SN65C3222DWE4

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Introduction

The SN65C3222DWE4 is a universal, single-chip transceiver for enhanced full-duplex (2-wire) communication systems. The SN65C3222DWE4 features an enhanced internal logic which supports programmable message lengths, supporting from 1 to 16 data bytes. Additionally, the SN65C3222DWE4 includes a dedicated programmable handshake line which allows direct connection to a general-purpose microprocessor and also provides flexibility for system expansion.

Application Field 

The SN65C3222DWE4 is ideally suited for environments where a single-chip solution is needed and system designers are challenged by tight pin-counts, limited power budget and stringent system throughput and latency requirements. The SN65C3222DWE4 is well suited for applications including a wide variety of data acquisition, serial communications and data logging projects.

The SN65C3222DWE4 can be used in a large number of applications, including: instrumentation and control systems; industrial automation; medical diagnostics; point of sale systems; consumer electronics; building automation and factory automation.

Working Principle

The SN65C3222DWE4 is a single-chip transceiver for enhanced full-duplex (2-wire) communication systems. The full-duplex operation gives the ability to implement simultaneous bidirectional communication between two devices. By utilizing a dedicated handshake line, the SN65C3222DWE4 enables the devices on either end of the transmission to control the flow of data.

The SN65C3222DWE4 features an enhanced internal logic which supports programmable message lengths and can be used to define the number of data bytes in a message, from 1 to 16. Additionally, the SN65C3222DWE4 includes an enhanced programmable handshake line which allows direct connection to a general purpose microprocessor and provides flexibility for system expansion.

The SN65C3222DWE4 also includes an auto-inverting mode which enables it to be used in systems which use inverted logic. This mode allows the transceiver to detect a logic high signal as a logic low and vice versa, allowing it to be used in a wide range of systems without the need for modified hardware or software.

The SN65C3222DWE4 includes an integrated watchdog timer and an interrupt system which can be used to signal the connected devices of an error condition, giving the system the ability to respond accordingly.

The SN65C3222DWE4 features a selectable power-saving mode which allows the transceiver to enter a low-power state after an idle period, reducing power consumption and extending system battery life.

Conclusion

The SN65C3222DWE4 is a powerful, versatile and efficient single-chip transceiver which is well suited for a wide range of applications. Its enhanced internal logic and dedicated programmable handshake line make it ideal for environments which require a small form factor and low power consumption. The SN65C3222DWE4 provides enhanced reliability by incorporating a watchdog timer and interrupt system to signal the connected devices of any errors or conditions.

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