RX6110SA B
Real-time clock module by Epson
The RX6110SA B 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 and SPI, package SA · SOP-14, standby current 130 nA typ., accuracy ±23 ppm @ +25 °C, operating range −40 … +85 °C. I²C AND SPI in one type — the right choice when the interface is still open in the project.
What the RX6110SA B 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 RX6110SA B is not quite the right fit — these types come closest:
RX6110SA A
The same series in the SA · SOP-14 package. 170 nA typ. · −40 … +85 °C
RX8901CE
If the clock has to hold over temperature as well: DTCXO, ±3.0 ppm over −40 … +85 °C (DTCXO).
All 40 families with filters for interface, package, standby current and temperature: real-time clock finder.
Frequently asked questions about the RX6110SA B
How accurate is the RX6110SA B?
±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 RX6110SA B draw in backup?
130 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 RX6110SA B use?
I²C and SPI. Package: SA · SOP-14.
Where can I buy the RX6110SA B 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 RX6110SA B.
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.