CP8138BTT

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The CP8138BTT is a superior touch screen controller in the field of data acquisition. It is a 16-bit, embedded single-chip multi-function microcontroller designed specifically for touch screen control applications. The controller can connect to a wide range of external touch screen modules and be used to control a variety of user interfaces. This article will explain the CP8138BTT's application field, as well as its working principle.

1. Application Field

The CP8138BTT is widely used in the industry and it is especially suitable for applications such as industrial automation, medical and measurement, as well as automotive industry. It is capable of detecting a variety of touch screen types such as resistive, capacitive and mutual capacitive, as well as various interface types, and communicating with external devices over SPI and I2C.

The CP8138BTT utilizes the FIFO (First-In First-Out) technology to improve data transmission efficiency, and the FIFO buffer size is up to 2048 bytes. It also supports a variety of UART baud rates from 300bps to 256,000bps. And it also supports various touch panel resolutions up to 2048×2048.

The CP8138BTT provides various power-saving modes, including the deep sleep mode and power-saving timer mode. Thanks to the low power consumption and wide operating temperature range of –40 to + 85 degrees Celsius, it is suitable to be used in most fields.

2.Working Principle

The working principle of the CP8138BTT is relatively simple. It mainly consists of two parts: the touch screen controller and the touch screen controller unit. The touch screen controller contains a touch screen controller circuit and a power-saving control circuit.

The touch screen controller circuit controls the entire touch detection process. It receives the capacitance signals from the touch panel and then converts them into touch coordinates after processing. It then sends the touch data to the touch screen controller unit via the serial port. The touch screen controller unit then transmits the touch coordinates data to the host via the universal asynchronous/ synchronous serial port.

The power-saving control circuit is responsible for turning off the touch screen controller\'s power supply when it is not in use. It will automatically power on the controller when there is touch activity on the touch panel, thus minimizing power consumption and reducing overall system cost.

In addition, the CP8138BTT also supports the user\'s custom commands, which can be used to configure the processor and monitor the touch panel status. This provides users with advanced control and convenience.

Conclusion

The CP8138BTT is a superior touch screen controller in the data acquisition field that can meet the needs of various touch screen applications. By integrating this controller into the system design, users can get access to a wide range of features and functionality. Its excellent features and low power consumption make it an ideal choice for applications in various fields.

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