EM3028V3TP14B

Real Time Clock Overview

The EM3028V3TP14B is an extreme low power real-time clock (RTC) integrated circuit manufactured by EM Microelectronic. It provides a 32-bit UNIX time counter, calendar functions, and 43 bytes of non-volatile EEPROM user memory. The device operates on a wide voltage range from 1.2 V to 5.5 V with typical current consumption of 40 nA at 3 V using a standard 32,768 Hz tuning fork crystal. It features an I2C interface supporting up to 400 kHz, automatic backup switchover, trickle charger capabilities, and programmable clock outputs. The component is housed in a TSSOP14 plastic package.

Real Time Clock Feature Summary

• Ultra-low power consumption: typically 40 nA running on a 32,768 Hz crystal
• Wide operating voltage range: 1.2 V to 5.5 V
• Built-in 32-bit UNIX time counter and full RTC calendar functions
• 43 bytes non-volatile EEPROM for user data and configuration storage
• I2C-bus interface with 400 kHz speed capability

Real Time Clock Applications

• IoT devices
• Wearable systems
• Multi-Solar cell platforms
• Beacons and wireless sensor networks
• Industrial and environmental monitoring
• Battery operated platforms

Real Time Clock Procurement Notes

Verify the specific suffix 'V3TP14B' against official ordering information to confirm package type and compliance status. Ensure the host system supports the required I2C protocol and voltage levels within the 1.2 V to 5.5 V operating range. Confirm availability of the TSSOP14 package variant as distinct from the C7 module option.

Real Time Clock Selection Notes

Select this component when extreme low standby current is critical for battery longevity. The EM3028 is suitable for applications requiring precise timekeeping without frequent battery replacement. Consider the built-in calibration feature if high accuracy is needed across temperature variations. Verify that the available 43 bytes of EEPROM meets the non-volatile storage requirements.

Real Time Clock Part Context

The EM3028 series includes variants such as the EM3028-C7, which integrates the RTC IC with a factory-calibrated 32 kHz crystal in a hermetically sealed C7 SMD package. The standard EM3028 requires an external tuning fork crystal. The V3TP14B designation indicates the specific pinout and packaging configuration within the product line.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Evaluate other RTCs with similar I2C interfaces and ultra-low power specifications if direct replacements are necessary.

Real Time Clock FAQ

What is the typical current consumption of the EM3028?

The typical current consumption is 40 nA while running on a standard 32,768 Hz tuning fork crystal.

Does the EM3028 support automatic leap year correction?

Yes, it provides automatic leap year correction for the years 2000 to 2099.

How is frequency accuracy maintained?

The device allows calibration to ±1 ppm at 25°C using a user-programmable offset value stored in the EEPROM.