16-bit I2C-bus and SMBus I/O port with interrupt - # of Addresses: 8 ; I2C-bus: 400 kHz; Interrupt: 0-1 ; Max Sink Current per bit: 25 mA; Max Sink Current, per package: 200 mA; Number of bits: 16 ; Operating temperature: -40~85 Cel; Operating voltage: 2.3~5.5 VDC; Source Current per bit: 10 mA; Weak Pull-Up Current Source: yes; Package: SOT137-1 (SO24); Container: Reel Pack, SMD, 13"
The PCA9555D can support I2C bus frequencies up to 400 kHz.
To use the internal oscillator, set the OSCEN bit in the Configuration Register (Register 0x01) to '1'. This will enable the internal oscillator and allow the device to operate without an external clock source.
The reset pin (RST) is an active-low input that resets the PCA9555D to its default state. When the RST pin is pulled low, the device resets and all registers are set to their default values.
The PCA9555D can be used to control LEDs by configuring the output ports as open-drain outputs and connecting the LEDs to the output pins. The device can sink up to 25 mA of current per output pin, making it suitable for driving LEDs.
The PCA9555D can sink up to 25 mA of current per output pin.
PCA9555D,118 datasheet
by NXP Semiconductors
Findchips
