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Description
MICROCHIP AT27C512R-45PU EPROM, One Time Programmable, 45 ns, 64K x 8bit, 512 Kbit, 4.5 V to 5.5 V, DIP-28The AT27C512R 45PU is a 512K (64K x 8bit) one time programmable read only memory (OTP EPROM) device in 28 pin DIP package. This low power, high performance, 524288bit memory requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45ns by eliminating the need for speed reducing WAIT states on high performance microprocessor systems. The Atmel scaled CMOS technology provides high speed, low active power
The AT27C512R-45PU is a 512K (64K x 8bit) one time programmable read only memory (OTP EPROM) device in 28 pin DIP package. This low power, high performance, 524288bit memory requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45ns by eliminating the need for speed reducing WAIT states on high performance microprocessor systems. The Atmel scaled CMOS technology provides high speed, low active power consumption and significantly faster programming. The AT27C512R-45PU allows firmware to be stored reliably and to be accessed by system without delays of mass storage media. It has additional features to ensure high quality and efficient production use. The rapid programming algorithm reduces time required to program the device and guarantees reliable programming.
- Fast read access time of 45ns
- Low power CMOS operation
- Maximum standby current of 100µA
- Maximum active current of 20mA at 5MHz
- High reliability CMOS technology
- Rapid programming algorithm of 100µs/byte
- CMOS and TTL compatible inputs and outputs
- Integrated product identification code
- Operating temperature range from -40°C to 85°C
Applications
Embedded Design & Development
Product details
| EPROM Memory Configuration | 64K x 8bit |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Access Time | 45ns |
| No. of Pins | 28Pins |
| Memory Size | 512Kbit |
| Product Range | - |
| Memory Case Style | DIP |
| Supply Voltage Min | 4.5V |
| Packaging | Each |
| Supply Voltage Max | 5.5V |
| MSL | - |
Other details
| Brand | MICROCHIP |
| Part Number | AT27C512R-45PU |
| Quantity | Each |
| Technical Data Sheet EN |
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4.6 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Bright & Pretty Hot Pink.
Color: Pitaya Red, Color: Pitaya Red
Very pretty and bright. It’s thick and great quality. Strong grip and doesn’t come off easily. Easy to clean when it gets dirty. It also has a nice backing. I prefer the transparent bright pink backing than the clear version. I love the strong magnetic for when I position it upwards. It can be positioned downwards too.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Very protective iPad case
Color: 1-Navy Blue
This MoKo iPad case is excellent! It fits perfectly and provides great protection without adding bulk. The navy blue color looks very sleek, and the translucent back shell is a nice touch. It’s super magnetic, with great padding. The smart cover works flawlessly with the auto wake/sleep feature, and the cutouts line up perfectly for Touch ID. Lightweight, durable, and a fantastic value!
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Fits the new iPads. Buttons are easily accessible.
Color: 1-Navy Blue
Fits the new iPad. Buttons are easy to reach, and it protects the screen with a soft fell back. Easy white clean vinyl on the outside. It has open vent spots so your device can cool. Slim and sleek. A great value for the money. Buttons are easily accessible. High-quality.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Perfect, it fits like a glove.
Color: 1-Navy Blue
I really liked the sleeve, the navy blue color looks very elegant and the material feels resistant but soft to the touch. What I like the most is that the back is translucent, so you still see the design of the tablet.
It works great for watching videos because it stands firm when folding it, and turning off the screen alone when closing it is very practical. Because of the price it has, the quality is excellent.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Great Protective Case for My Mother’s iPad
Color: 2-Watermelon Red, Color: 2-Watermelon Red
I bought this case along with my mother’s new iPad, and it was the perfect choice. The watermelon red color looks beautiful with the pink iPad and gives it a very clean and stylish look. The case feels sturdy without adding too much weight, which makes it comfortable for her to carry around and use every day.
The stand feature works really well for watching videos, reading, and video calls. I also like that the case supports the auto wake and sleep function, which makes the iPad feel even more convenient and easy to use. The cutouts fit perfectly, and Touch ID still works without any issues.
The translucent back is a nice touch because it still lets the iPad color show through while keeping it protected from scratches and bumps. Overall, this case exceeded expectations and makes a great addition for anyone wanting both protection and style for their iPad.
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Reviewed in the United States on May 14, 2026