RV-8263-C7-32.768KHZ-20PPM-TA-QC

Real Time Clock Overview

The RV-8263-C7-32.768KHZ-20PPM-TA-QC is a hermetically sealed SMT Real-Time Clock module integrating a CMOS circuit and a 32.768 kHz tuning fork crystal within a 3.2 x 1.5 x 0.8 mm ceramic package with a metal lid. It operates on a supply voltage of 0.9 V to 5.5 V, consuming 190 nA at 3 V during timekeeping. The device provides I²C interface support up to 400 kHz, automatic leap year calculation (2000–2099), and programmable alarms for year, month, date, weekday, hours, minutes, and seconds. Time accuracy is ±20 ppm at 25°C.

Real Time Clock Feature Summary

• Hermetically sealed ceramic package with metal lid connected to VSS (pin #2).
• Ultra-low power consumption: 190 nA typical at 3 V in timekeeping mode.
• Wide operating voltage range: 0.9 V to 5.5 V.
• Time accuracy of ±20 ppm at 25°C with user-programmable offset compensation.

Real Time Clock Applications

• IoT devices
• Metering systems
• Industrial equipment
• Automotive electronics
• Healthcare monitors

Real Time Clock Procurement Notes

Verify the specific ordering suffix 'QC' indicates Commercial Grade qualification as per Micro Crystal documentation. Confirm that the TA suffix corresponds to the standard -40 to +85°C temperature range. Ensure compatibility with IPC/JEDEC J-STD-020C soldering profiles (260°C / 20-40 s) during assembly. Check for AEC-Q200 automotive qualification requirements if deploying in automotive contexts, as QC denotes commercial grade.

Real Time Clock Selection Notes

Select this module when ultra-small form factor (3.2 x 1.5 x 0.8 mm) and low standby current are critical. The ±20 ppm tolerance suits applications not requiring TCXO-level stability. Ensure the system supports I²C bus speeds up to 400 kHz. Verify that the 0.9 V minimum start-up voltage aligns with the primary power source capabilities during brown-out conditions.

Real Time Clock Part Context

This component belongs to the RV-8263 series of RTC modules from Micro Crystal AG. The C7 designation specifies the 3.2 x 1.5 x 0.8 mm ceramic package size. The TA suffix defines the industrial temperature range (-40 to +85°C), while QC indicates Commercial Grade qualification. This distinguishes it from QA (Automotive Grade AEC-Q200) variants.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet or supporting materials. Cross-referencing requires matching package dimensions, I²C register maps, and electrical characteristics against alternative RTC modules.