RX4901CE XB D06

Real Time Clock Overview

The RX4901CE XB D06 is a real-time clock (RTC) module featuring a built-in 32.768 kHz crystal unit and a digitally trimmed crystal oscillator (DTCXO). It supports 3-wire or 4-wire SPI bus interfaces and operates at +105°C with low current consumption of 240 nA at 3V. The device includes an auto power switching circuit for backup power monitoring, a timestamp function storing up to 32 records, and multiple interrupt outputs including wake-up timers and alarms. The 'XB' suffix indicates a stability of ±5.0 x 10^-6 at +85°C.

Real Time Clock Feature Summary

• Built-in 32.768 kHz crystal unit and DTCXO for high frequency stability
• SPI bus interface (3-wire/4-wire) with low current consumption (240 nA typ.)
• Auto power switching between VDD and VBAT with self-monitoring interrupts
• Timestamp function supporting up to 32 records

Real Time Clock Applications

• Industrial equipment requiring high-temperature operation (+105°C)
• Data logging systems utilizing the 32-record timestamp feature
• Battery-backed real-time clock applications in consumer electronics

Real Time Clock Procurement Notes

Verify the ordering suffix against manufacturer documentation to confirm specific stability grades and packaging details. The 'XB' designation corresponds to defined stability parameters at elevated temperatures. Ensure interface compatibility with the host system's SPI controller before procurement.

Real Time Clock Selection Notes

Select this component when operating temperatures reach +105°C and low standby current is critical. The XB variant offers ±5.0 x 10^-6 stability at +85°C, suitable for applications requiring precise timekeeping without external temperature compensation. Confirm SPI pin configuration matches the target design.

Real Time Clock Part Context

This part belongs to the RX4901 series of RTC modules. The base model integrates a crystal and DTCXO, while suffixes like 'XB' define performance variations such as stability and temperature range. It serves as a compact timing solution replacing discrete oscillator and RTC combinations.

Real Time Clock Replacement Considerations

Direct substitutes must match the 32.768 kHz DTCXO architecture and SPI interface. Verify that alternative components support the same +105°C operating temperature and similar current consumption profiles to ensure system reliability.