| Part Number | AT27LV520-70SC | AT27LV520-70XC | 
|---|---|---|
| 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 | 512Kb (64K x 8) | 512Kb (64K x 8) | 
| Memory Interface | Parallel | Parallel | 
| Clock Frequency | - | - | 
| Write Cycle Time - Word, Page | - | - | 
| Access Time | 70 ns | 70 ns | 
| Voltage - Supply | 3V ~ 3.6V, 4.5V ~ 5.5V | 3V ~ 3.6V, 4.5V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C (TC) | 0°C ~ 70°C (TC) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 
| Supplier Device Package | 20-SOIC | 20-TSSOP |