RV-8803-C7-32.768KHZ-3PPM-TA-QC

Real Time Clock Overview

The RV-8803-C7-32.768KHZ-3PPM-TA-QC is a surface-mount Real-Time Clock (RTC) module manufactured by Micro Crystal AG. It integrates a CMOS circuit with a 32.768 kHz tuning fork crystal resonator inside a hermetically sealed ceramic package operating under vacuum. The device provides timekeeping functions including year, month, date, weekday, hours, minutes, seconds, and 100th seconds, with automatic leap year correction from 2000 to 2099. It features an I²C-bus interface supporting 400 kHz clock speeds. Electrical specifications include a supply voltage range of 1.5 V to 5.5 V and a typical current consumption of 240 nA at 3 V during timekeeping mode.

Real Time Clock Feature Summary

• Temperature compensated time accuracy of ±3 ppm across the -40°C to +85°C operating range.
• Ultra-low power consumption of 240 nA typ. @ 3 V in timekeeping mode.
• Integrated 32.768 kHz XTAL within a hermetically sealed 3.2 x 1.5 x 0.8 mm SON-8 ceramic package.
• Supports programmable timer, alarm, external event input with timestamp, and multiple clock output frequencies (32.768 kHz, 1024 Hz, 1 Hz).

Real Time Clock Applications

• Internet of Things (IoT)
• Metering
• Industrial systems
• Automotive electronics
• Health care devices

Real Time Clock Procurement Notes

Verify that the specific suffix 'QC' denotes Commercial Grade qualification as defined in the ordering information. Confirm the package termination processing meets IPC/JEDEC J-STD-020C standards for 260°C reflow soldering. Ensure the design accounts for the metal lid connection to VSS (pin #5) for proper grounding and shielding.

Real Time Clock Selection Notes

Select this component when a hermetically sealed RTC with integrated temperature compensation is required for space-constrained designs. The ±3 ppm accuracy is suitable for applications demanding high precision without external calibration. Consider the extended range capability (+85°C to +105°C with limitations) if operation exceeds standard industrial temperatures, noting the accuracy degrades to ±7 ppm in that range.

Real Time Clock Part Context

This part belongs to the RV-8803-C7 series of Real-Time Clock Modules. The 'C7' designation indicates the 3.2 x 1.5 x 0.8 mm package size. The 'TA' suffix specifies the standard temperature range of -40°C to +85°C. The 'QC' suffix identifies the product as Commercial Grade, distinguishing it from the Automotive Grade 'QA' variant which holds AEC-Q200 qualification.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.