PCF85063A
Epson alternative: RX8130CE
You want to replace the PCF85063A from NXP — as a second source, because of availability, or because a new design is coming up. Here the type is set against the closest Epson type feature by feature, with the points that speak for and against the change.
Also listed as PCF85063TP.
Features of the PCF85063A: offset register for fine tuning, clock output from 32.768 kHz down to 1 Hz, selectable internal load capacitance of 7 pF or 12.5 pF.
PCF85063A versus RX8130CE
| PCF85063A — NXP | RX8130CE — Epson | |
|---|---|---|
| Manufacturer | NXP | Epson (Seiko Epson) |
| Status | Active series type | Active series type |
| Interface | I²C (400 kHz) | I²C |
| Crystal integrated | no — external 32.768 kHz crystal required | yes, factory calibrated |
| Standby current | on request | 300 nA typ. · 500 nA max. |
| Accuracy | depends on the external crystal used | +5 ±23 ppm at +25 °C (not compensated) |
| Temperature compensation | no | no |
| Supply | 0.9 – 5.5 V | 1.25–5.5 V |
| Max. temperature | +85 °C | −40 … +85 °C |
| Package | SO8 · TSSOP8 · DFN2626-10 (TP: HXSON8) | CE · 3.2 × 2.5 × 1.0 mm |
What speaks for and against the change
We sell Epson — and we still say where the competitor is better. You would notice it at the first datasheet comparison anyway.
Honestly
- Very small package for the device on its own
- Selectable internal load capacitance saves two capacitors
The difference
- The PCF85063A is also an RTC IC WITHOUT a crystal — the 32.768 kHz crystal comes on top, together with its matching and layout risk
- The RX8130CE carries the calibrated crystal inside the package and adds a reset output with delay, a V_IO pin and charge control with full-charge detection
- Do the comparison across the whole assembly: device plus crystal plus two capacitors plus placement plus test effort against a single module
Frequently asked questions
What is the Epson alternative to the PCF85063A?
The closest match is the RX8130CE, with the RX8111CE as a second option. It is not a drop-in replacement: package, pinout and register map differ, so layout and firmware have to be adapted. What you get in return is set out in the comparison on this page.
Does the PCF85063A need an external crystal?
Yes. The PCF85063A is an RTC IC without a built-in crystal — you need an additional 32.768 kHz crystal and have to match its load capacitance to the device. The Epson modules carry the calibrated crystal inside the package: one component instead of three, no load capacitance matching, no layout risk in the oscillator loop.
Who supplies an alternative to the PCF85063A in Europe?
Timing Devices Europe in Ladenburg near Heidelberg, Germany stocks the complete Epson RTC programme in its own warehouse — physically on site, not at the manufacturer. Samples, comparison and series demand in one go, answered the same working day.
Samples and a comparison for the PCF85063A.
Tell us which version you use today, together with quantity and date. We will put together the Epson equivalent with its datasheet and the migration effort — from our own warehouse in Ladenburg near Heidelberg, Germany.