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| PartNumber | 93AA66A-I/P | 93AA66A-I/MS | 93AA66A |
| Description | EEPROM 512x8 - 1.8V | EEPROM 512x8 - 1.8V | |
| Manufacturer | Microchip | Microchip | Microchip Technology |
| Product Category | EEPROM | EEPROM | Memory |
| RoHS | Y | Y | - |
| Mounting Style | Through Hole | SMD/SMT | SMD/SMT |
| Package / Case | PDIP-8 | MSOP-8 | - |
| Memory Size | 4 kbit | 4 kbit | 4K (512 x 8) |
| Organization | 512 x 8 | 512 x 8 | 512 x 8 |
| Interface Type | Serial, 3-Wire, Microwire | Serial, 3-Wire, Microwire | Serial 3-Wire Microwire |
| Access Time | 250 ns | 250 ns | 250 ns |
| Data Retention | 200 Year | 200 Year | 200 Years |
| Maximum Clock Frequency | 1 MHz | 1 MHz | 1 MHz |
| Supply Current Max | 2 mA | 2 mA | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tube | Tube | Tube Alternate Packaging |
| Height | 3.3 mm | 0.85 mm | - |
| Length | 9.27 mm | 3 mm | - |
| Width | 6.35 mm | 3 mm | - |
| Brand | Microchip Technology | Microchip Technology | - |
| Operating Supply Current | 2 mA | 2 mA | 2 mA |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Product Type | EEPROM | EEPROM | - |
| Factory Pack Quantity | 60 | 100 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.032805 oz | 0.004938 oz | 0.004938 oz |
| Series | - | - | - |
| Package Case | - | - | MSOP-8 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Interface | - | - | Microwire, 3-Wire Serial |
| Voltage Supply | - | - | 1.8 V ~ 5.5 V |
| Supplier Device Package | - | - | 8-MSOP |
| Memory Type | - | - | EEPROM |
| Speed | - | - | 1MHz, 2MHz |
| Format Memory | - | - | EEPROMs - Serial |
| Supply Current Max | - | - | 2 mA |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 1.8 V |