| Part Number | AT27C040-15RC | AT27C080-15RC | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Memory Type | Non-Volatile | Non-Volatile | 
| Memory Format | EPROM | EPROM | 
| Technology | EPROM - OTP | EPROM - OTP | 
| Memory Size | 4Mb (512K x 8) | 8Mb (1M x 8) | 
| Memory Interface | Parallel | Parallel | 
| Clock Frequency | - | - | 
| Write Cycle Time - Word, Page | - | - | 
| Access Time | 150 ns | 150 ns | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C (TC) | 0°C ~ 70°C (TC) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 32-SOIC (0.445", 11.30mm Width) | 32-SOIC (0.445", 11.30mm Width) | 
| Supplier Device Package | 32-SOIC | 32-SOIC |