RX8804CE
Real-time clock module by Epson
The RX8804CE 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 CE · 3.2 × 2.5 × 1.0 mm, standby current 350 nA typ. · 1500 nA max., accuracy ±3.4 ppm over −40 … +85 °C (DTCXO), operating range −40 … +105 °C. DTCXO up to +105 °C, SOUT output port. No power switch.
What the RX8804CE can do
Digitally temperature compensated — the stated accuracy holds across the whole temperature range, not only at +25 °C.
Events are recorded with their time inside the device, without the MCU having to wake up for it.
Order codes and datasheets
Every order code has its own printable datasheet with all recorded figures.
| TDE item | Epson designation |
|---|---|
| 91-0191 | RX8804CE XA |
| 91-0192 | RX8804CE XA |
| 91-0193 | RX8804CE XA |
| 91-0194 | RX8804CE XA |
| 91-0195 | RX8804CE XA |
| 91-0196 | RX8804CE XB |
| 91-0197 | RX8804CE XB |
| 91-0198 | RX8804CE XB |
| 91-0199 | RX8804CE XB |
| 91-0200 | RX8804CE XB |
RX8804CE as a successor type
In discontinuation notice 25-012E dated 28 October 2025 Epson names the RX8804CE as the successor for the following end-of-life types. Their final shipment goes out at the end of October 2026.
Alternatives in the Epson programme
If the RX8804CE 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 RX8804CE
How accurate is the RX8804CE?
±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 RX8804CE draw in backup?
350 nA typ. · 1500 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 RX8804CE use?
I²C. Package: CE · 3.2 × 2.5 × 1.0 mm.
Where can I buy the RX8804CE 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 RX8804CE.
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.