RA8000CE
Real-time clock module by Epson
The RA8000CE 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 300 nA typ. · 1700 nA max., accuracy ±5.0 ppm (−40…+85 °C) · ±8.0 (…+105) · ±50 (…+125) — DTCXO, operating range −40 … +125 °C. AEC-Q100, +125 °C. Reset output as an ordering option — with /RST the standby current rises to 600 nA typ.
What the RA8000CE can do
Digitally temperature compensated — the stated accuracy holds across the whole temperature range, not only at +25 °C.
Detects the loss of the main supply and switches to the backup source on its own — compared with a diode-OR arrangement the MOS switch saves leakage current and voltage drop.
Events are recorded with their time inside the device, without the MCU having to wake up for it.
Issues a reset signal with an adjustable delay and replaces an external reset IC.
Reports an oscillation stop instead of quietly delivering the wrong time.
AEC-Q100. Delivery only after separate release by Epson — we will start that process for you.
Order codes
We handle the order codes for this type on request — tell us tolerance grade, packing and annual demand and we will come back with availability and lead time.
Alternatives in the Epson programme
If the RA8000CE 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 RA8000CE
How accurate is the RA8000CE?
±5.0 ppm (−40…+85 °C) · ±8.0 (…+105) · ±50 (…+125) — DTCXO. Because the device is digitally temperature compensated, that figure holds across the whole temperature range.
Is the RA8000CE AEC-Q100 qualified?
Yes. The type belongs to the automotive line. Delivery requires a separate release by Epson — we will start that process for you.
How much current does the RA8000CE draw in backup?
300 nA typ. · 1700 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 RA8000CE use?
I²C. Package: CE · 3.2 × 2.5 × 1.0 mm.
Where can I buy the RA8000CE 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 RA8000CE.
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.