EM3028
Our revolutionary ultra-low-power precision Real-Time-Clock in an 14pin TSSOP package. Battery backup and user EEPROM. No excuses for time loss.
Ultra-Low Power RTC
The EM3028 is an extremely low-power high precision RTC with battery backup and additional user EEPROM memory. Its unique feature set makes it the perfect choice for system power management without ever loosing the time.
With an unmatched 45nA current consumption in precision timekeeping mode the EM3028 extends the battery life time and the usage of cheap ceramic capacitors while in power backup mode.
Time accuracy is crucial in synchronization and for precision wake-up and sleep intervals. The 1ppm calibration possibility guarantees a 30sec precision over 1 year.
The full RTC configuration is available from power-up. No CPU intervention needed. Critical application parameters can be saved directly on the RTC EEPROM and are never lost. Reduce BOM cost as no extra data memory IC is needed.
Features
- Extreme low power consumption: 40 nA @ 3 V.
- Wide operating voltage range: 1.2 V to 5.5 V.
- Built-in tuning Fork crystal at 32’768 Hz
- Time accuracy: possible to calibrate to ±1 ppm @ 25°C
- Non-volatile configuration settings with user programmable offset value.
- Configuration stored in EEPROM and mirrored in RAM
- Backup Switch and Trickle Charger function.
- Provides year, month, date, weekday, hours, minutes and seconds.
- Automatic leap year correction; 2000 to 2099.
- 32 bit UNIX time counter.
- Timer, alarm and external event functions with time stamp.
- PeriodicTime IRQ
- Clock output: 32.768 kHz, 8192 Hz, 1024 Hz, 64 Hz, 32 Hz, 1 Hz.
- 43 bytes non-volatile user memory, 2 bytes user RAM.
- I2C-bus interface: 400 kHz.
Technical Resources
Download product data sheets, fact sheets, and development resources or get expert support to accelerate your integration.
Application Areas
- IoT
- Wearables
- Wireless sensor networks
- Environmental monitoring
- Battery operated platforms
Additional Downloads
Development Board
Gui (Graphical user interface)
Innovation proposal
