Firmware versions in Keyboard and mouse reference designs

Question: Both CY4636 and CY4672 are Cypress Keyboard mouse reference designs. What is the difference between CY4636 and CY4672?

 

Answer:

CY4636 uses firmware version 1.x and CY4672 uses version 2.1. The protocol 2.1 has more enhanced features compared to 1.x. Refer to the application notes AN18059 for more information