| PartNumber | AT27C040-70JU | AT27C040-70JC | AT27C040-70JI |
| Description | EPROM 4Mb (512Kx8) OTP 5V 70ns | EPROM 512kx8 70ns | IC EPROM 4M PARALLEL 32PLCC |
| Manufacturer | Microchip | Microchip | Atmel |
| Product Category | EPROM | EPROM | Memory |
| RoHS | Y | N | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | PLCC-32 | PLCC-32 | - |
| Type | OTP | OTP | - |
| Memory Size | 4 Mbit | 4 MB | 4M (512K x 8) |
| Organization | 512 k x 8 | 512 k x 8 | - |
| Interface Type | Parallel | Parallel | - |
| Operating Supply Current | 100 uA | 30 mA | - |
| Programming Voltage | 13 V | 13 V | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Series | AT27C040 | AT27C040 | - |
| Packaging | Tube | - | Tube |
| Access Time | 70 ns | 70 ns | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Moisture Sensitive | Yes | - | - |
| Operating Supply Voltage | 5 V | 2.7 V to 3.6 V | - |
| Output Enable Access Time | 30 ns | 30 ns | - |
| Product Type | EPROM | EPROM | - |
| Factory Pack Quantity | 32 | 32 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.082118 oz | - | - |
| Package Case | - | - | 32-LCC (J-Lead) |
| Operating Temperature | - | - | -40°C ~ 85°C (TC) |
| Interface | - | - | Parallel |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 32-PLCC |
| Memory Type | - | - | EPROM OTP |
| Speed | - | - | 70ns |
| Format Memory | - | - | EPROMs |