Datasheet Summary
Low-voltage translating 16-bit I2C-bus/SMBus I/O expander with interrupt output, reset, and configuration registers
Rev. 7.1
- 30 August 2022
Product data sheet
1 General description
The PCAL6416A is a 16-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I2C-bus interface.
NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery-powered mobile applications for interfacing to sensors, push buttons, keypad, etc. In addition to providing a flexible set of GPIOs, it simplifies interconnection of a processor running at one voltage...