RX8130CE B6

Real Time Clock Overview

The RX8130CE B6 is a real-time clock (RTC) module manufactured by Epson Timing, designed for low-power applications. It integrates a 32.768 kHz crystal unit with factory-calibrated frequency accuracy of ±5 ppm at +25°C and ±23 ppm over the operating range. The device operates on an I²C bus interface with a supply voltage range of 1.25 V to 5.5 V and consumes a typical current of 300 nA at 3 V during timekeeping. Encased in a compact 10-SMD, no-lead package measuring 3.2 x 2.5 mm, it supports battery backup switching, alarm functions, and programmable timers within an industrial temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• Integrated 32.768 kHz crystal unit with factory calibration for high precision.
• Ultra-low power consumption of 300 nA typ. at 3V during timekeeping.
• I²C bus interface supporting up to 400 kbps data rate.
• Built-in battery charging control and automatic power source switching.

Real Time Clock Applications

• Laptops and notebooks requiring low standby power.
• Wearable devices such as smartwatches.
• IoT sensor nodes needing long-term battery life.
• AI translation devices with hardware-level alarm features.

Real Time Clock Procurement Notes

Verify the specific suffix 'B6' against official Epson documentation to confirm packaging details, as distributor listings may vary between tape-and-reel, cut tape, or MouseReel formats. Ensure compatibility with system voltage requirements, noting the minimum operating voltage is 1.25 V. Cross-reference part number aliases like X1B000311000100 for accurate sourcing.

Real Time Clock Selection Notes

Select this component when space constraints require a 3.2x2.5 mm footprint instead of standard SOP8 packages. It is suitable for designs requiring integrated crystal calibration to reduce BOM complexity. Consider the digital offset register feature if operation in wide temperature ranges demands software-based frequency compensation beyond the factory-set accuracy.

Real Time Clock Part Context

The RX8130CE belongs to Epson's series of I²C-bus RTC modules. It distinguishes itself from discrete RTC chips by integrating the oscillator and calendar logic into a single ceramic package. This integration simplifies PCB layout and improves reliability compared to solutions requiring external crystals and additional support components.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult Epson's official cross-reference guides or datasheets for compatible alternatives within the RX81xx series or other manufacturers' low-power RTC offerings.