RV-2123-C2-32.768KHZ-20PPM-TA-QA

Real Time Clock Overview

The RV-2123-C2 is a hermetically sealed ceramic Real-Time Clock (RTC) module integrating an oscillator and CMOS circuit. It features a 4-wire SPI interface with SCL up to 8 MHz, supporting supply voltages from 1.1 V to 5.5 V. Timekeeping current is typically 130 nA at 3 V. The device provides calendar functions including automatic leap year calculation through 2099, programmable alarms, timers, and clock outputs ranging from 32.768 kHz to 1 Hz. It includes user-programmable frequency offset trimming and oscillator stop detection within a SON-10 package.

Real Time Clock Feature Summary

• Hermetically sealed ceramic SON-10 package with integrated 32.768 kHz crystal
• Ultra-low power consumption: 130 nA typical in timekeeping mode at 3 V
• Wide operating voltage range: 1.1 V to 5.5 V
• SPI bus interface with maximum clock frequency of 8 MHz
• Automatic leap year calculation for years 2000 to 2099

Real Time Clock Applications

• IoT devices
• Metering systems
• Industrial equipment
• Portable electronics
• Automotive applications

Real Time Clock Procurement Notes

This component is identified as a discontinued product by the manufacturer. Verification of availability requires checking distributor channels for remaining stock or evaluating alternative replacement components. Ensure that any sourced units match the specific automotive qualification (QA suffix) if required for the application.

Real Time Clock Selection Notes

Select this model when a hermetically sealed ceramic package is necessary for environmental protection. The QA suffix indicates Automotive Grade AEC-Q200 qualification, suitable for automotive environments. Verify that the system supports the 4-wire SPI protocol and requires the specific ±20 ppm frequency tolerance at 25°C.

Real Time Clock Part Context

The RV-2123-C2 belongs to Micro Crystal's RTC module family, combining a timing circuit with a tuning fork crystal in a single surface-mount package. The part number suffixes define the temperature range (TA), qualification grade (QC/QA), and termination processing. This specific variant targets high-reliability applications requiring vacuum-sealed packaging.

Real Time Clock Replacement Considerations

As the RV-2123-C2 is discontinued, verify functional equivalents such as the RV-3029-C2 or RV-8523-C3 series. Check pin compatibility and SPI interface requirements before substitution.