| PartNumber | PCF85263AT/AJ | PCF85263ATT/AJ | PCF85263ATL/AX |
| Description | Real Time Clock Low Power Real time clocks | Real Time Clock Low Power Real time clocks | Real Time Clock Low Power Real time clocks |
| Manufacturer | NXP | NXP | NXP |
| Product Category | Real Time Clock | Real Time Clock | Real Time Clock |
| RoHS | Y | Y | Y |
| Packaging | Reel | Reel | Reel |
| Series | PCF85263A | PCF85263A | PCF85263A |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Product Type | Real Time Clock | Real Time Clock | Real Time Clock |
| Factory Pack Quantity | 2500 | 2500 | 4000 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Part # Aliases | 935302207118 | 935304459118 | 935302602115 |
| Unit Weight | 0.002628 oz | 0.000780 oz | 0.000594 oz |
| Mounting Style | - | SMD/SMT | SMD/SMT |
| Package / Case | - | TSSOP-8 | DFN-EP-10 |
| RTC Bus Interface | - | Serial, I2C | Serial, 2-Wire, I2C |
| Date Format | - | Binary | YY-MM-DD-dd |
| Time Format | - | Binary | HH:MM:SS:hh (12 hr, 24 hr) |
| Battery Backup Switching | - | Backup Switching | Backup Switching |
| Supply Voltage Max | - | 5.5 V | 5.5 V |
| Supply Voltage Min | - | 900 mV | 900 mV |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Function | - | Alarm, Calendar, Clock | Alarm, Calendar, Clock |
| Product | - | Real Time Clocks | Real Time Clocks |
| Type | - | CMOS Real-Time Clock and Calendar | CMOS Real-Time Clock and Calendar |