| PartNumber | AT27BV512-12TI | AT27BV512-70TI | AT27BV512-70RI |
| Description | EPROM 512k bit | EPROM 512Kb (64Kx8) OTP 2.7-3.6V 70ns | EPROM 512Kb (64Kx8) OTP 2.7-3.6V 70ns |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EPROM | EPROM | EPROM |
| RoHS | N | N | E |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TSOP-28 | TSOP-28 | SOIC-28 |
| Type | OTP | OTP | OTP |
| Memory Size | 512 kB | 512 kb | 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 | 20 mA | 20 mA |
| Programming Voltage | 13 V | 13 V | 13 V |
| Supply Voltage Max | 3.6 V, 5.5 V | 3.6 V, 5.5 V | 3.6 V, 5.5 V |
| Supply Voltage Min | 2.7 V, 4.5 V | 2.7 V, 4.5 V | 2.7 V, 4.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 55 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Access Time | 120 ns | 70 ns | 70 ns |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Operating Supply Voltage | 2.7 V to 3.6 V | 3.3 V, 5 V | 3.3 V, 5 V |
| Output Enable Access Time | 50 ns | 50 ns | 50 ns |
| Product Type | EPROM | EPROM | EPROM |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Factory Pack Quantity | - | 234 | 26 |
| Unit Weight | - | - | 0.078125 oz |