PI4IOE5V6416A Datasheet, PDF
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- Description The PI4IOE5V6416A is a 16-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I2C-bus interface. It provides a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery0powered mobile applications for interfacing to sensors, push buttons, keypad, etc. It can operate from 1.65V to 5.5V on the GPIO-port side and 1.65V to 5.5V on the SDA/SCL side. This allows the PI4IOE5V6416A to interface with next generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. The bidirectional voltage-level translation in the PI4IOE5V6416A is provided through VDD(I2C_bus. VDD(I2C_bus) should be connected to the VDD of the external SCL/SDA lines. The voltage level on the GPIO-port of the PI4IOE5V6416A is determined by VDD(P). At power on, the I/Os are configured as inputs; however, the system master can enable the I/Os as either inputs or outputs by writing to the I/O direction bits. The data for each input or output is kept in the corresponding Input or Output register. All registers can be read by the system master. PI4IOE5V6416A has open-drain interrupt (INT) output pin that goes LOW when in the input state of a GPIO-port changes from the input-state default register value. The device also has an interrupt masking feature by which the user can mask the interrupt from an individual GPIO-port.
- Part No. PI4IOE5V6416A
- Manufacturer 达尔-Diodes
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