The real-time clock module RX8900CE provides precise time for electronic devices and can adapt to extremely compact spaces

With the rapid development of electronic technology, more and more devices require the use of real-time clock circuits. However, in the past, most real-time clock circuits were built in a split architecture with many peripheral components, which not only had high costs but also low stability, making them somewhat inadequate under harsh working conditions. As the source of device heartbeat, the importance of real-time clocks is self-evident. EPSON recently launched a new real-time clock module - RX8900CE. It integrates in an ultra small size of 3.2mmx2.5mmx1.0mm! The C control bus, main and backup power switching, and control functions are suitable for integration into various electronic products and can operate stably and reliably.

Miniaturized design helps with high stability characteristics

As a leading enterprise in the real-time clock module industry, EPSON has innovatively integrated traditional real-time clock circuit controllers, external crystals, matching resistors and capacitors, and other module circuits into a single clock module chip through years of technological accumulation. This means that the complex and bulky circuit originally composed of an IC+crystal+peripheral resistance and capacitance can now be solved with a real-time clock module RX8900CE packaged in 3.2mmx2.5mmx1.0mm. It can avoid unpredictable situations caused by the combination of multiple components and parameters under different working conditions, greatly improving the reliability of system operation, greatly improving the stability of the overall clock circuit, and thereby improving product performance.

Low power design for longer battery life

The RX8900CE benefits from the C-MOS process, which allows it to have more transistor units per unit area, resulting in a higher energy efficiency ratio and achieving energy-saving effects. At a working voltage of 3V, its working current is only 700nA! Compared to traditional discrete circuits, the uA level current directly reduces the static current by an order of magnitude. Greatly reducing system energy efficiency, especially in low-power device applications, can greatly extend the overall battery life of the product, making it more competitive and particularly suitable for portable low-power devices such as smart wearables and low-power sensors. For ultra-low power products with sleep currents as low as ten uA, the RX8900CE reduces power consumption by about 10%!

Built in temperature compensation calibration for ultra-high accuracy

In order to cope with various complex working conditions, the RX8900CE adopts an internally integrated DCTXO with temperature compensation to achieve temperature deviation as low as+3.4ppm, equivalent to 9 seconds per month, under harsh environmental conditions of -40~+85 ℃! Of course, it also has segmented models for users to make differentiated choices based on accuracy requirements and cost measurement. Among them, the UB suffix is+5ppm at -40~+85 ℃, equivalent to 13 seconds/month, while the UC suffix can meet this range at -30~+70 ℃. With this huge advantage, the RX8900CE can adapt to many outdoor scenarios, such as photovoltaic energy storage, automotive electronics, security, etc. Without the need for users to consider additional temperature compensation operations, it provides assistance for the stable operation of the product.