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| PartNumber | RX-8581SA:B3:ROHS | RX-8581SA B (Q41858151000212) | RX-8581SA B (Q41858152000212) |
| Description | Real Time Clock 32.768KHz 3.0Volts 5+/-23ppm -40C +85C | RoHS (ship within 1day) | RoHS (ship within 1day) |
| Manufacturer | EPSON | - | - |
| Product Category | Clock/Timing - Real Time Clocks | - | - |
| Series | - | - | - |
| Product | Real Time Clocks | - | - |
| Type | Clock/Calendar | - | - |
| Packaging | Digi-ReelR Alternate Packaging | - | - |
| Unit Weight | 0.008501 oz | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package Case | SOP-14 | - | - |
| Operating Temperature | -40°C ~ 85°C | - | - |
| Mounting Type | Surface Mount | - | - |
| Features | Alarm, Leap Year | - | - |
| Function | Alarm Calendar Clock | - | - |
| Interface | I2C, 2-Wire Serial | - | - |
| Voltage Supply | 1.8 V ~ 5.5 V | - | - |
| Supplier Device Package | 14-SOP | - | - |
| Memory Size | - | - | - |
| Time Format | HH:MM:SS (24 hr) | - | - |
| Date Format | YY-MM-DD-dd | - | - |
| Voltage Supply Battery | - | - | - |
| Current Timekeeping Max | 0.8μA ~ 1.2μA @ 3V ~ 5V | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 1.8 V | - | - |
| RTC Bus Interface | I2C-Bus | - | - |