RV-8803 Real-Time Clock
Battery-backed real-time clock that keeps accurate time even when powered off. Precise to ±3ppm (less than 2 minutes per year).
Say it to PAL
“What time is it?”
The code PAL writes
const h = await p.read('qwiic-rtc', 'hours');
const mins = await p.read('qwiic-rtc', 'minutes');
p.log(`Time: ${h}:${String(mins).padStart(2, '0')}`);When to pick it
Accurate timekeeping without internet. Battery-backed, keeps time when powered off. Good for data logging and scheduled events.
Good to know
- Battery eventually dies (years) — time is lost without backup power.
- Time must be set initially — comes from factory with no valid time.
About it
The RV-8803-C7 is a high-precision real-time clock with battery backup that maintains time during power loss. Accuracy of ±3ppm means it drifts less than 2 minutes per year. Features include programmable alarms, countdown timers, and periodic interrupts. Ideal for timestamping sensor data, scheduling events, or any project that needs reliable timekeeping without internet.
Where to buy
Facts
Tested
Its driver works. We have not signed it off on a real board yet.
Current
0.24 µA
The catalog lists a typical draw of 0.24 µA for the RTC, copied from the maker’s description and not measured by Palpable.
Board size
25.4 × 25.4 mm
The RTC board measures 25.4 × 25.4 mm and stands 5.1 mm tall with its parts. It has no mounting holes. These dimensions are from the maker’s mechanical drawing.
Free to reuse
Every fact here is open data under CC BY 4.0. Copy it into your own docs or code, and credit Palpable. Download it
This record was last changed on September 20, 2026.