NCA9555B Description
NCA9555B 16-bit I2C-bus I/O port with interrupt Datasheet (EN) 1.1 Product Overview The NCA9555B is a 24-pin device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for the two-line bidirectional I2C bus applications. The device can operate with a power supply voltage (VDD) range from 1.65 V to 5.5 V. It provides a simple solution when additional I/Os are needed for ACPI power...
NCA9555B Key Features
- I2C to Parallel Port Expander
- Operating power supply voltage range of 1.65 V to 5.5 V
- Low standby current
- Open-drain active-low interrupt output
- 5.5 V tolerant, 16 I/O ports which default to input mode
- patible with most microcontrollers
- Up to 400 kHz clock frequency
- Noise filter on SCL/SDA inputs
- Polarity Inversion register
- Internal power-on reset