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

Real Time Clock Overview

The RV-8803-C7-32.768KHZ-3PPM-TA-QA is a Surface Mount Technology (SMT) Real-Time Clock module manufactured by Micro Crystal AG. It integrates a CMOS circuit with a 32.768 kHz tuning fork crystal within a hermetically sealed ceramic package featuring a metal lid connected to VSS. The device operates on a supply voltage of 1.5 V to 5.5 V, consuming a maximum of 350 nA at 3 V in timekeeping mode. It provides year, month, date, weekday, hours, minutes, seconds, and 100th seconds via an I²C interface operating at 400 kHz. This specific variant carries the QA suffix, indicating Automotive Grade qualification according to AEC-Q200 standards.

Real Time Clock Feature Summary

• Automotive Grade Qualification: Certified to AEC-Q200 standards for automotive applications.
• High Time Accuracy: Temperature compensated accuracy of ±3 ppm from -40°C to +85°C and ±7 ppm from +85°C to +105°C.
• Low Power Consumption: Maximum current consumption of 350 nA at 3 V during timekeeping mode.
• Comprehensive Timekeeping: Outputs year, month, date, weekday, hours, minutes, seconds, and 100th seconds with automatic leap year correction (2000–2099).
• Programmable Features: Includes user-programmable offset values, timer, alarm, external event input with timestamp, and selectable 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
• Wearables and Portables

Real Time Clock Procurement Notes

Verify that the QA suffix corresponds to the required AEC-Q200 automotive qualification. 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) and the specific recommended solder pad dimensions provided in the datasheet.

Real Time Clock Selection Notes

Select this part when automotive reliability (AEC-Q200) is mandatory alongside low power operation. The TA suffix indicates a standard temperature range of -40°C to +85°C, though it supports extended ranges up to +105°C with limitations. Compare against QC variants if automotive qualification is not required. Ensure the system voltage falls within the 1.5 V to 5.5 V range and that I²C bus speed requirements do not exceed 400 kHz.

Real Time Clock Part Context

This component belongs to the RV-8803-C7 series of real-time clock modules from Micro Crystal AG. The C7 designation refers to the 3.2 x 1.5 x 0.8 mm package size. The 'TA' suffix denotes the standard temperature range (-40°C to +85°C), while 'QA' specifies the automotive grade qualification. Other variants in the series may include QC (Commercial Grade) or different temperature/accuracy specifications.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When evaluating alternatives, ensure compatibility with the 8-WCDFN package, I²C interface protocol, and AEC-Q200 automotive qualification requirements.