| PartNumber | AT27C1024-12JI | AT27C1024-12PC | AT27C1024-12JC |
| Description | EPROM 1M bit | EPROM 1M bit | EPROM 1M bit |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EPROM | EPROM | EPROM |
| RoHS | N | N | N |
| Mounting Style | SMD/SMT | Through Hole | SMD/SMT |
| Package / Case | PLCC-44 | PDIP-40 | PLCC-44 |
| Type | OTP | OTP | OTP |
| Memory Size | 1 Mbit | 1 MB | 1 MB |
| Organization | 64 k x 16 | 64 k x 16 | 64 k x 16 |
| Interface Type | Parallel | Parallel | Parallel |
| Operating Supply Current | 30 mA | 30 mA | 30 mA |
| Programming Voltage | 13 V | 13 V | 13 V |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Minimum Operating Temperature | 0 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 70 C | + 85 C |
| Series | AT27C1024 | AT27C1024 | AT27C1024 |
| Access Time | 120 ns | 120 ns | 120 ns |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Operating Supply Voltage | 5 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Output Enable Access Time | 35 ns | 35 ns | 35 ns |
| Product Type | EPROM | EPROM | EPROM |
| Factory Pack Quantity | 27 | - | 27 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Unit Weight | 0.084185 oz | 0.210004 oz | 0.084185 oz |