RTCs with small size, long battery life, and best in class accuracy
To protect against power failure, most RTCs use external components, typically a diode, to switch from main to battery power. Beside using board space these external components the voltage drop across the diode reduces battery life. Epson's RX8130CE and RX8900CE include different versions of automatic power switch that requires no external components and maximizes operating life.
The RX8130CE is a cost optimized low power module featuring a power switch function and achieving an accuracy of 5 ± 23 ppm at 25°C. The RX8900CE uses DTCXO (digital temperature-compensated crystal oscillator) technology to achieve ± 5 or ± 3.4 ppm accuracy over the entire -40 to +85°C operating range. The RA8900CE is AEC-Q200 compliant and manufactured on a dedicated automotive assembly line.
|Operating current (typ.)||0.7mA||0.7mA||0.3mA|
|Supply voltage||1.6 to 5.5V||1.6 to 5.5V||1.1 to 5.5V|
|Accuracy||± 5/± 3.4 ppm*||± 5/± 3.4 ppm*||± 5/± 3.4 ppm**|
|Temperature||-40 to +85°C||-40 to +85°C||-40 to +85°C|
|* @ -40 to +85°C||** @ 25°C|
• Factory automation
• Sensor networks
• Surveillance camera (combined with Epson Gyro-sensors)