According to the datasheet, each I/O pin can source or sink up to 25mA. However, it's recommended to limit the current to 10mA per pin to ensure reliable operation and prevent overheating.
The PCA9535PWRG4 is an I2C-bus expander, and it's configured by writing to the configuration register (address 0x03) to set the I/O direction, polarity, and output type. Refer to the datasheet for the register map and configuration details.
The internal pull-up resistors on the I/O pins are used to prevent floating inputs and ensure a default high state when the pins are configured as inputs. They can be disabled by writing to the pull-up resistor control register (address 0x06).
Yes, the PCA9535PWRG4 can be used as a level translator between 3.3V and 5V systems. The device is designed to operate from 2.3V to 5.5V, and it can translate signals between these voltage levels. However, ensure that the input and output voltage levels are within the recommended operating range.
The PCA9535PWRG4 can be reset to its default state by asserting the RESET pin low for at least 1ms. This will reset the device to its power-on default state, clearing all registers and setting the I/O pins to inputs with internal pull-up resistors enabled.
PCA9535PWRG4 datasheet
by Texas Instruments
