MCP2140-I/SO

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The MCP2140-I/SO provides an interface between a microcontroller unit (MCU) and any RS-232 enabled device. As a controller within the Interface - Controllers family, the MCP2140-I/SO is designed to provide reliable data communication for applications such as industrial automation, smart buildings and communication peripherals.

The MCP2140-I/SO is a single-channel transceiver which integrates a full-duplex RS-232 driver and a power RS-232 receiver. The chip provides the necessary functions to control the serial data flow between the microcontroller unit and the RS-232 device, such as setting the serial data rate, detection of data framing errors, and the conversion of standard non-return-to-zero (NRZ) data to Manchester or differential Manchester data.

The MCP2140-I/SO also features data isolation to allow high speed data transfers. It includes optically isolated inputs and outputs to protect the MCU from surges or ground loops.

The operating voltage of the MCP2140-I/SO ranges from 5 V to 12 V, with an input voltage tolerance of up to 24 V. The device also features a built-in fail-safe circuit that ensures the output is forced to a high impedance state when the power supply is lost.

In addition to the pin-compatible MCUs built around this device, the MCP2140-I/SO also has some specific features that enable its use in a wide range of applications. These include a serial recovery circuit that can recover from data errors in the form of jitter or signal distortion, as well as an adjustable data rate of up to 500 Kbits/s that is suitable for use with high speed serial data links.

The MCP2140-I/SO can be used as an interface between an MCU and a high-speed RS-232 device such as an ASIC/FPGA or a peripheral. It is especially suitable for connecting a microcontroller unit to an embedded device or system.

The MCP2140-I/SO transmits data by exchanging small units of information, known as Manchester frames, between the MCU and the peripheral. The data frames are generated using a voltage-level shift technique, whereby the peripheral provides its own voltage level, and the MCP2140-I/SO converts it to the required level for the microcontroller unit.

In addition, the MCP2140-I/SO provides an error detection feature, which compares the incoming data from the peripheral with an internally pre-defined pattern. If any mismatch is detected, the device will raise an interrupt to the MCU and can then issue a reset signal to the peripheral in order to recover from the error. The MCP2140-I/SO also provides protection against accidental overvoltage or short-circuit events.

The MCP2140-I/SO is suitable for use in embedded applications such as industrial automation, home automation, automotive and communication control. It incorporates a variety of features, including low power consumption, a wide operating temperature range, electromechanical compatibility and isolation, as well as robust hardware and software.

For controlling higher speed serial links, the MCP2140-I/SO can be paired with an external modem or transceiver to enable data transfer speeds up to 1 Mbit/s. Additionally, the MCP2140-I/SO can be used for controlling multiple serial links simultaneously and allows for the integration of additional bridges and drivers for serial speed and protocol conversions.

In summary, the MCP2140-I/SO is a versatile and feature-rich controller within the Interface - Controllers family. It offers robust data rate control and reliable data communication for applications needing to connect an MCU to an RS-232 enabled device. This device is suitable for industrial automation, home automation, automotive and communication control applications. Additionally, it can be integrated with external modems and transceivers for higher speed data transfers, as well as for controlling multiple serial links simultaneously and for protocol conversion.

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