Maxim Integrated MAX7359ETG+ Key Management Microcontroller

The Maxim Integrated MAX7359ETG+ is a sophisticated key-switch controller designed to streamline the interface between key switches and microcontrollers. This device is particularly useful in applications requiring multiple key inputs, as it simplifies the hardware design and reduces the number of GPIOs needed on the main processor. The MAX7359ETG+ is an ideal solution for keyboards, keypads, and other human-machine interfaces across a wide range of consumer and industrial electronics.

Product Features

• Key-Switch Scanning: The MAX7359ETG+ can scan and debounce up to 64 key switches, organized in an 8x8 matrix, providing a compact and efficient solution for complex input systems.
• Interrupt Output: It features an interrupt output that notifies the host processor when a key event occurs, allowing for efficient power management by waking the processor only when necessary.
• Multiple Key Press Detection: The device is capable of detecting and reporting up to 10 simultaneous key presses, making it suitable for applications where multi-key input is common.
• Adjustable Scan Timing: Users can adjust the key switch scan timing to optimize for different switch characteristics and system requirements.
• Low Power Consumption: Designed for battery-powered applications, the MAX7359ETG+ operates with low power consumption, extending the battery life of portable devices.
• Robust Design: The device includes built-in ESD protection and operates over a wide temperature range, ensuring reliable performance in harsh environments.

Technical Specifications

• Package: 24-pin TQFN (4mm x 4mm)
• Operating Voltage: 1.6V to 3.6V
• Operating Temperature: -40°C to +85°C
• Communication Interface: I²C-compatible 2-wire serial interface

The MAX7359ETG+ from Maxim Integrated is a versatile and efficient solution for managing key-switch inputs in a variety of electronic products. Its advanced features and simple interface make it a valuable component for designers looking to enhance the user experience while maintaining a streamlined and power-efficient design.