Epson Real-Time Clock RX8130CE for industrial, networking and consumer electronics applications
Epson, the market leader for timing devices introduces the real-time clock module RX8130CE with a built-in power switch function. Applications using real-time clocks are much more reliable and can be more accurate compared to applications using merely clock crystals with 32,768 kHz. In addition, the real-time clock keeps the time information even at lower supply voltages. Thus power can be saved when the main system is shut down for the weekend for example.
The newly developed RX8130CE is designed for the use of any power source including discharging battery as primary supply. Any power supply can be used as backup power supply including Lithium-Ion batteries since user programmable charge control is implemented. Due to the built-in power switch function no external circuits are required for the switch from primary to backup power supply in case the main supply is turned off.
The newly developed RX8130CE has a size of 3,2 x 2,5mm, a max. current consumption of 500nA in backup-mode and a frequency tolerance of 5 +/- 23ppm at a temperature of 25°C. It features an I²C interface and various functions like temperature compensated frequency output, alarm and timer function and a built-in RAM in addition to the basic clock function.