| PartNumber | AT27C512R-45JU-T | AT27C512R-45JU | AT27C512R-45JC |
| Description | EPROM 45NS, PLCC, IND TEMP, GREEN | EPROM 512Kb (64Kx8) OTP 5V 45ns | EPROM 512k bit |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EPROM | EPROM | EPROM |
| RoHS | Y | Y | N |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | PLCC-32 | PLCC-32 | PLCC-32 |
| Type | OTP | OTP | OTP |
| Memory Size | 512 kbit | 512 kbit | 512 kB |
| Organization | 64 k x 8 | 64 k x 8 | 64 k x 8 |
| Interface Type | Parallel | Parallel | Parallel |
| Operating Supply Current | 20 mA | 100 uA | 20 mA |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | AT27C512R | AT27C512R | AT27C512R |
| Packaging | Reel | Tube | - |
| Access Time | 45 ns | 45 ns | 45 ns |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Operating Supply Voltage | 4.5 V to 5.5 V | 5 V | 2.7 V to 3.6 V |
| Product Type | EPROM | EPROM | EPROM |
| Factory Pack Quantity | 750 | 32 | 32 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Programming Voltage | - | 13 V | 13 V |
| Moisture Sensitive | - | Yes | - |
| Output Enable Access Time | - | 20 ns | 20 ns |
| Unit Weight | - | 0.074992 oz | - |