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Description
MICROCHIP 93C66C-I/P EEPROM, Microwire, Serial Microwire, 4 Kbit, 512 x 8bit / 256 x 16bit, 3 MHz, DIP, 8 PinsThe 93C66C I P is a 4kB MICROWIRE compatible serial Electrically Erasable Programmable Read Only Memory (EEPROM) with word selectable devices such as the 93AA66C, 93LC66C or 93C66C are dependent upon external logic levels driving the ORG pin to set word size. The device provides dedicated 16 bit communication. Advanced CMOS technology makes this device ideal for low power, nonvolatile memory applications. Low power CMOS technology Self timed erase
The 93C66C-I/P is a 4kB MICROWIRE compatible serial Electrically Erasable Programmable Read-Only Memory (EEPROM) with word-selectable devices such as the 93AA66C, 93LC66C or 93C66C are dependent upon external logic levels driving the ORG pin to set word size. The device provides dedicated 16-bit communication. Advanced CMOS technology makes this device ideal for low-power, nonvolatile memory applications.
- Low-power CMOS technology
- Self-timed erase/write cycles
- Automatic erase all (ERAL) before write all (WRAL)
- Power-on/off data protection circuitry
- Industry standard 3-wire serial I/O
- Device status signal (ready/busy)
- Sequential read function
- 1000000 Erase/write cycles
- Data retention >200 years
Applications
Computers & Computer Peripherals, Industrial, Communications & Networking, Consumer Electronics, Automotive
Product details
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Clock Frequency | 3MHz |
| No. of Pins | 8Pins |
| Memory Size | 4Kbit |
| Product Range | 4Kbit Serial Microwire EEPROMs |
| Memory Case Style | DIP |
| Supply Voltage Min | 4.5V |
| IC Interface Type | Serial Microwire |
| EEPROM Memory Configuration | 512 x 8bit / 256 x 16bit |
| Packaging | Each |
| Supply Voltage Max | 5.5V |
| MSL | - |
Other details
| Brand | MICROCHIP |
| Part Number | 93C66C-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.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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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]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Fits passport and other important travel documents easily and safely
Color: Haze Blue+Dusty Blue, Size: Large
Beautiful color, great quality for the money, easy to use I was able to put my passport and other documents in one secure place. Fits perfectly with no heavy luggage to carry it in. Highly recommend for the traveler
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Reviewed in the United States on February 6, 2026
★★★★★ 5
Stunning Automatic Watch With TopTier Durability and Precision
Color: Grey
“I got this Tissot PRX for my cousin’s birthday and bro fell in LOVE instantly.
This thing keeps time like a beast, never slows down, never lags. Automatic movement, so no batteries, no drama.
Durability? Stupid good. You can hit it, bump it, live life rough, it still looks box fresh.
Size wise it was almost perfect. I just had to remove two links, nothing big.
It’s light, functional, comfortable, doesn’t weigh you down, doesn’t get in the way but more importantly I can say this watch is in everyone’s eyesight when we wear it. Cause of course I had to get another one!
Basically. I gave him a very nice piece as a gift, and now he’s walking around like he owns Switzerland.
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Reviewed in the United States on December 11, 2025
★★★★★ 5
Great watch!!!!
Color: Grey
Excellent quality, one of the best, elegant.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Excellent value for an automatic watch, keeps VERY good time.
Color: Grey, Color: Grey
I've only had the watch for a day but wanted to leave a quick review on it to share a couple of notes.
So far it keeps VERY good time, better than any of the automatics I own (including a Rolex Submariner, Tag Heuer Aquaracer, Tag Heuer Formula One, and several other sub $1k watches). I set it to an atomic time app on my phone yesterday and 24 hours later it's still SPOT on - hasn't gained/lost even a 1/10 of a second. I was shocked to see it's kept PERFECT time for the last day, I'm really blown away so far. I've worn it the entire time, we'll see how well it keeps time while being stored in a winder.
This picture shown is the watch with a 22mm leather band on it, fit's without any issues (just need to squeeze in the leather a tad). I doubt it would work with a 22mm metal bracelet, but leather works great. Just FYI since the 21mm lug width is kind of odd.
The face isn't quite a lustrious as the images make it look, but it's still a great-looking watch. For a sub $1000 automatic you can't go wrong, this is a fantastic watch at a great price. It'll be my daily driver for some time I'm sure. If I have any issues in the future I'll update the review.
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Reviewed in the United States on March 22, 2021
★★★★★ 5
It looks really cool and striking.
Color: Grey, Color: Grey
Really cool and beautiful watch. Although my specific unit runs 5 seconds fast every day—at first it’s annoying, but eventually you stop caring. 🤣
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Reviewed in the United States on April 16, 2026