RX8111CE supports battery powered devices for data exchange across multiple computing chips

Apr 10,2024
209 VIEWS

With the development of battery technology, its capacity and quality have been significantly improved. In current battery powered devices, traditional main processor and coprocessor structures are often applied. The introduction of this computer structure greatly improves the computing power of battery powered devices, but also puts higher requirements on design. In the design of clock systems, it is often necessary to interact with the real-time clock module status information on the main processor. In this case, it is necessary to use a bus that supports multiple devices to exchange information on clock signals between the main processor and co processors.

EPSON has recently launched a real-time clock module RX8111CE with an I2C bus interface to facilitate information exchange between the main processor and co processors in battery powered devices, while also providing users with a real-time clock solution that is more in line with modern computing architectures. This module can provide real-time clock status signal sharing on the main device for products with multi processor architectures, making the parallel processing efficiency of the entire embedded product structure higher and effectively solving the clock signal status interaction problem between the main processor and co processors.

Figure 1 Principle Block Diagram of Real Time Clock Module RX8111CE

Adopting I2C bus communication, supporting multi processor information exchange

The RX8111CE supports bidirectional and half duplex serial communication on the I2C bus, enabling interconnection of multiple computing chips through dual wires, with low wiring requirements for single board design. In battery powered equipment, this type of module product can not only provide stable and reliable clock signals for the system, but also reduce the difficulty of product design for multi computing chips in applications. For mass production of products, the introduction of this bus is very helpful in improving the success rate of market-oriented application of products.

Figure 2: Comparison of current output between non output frequency state and 32.768kHz frequency state

When the frequency is not output, the power consumption is as low as 100nA, suitable for embedded applications powered by batteries

RX8111CE can turn off frequency output to reduce power consumption caused by the clock module in terms of functionality. After rigorous product testing, it was found that the power consumption can be reduced to 100nA without frequency output, and it can adapt to high and low temperature environments in a wide temperature range of -40 ℃ to 105 ℃. The product characteristics show high stability, with the highest power consumption not exceeding 1000nA. For battery powered devices, this low-power chip is a high-quality choice for product design. By cooperating with functional design, it can significantly increase the device usage time of the final product, creating a market advantage for manufacturers.

The clock module used for bus interaction has rich information and supports various time events

RX8111CE has rich configuration and interaction information, which can meet the various requirements of designers for clock signal processing. The timestamp function can be triggered through external event input pins, self monitoring, and software instructions set in the I2C bus. It supports time configuration from year to 1/256S. At the same time, RX8111CE supports programmable alarm function and has a wake-up timer function. The product function design of this module is based on the designer's long-term engineering application experience, specifically tailored for product design