PCA9555A
Low-
voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up
Rev.
1.
1 — 6 October 2015
Product data sheet
1.
General description
The PCA9555A is a low-
voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications.
NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs, fan control, etc.
In addition to providing a flexible set of GPIOs, the wide VDD range of 1.
65 V to 5.
5 V allows the PCA9555A to interface with next-generation microprocessors and microcontrollers where suppl...