RV-3028-C8-32.768KHZ-1PPM-TA-QA

Real Time Clock Overview

The RV-3028-C8 is an ultra-small, low-profile Real-Time Clock (RTC) module featuring a hermetically sealed ceramic package with a metal lid. It integrates an XTAL and CMOS circuit, operating at 1.1 V to 5.5 V with extreme low power consumption of 70 nA @ 3 V in timekeeping mode. Factory calibrated to ±1 ppm at 25°C, it provides year, month, date, weekday, hours, minutes, seconds, and UNIX time via I2C interface up to 400 kHz. The device includes 43 bytes non-volatile user memory, 2 bytes RAM, timer, alarm, external event input with timestamp, and programmable clock outputs.

Real Time Clock Feature Summary

• Hermetically sealed ceramic SON-8 package (2.0 x 1.2 x 0.60 mm) for high stability and shock resistance.
• Extreme low power consumption: 70 nA typical @ 3 V during timekeeping.
• Time accuracy of ±1 ppm factory calibrated at 25°C with automatic frequency offset compensation.
• Integrated features include trickle charger, backup switchover, password protection, and 43 bytes EEPROM.

Real Time Clock Applications

• IoT devices
• Metering systems
• Industrial equipment
• Automotive electronics
• Health care monitors

Real Time Clock Procurement Notes

Verify the specific ordering suffixes against the manufacturer's datasheet to ensure correct temperature range (TA), qualification level (QA for AEC-Q200), and packaging quantity. Confirm that the C8 package dimensions match the target PCB footprint requirements before procurement.

Real Time Clock Selection Notes

Select this component when ultra-low profile and minimal current consumption are critical. Ensure the application supports the 1.1 V to 5.5 V supply range and utilizes an I2C bus. Verify if automotive qualification (QA suffix) is required for the specific deployment environment.

Real Time Clock Part Context

The RV-3028-C8 belongs to the RV-3028 series of RTC modules from Micro Crystal AG. It shares the same function and pinout as the C7 version but utilizes a smaller 2.0 x 1.2 x 0.60 mm SON-8 package. It is designed for space-constrained applications requiring high reliability and long-term stability.

Real Time Clock Replacement Considerations

The RV-3028-C7 offers identical functionality and pinout within a slightly larger package. Other RV-3028 variants may differ in package size or qualification levels; verify electrical parameters and mechanical dimensions before substitution.