RX8010SJ
Real-time clock module by Epson
The RX8010SJ is a real-time clock module from Epson with a built-in 32.768 kHz crystal — no separate watch crystal on the board, no load capacitance and layout risk. Interface I²C, package SJ, standby current 160 nA typ., accuracy ±23 ppm @ +25 °C, operating range −40 … +85 °C. Replaces SOP-8 RTCs from other manufacturers without a layout change — the easiest way into a second source.
What the RX8010SJ can do
The tolerance figure applies at +25 °C. Over temperature the built-in crystal follows the usual parabola.
Alternatives in the Epson programme
If the RX8010SJ is not quite the right fit — these types come closest:
All 40 families with filters for interface, package, standby current and temperature: real-time clock finder.
Frequently asked questions about the RX8010SJ
How accurate is the RX8010SJ?
±23 ppm @ +25 °C. This figure applies at +25 degrees Celsius. Over temperature the built-in crystal follows the usual parabola — if the clock has to hold when hot and cold as well, a DTCXO type is the right choice.
How much current does the RX8010SJ draw in backup?
160 nA typ.. With a 225 mAh coin cell that is enough for many years of pure timekeeping on paper; the self-discharge of the cell usually becomes the limiting factor.
Which interface does the RX8010SJ use?
I²C. Package: SJ.
Where can I buy the RX8010SJ in Europe?
Timing Devices Europe stocks the Epson RTC programme in its own warehouse in Ladenburg near Heidelberg, Germany — physically on site, not at the manufacturer. Samples, series demand and second-source assessment in one go, answered the same working day.
Enquire about the RX8010SJ.
We stock the Epson RTC programme in our own warehouse in Ladenburg near Heidelberg, Germany. Tell us tolerance grade, packing, quantity and date — answered the same working day.