ADIMAX3100EEE+
Overview
The MAX3100EEE+ is a compact universal asynchronous receiver-transmitter (UART) designed specifically for systems using an SPI or MICROWIRE serial interface. It allows microcontrollers without a built-in UART, or those requiring an additional serial port, to communicate with RS-232 or RS-485 networks while consuming only 150uA of supply current. The device operates over a wide 2.7V to 5.5V range and includes an interrupt output to signal the host when data is available or transmission is complete.
Why Choose This Part
The MAX3100 integrates a crystal oscillator and a baud-rate generator, which reduces the total bill of materials and board space. Its ability to operate at 2.7V makes it compatible with modern low-voltage microcontrollers, while the 150uA active current is significantly lower than standard UART implementations.
Applications
Key Specifications
Getting Started
To begin development, connect the SPI interface (SCLK, DIN, DOUT, CS) to your host microcontroller and provide a 1.8432MHz or 3.6864MHz crystal across the X1 and X2 pins. Software implementation involves sending 16-bit serial words to configure baud rate, parity, and stop bits. For RS-232 or RS-485 physical layers, you must pair this controller with an external transceiver like the MAX3221 or MAX485.
