| Order | Package version | resolution | Interface | VDD (interface) (V) | watchdog timer | Programmable alarm | countdown timer | VDD (clock) (V) | Leap year tracking | IDD (nA) | temperature compensation | Tamb (Cel) | AEC-Q100 compliant |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA21125T | |||||||||||||
| PCF2123 | SOT758-1, SOT402-1 | 1 sec to year | SPI | 1.8 to 5.5 | yes | yes | yes | 1.1 to 5.5 | yes | 110 | no | -40 to +85 | no |
| PCF85063BTL | SOT1197-1 | 1 sec to year | SPI | 1.8 to 5.5 | no | yes | yes | 0.9 to 5.5 | yes | 220 | no | -40 to +85 | no |
