there is less squabbling between who gets what toy.
I have a border collie puppy, a 4 yr old Irish wolfhound cross and a 17 yr old border collie. These toys were loved by each one of my dogs.
The toys are floppy and easy to squeak in the octopus head. So much so that my elderly boy could happily play and make it squeak. He even collected the toys up and took them to his bed!
My puppy ran off bounding through the house squeaking the octopus' head with the tentacle-legs flying everywhere as she ran around, so the entertainment value is pretty high!
My Irish wolfhound loved the crinkling on the tentacles of the octopus and went straight for tearing into the orange toy pulling out the plastic, then pulling out the squeaker. The toy did ok with a game of tuggy (tug-o-war) with him and this toy would have been a great reward during a training session.
The fabric is not very tough so this is not a toy for aggressive chewers. Legs were easily chewed off and unfortunately were ingested by one of my dogs which caused them to vomit repeatedly throughout the night. Same with the squeaker, they are thin, soft plastic. So if your dog is a voracious chewer, give these a miss.
What I liked about these toys:
1. They were reasonably priced for 3 toys
2. These are not small toys! They are great for medium and large dogs.
3. Very fun for the dogs to play with.
4. No stuffing to clean up
What I didn't like:
1. Toys are not durable for tough tuggers.
2. The toys are not reinforced for chewing.
3. Squeaker not strong enough.
The toys just didn't last. There was maybe 15 minutes of play time at most before the chewing and destruction of the toys really got started.
I might buy these again if I can give my puppy better supervision for her chewing these and trying to stop her from ingesting the pieces she is chewing off put I probably won't buy them again. There's too much plastic that can be eaten with the crinkly plastic in the legs.
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Reviewed in the United States on December 22, 2021
★★★★★ 5
It's a winner!
Color: Blue&Purple&Orange, Color: Blue&Purple&Orange
Sturdy, pup loves all 3. Nice size. Has squeaker in head AND crinkle in the tentacles He sleeps with them and carries them around. It's a favorite
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Reviewed in the United States on December 31, 2025