PCA9535E Datasheet | onsemi

DATA SHEET .onsemi. I/O Expander for I2C Bus with Interrupt, Low-Power, 16-bit PCA9535E, PCA9535EC The PCA9535E and PCA9535EC devices provide 16 bits of General Purpose parallel Input / Output (GPIO) expansion through the I2C- bus / SMBus. The PCA9535E and PCA9535EC consist of two 8- bit Configuration (Input or Output selection); Input, Output and Polarity Inversion (active- HIGH or active- LOW operation) registers. At power on, all I/Os default to inputs. Each I/O may be configured as either input or output by writing to its corresponding I/O configuration bit. The data for each Input or Output is kept in its corresponding Input or Output register. The Polarity Inversion register may...