The CY8C9520A-24PVXI is an I/O expander integrated circuit with EEPROM, POR, PWM, and WDT features. It has a total of 20 I/Os and operates with an open-drain output type. The interface is I2C, and it has a current output source/sink of 10mA and 25mA. It operates @ a voltage supply range of 3V to 5.25V and is surface mountable with a 28-SSOP package. The operating temperature range is -40°C to 85°C. It has a clock frequency of 100kHz. Infineon Technologies is the manufacturer of this product, and it is currently active.