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| PartNumber | PCF2127AT/1,518 | PCF2127AT | PCF2127AT/1 |
| Description | IC RTC CLK/CAL I2C/SPI 20-SOIC | IC'S | |
| Manufacturer | - | - | NXP Semiconductors |
| Product Category | - | - | Clock/Timing - Real Time Clocks |
| Series | - | - | - |
| Type | - | - | Clock/Calendar |
| Packaging | - | - | Tube |
| Package Case | - | - | 20-SOIC (0.295", 7.50mm Width) |
| Operating Temperature | - | - | -40°C ~ 85°C |
| Mounting Type | - | - | Surface Mount |
| Features | - | - | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer |
| Interface | - | - | I2C, 2-Wire Serial |
| Voltage Supply | - | - | 1.8 V ~ 4.2 V |
| Supplier Device Package | - | - | 20-SO |
| Memory Size | - | - | 512B |
| Time Format | - | - | HH:MM:SS (12/24 hr) |
| Date Format | - | - | YY-MM-DD-dd |
| Voltage Supply Battery | - | - | 1.8 V ~ 4.2 V |
| Current Timekeeping Max | - | - | 1.5μA @ 3.3V |