MAXREFDES1265

描述

The MAXREFDES1265 is a reference design showcasing the MAX7360 and MAX32625PICO with a low-cost, small-size keypad interface. The MAX7360 I²C-interfaced peripheral allows microprocessors and microcontrollers to manage up to 64 key switches with additional eight LED drivers/GPIOs (general-purpose input/output) featuring constant current, PWM (pulse-width modulation) intensity control, and rotary switch control options. The MAX32625PICO is an Arm^®-core-based, low-power microcontroller. It acts as the I²C master for the MAX7360 to read and put these values on the PC terminal through the USB interface.

Hardware Specification

The MAXREFDES1265 has pinout headers for rows and columns to connect the keypad. The microcontroller reads the value through the MAX7360 with the I²C interface every time a key is pressed. The microcontroller simultaneously puts the value on the terminal of the PC.