MCP2221AT-I/ST

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The MCP2221AT-I/ST is a USB to UART/I2C Serial converter that is the latest addition to the Microchip Controller products range. The device ensures a transparent communition between a host PC and peripheral ICs such as MCUs, analog-to-digital(ADC) converters, digital analog(DAC) converters or EEPROMs. This robust device makes it easy for engineers to integrate USB connectivity into their projects and eliminates the need for bulky USB cables.

The MCP2221AT-I/ST belongs to an interface-controllers class of devices, which consists of components that enable communication between microcontroller and other digital circuitry. Unlike other interface controllers, the MCP2221AT-I/ST integrates both UART and I²C communication buses in-a-single chip, making it ideal for USB peripherals. The controller works with both 3.3V and 5V logic levels and its flexible design provides power and communication options with as little as two pins.

At its core, the MCP2221AT-I/ST utilizes a standard USB 2.0 full-speed device interface that enables interfacing of the device with computers and other USB-enabled devices. The chip’s integrated single-channel UART and I²C interfaces as well as onboard logic make up the basic components of the controller. The chip also includes a POR logic that ensures that UART and I²C data transactions begin after the device has booted up.

Moreover, the controller’s I²C interface can support communication speeds up to 400Khz, which is ideal for most communication requirements. The controller also interfaces with a range of different signaling and LED indicators in order to provide visual feedback of the device status.

The device’s UART interface supports both RS232 and TTL protocols with data rates up to 50KHz. This enables the device to communicate with peripheral devices such as 8-bit and 16-bit microcontrollers, EEPROMs and other I/O devices. The device also supports secure JTAG communication, making it possible for debugging operations or the programming of microcontrollers.

The MCP2221AT-I/ST controller also integrates a versatile USB port and a versatile hardware interface with LED indicators, switch control and potentiometer control. The controller’s USB functionality is also complemented by an on-board voltage regulator which supports up to 500mA ripple peak and 400 mA continuous. This provides power and communication options with as little as two pins.

The device’s onboard logic samples, processes and dispatches UART and I²C data to the connected peripherals through the integrated USB interface. The controller also includes an internal temperature sensor which monitors the temperature of the device in order to ensure proper functioning, even when operating in extreme conditions.

Overall, the MCP2221AT-I/ST is a versatile interface-controller that simplifies the process of communicating between two digital devices. The device is perfect for engineers who are looking for an easy and reliable way to bridge the gap between the PC and their microcontroller-based projects.

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