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| PartNumber | DS1251WP-C01+ | DS1251WP-C02 | DS1251WP-C01 |
| Description | Real Time Clock 4096K NV SRAM w/Phantom Clock | Real Time Clock 4096K NV SRAM w/Phantom Clock | Real Time Clock 4096K NV SRAM w/Phantom Clock |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Real Time Clock | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Package / Case | Powercap-34 | - | - |
| Supply Voltage Max | 3.63 V | - | - |
| Supply Voltage Min | 2.97 V | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Series | DS1251WP | DS1251WP | DS1251WP |
| Brand | Maxim Integrated | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | Real Time Clocks | - | - |
| Factory Pack Quantity | 40 | - | - |
| Subcategory | Clock & Timer ICs | - | - |
| Part # Aliases | 90-1251W+PC1 DS1251WP | 90-1251W+PC2 DS1251WP | 90-1251W+PC1 DS1251WP |
| Product | - | Real Time Clocks | - |
| Type | - | Phantom Time Chip | Phantom Time Chip |
| Package Case | - | - | Powercap-34 |
| Operating Temperature | - | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | - | - | - |
| Features | - | Leap Year, NVSRAM | Leap Year, NVSRAM |
| Interface | - | Parallel | Parallel |
| Voltage Supply | - | 2.97 V ~ 3.63 V | 2.97 V ~ 3.63 V |
| Supplier Device Package | - | - | - |
| Memory Size | - | 512KB | 512KB |
| Time Format | - | HH:MM:SS:hh (12/24 hr) | HH:MM:SS:hh (12/24 hr) |
| Date Format | - | YY-MM-DD-dd | YY-MM-DD-dd |
| Voltage Supply Battery | - | 3V | 3V |
| Current Timekeeping Max | - | 7mA @ 3.3V | 7mA @ 3.3V |
| Supply Voltage Max | - | 3.63 V | 3.63 V |
| Supply Voltage Min | - | 2.97 V | 2.97 V |