Characteristics and Applications of Low Power Clock Chips RX8111CE and RX4111CE

May 10,2024
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The two low-power clock chips RX4111CE and RX8111CE in Epson RTC are driving the market's demand for RTC clock chips to have high-precision, miniaturization, and low-power characteristics in the context of accelerating electronic device intensification and miniaturization. Compared to products with built-in RTC chips, Epson's real-time clock module (RTC) has independent power supply, so it can maintain the continuous operation of the timing module even when the device is powered off, which has better stability and more prominent energy-saving effects. For electronic devices with higher stability requirements, 32.768kHz active crystal oscillators and real-time clock modules (RTC clock chips) are widely used.

EPSON's RX8111CE and RX4111CE have achieved a better balance in terms of small size, low power consumption, and high stability. Epson clock chips are well-known in the industry and have a high cost performance ratio. Previously, commonly used clock chips included RX8900CE, RX8130CE, RX8010SJ, RX8804CE, etc. So what are the advantages of these two low-power clock chips that have just been launched compared to previous clock chips? What are the differences in parameter selection between RX8111CE and RX4111CE?

The RX8111CE and RX4111CE are packaged in a 3225 package with built-in frequency adjusted 32.768 kHz crystal units and automatic battery switching function. However, the new module is also equipped with timestamp function for recording and storing time information. This function can be used to record the time of system software updates, battery replacements, and system alarms. Even if the power is switched to a backup battery, timestamps are still stored, thereby improving the durability of the system. RX8111CE and RX4111CE consume a typical current of 100nA, which is about 67% less power than previous modules. This is also why they are called low-power clock chips. The significant reduction in current consumption allows for the use of smaller and cheaper secondary batteries or capacitors. In addition, Epson has expanded its interface options by providing SPI bus interfaces and IC bus interfaces. Therefore, these two low-power clock chips are ideal choices for products that require clock functionality, ranging from small electronic devices to factory automation equipment.

The low-power clock chips RX4111CE and RX8111CE are very suitable for use in factory automation equipment, office equipment, handheld terminals, security devices, and other small electronic products