RX8900SA
Real-time clock module by Epson
The RX8900SA 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 SA · SOP-14, standby current 700 nA typ. · 1400 nA max., accuracy ±3.4 ppm over −40 … +85 °C (DTCXO), operating range −40 … +85 °C. SOP version of the RX8900CE.
What the RX8900SA can do
Digitally temperature compensated — the stated accuracy holds across the whole temperature range, not only at +25 °C.
Alternatives in the Epson programme
If the RX8900SA 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 RX8900SA
How accurate is the RX8900SA?
±3.4 ppm over −40 … +85 °C (DTCXO). Because the device is digitally temperature compensated, that figure holds across the whole temperature range.
How much current does the RX8900SA draw in backup?
700 nA typ. · 1400 nA max.. 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 RX8900SA use?
I²C. Package: SA · SOP-14.
Where can I buy the RX8900SA 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 RX8900SA.
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.