XRA1200P数据手册集成电路（IC）的I/O扩展器规格书PDF

描述 Description

The XRA1200P is an 8-bit GPIO expander with an I²C/SMBus interface. The XRA1200P have the internal pull-up resistors enabled upon power-up in case it is necessary for the inputs to be in a known state.
In addition, the GPIOs on the XRA1200P can individually be controlled and configured. As outputs, the GPIOs can be outputs that are high, low or in three-state mode. The three-state mode feature is useful for applications where the power is removed from the remote devices, but they may still be connected to the GPIO expander.
As inputs, the internal pull-up resistors can be enabled or disabled and the input polarity can be inverted. The interrupt can be programmed for different behaviors. The interrupts can be programmed to generate an interrupt on the rising edge, falling edge or on both edges. The interrupt can be cleared if the input changes back to its original state or by reading the current state of the inputs.
The XRA1200P are enhanced versions of other 8-bit GPIO expanders with an I2C/SMBus interface. The XRA1200P is pin and software compatible with the CAT9554 and PCA9554. The XRA1200P are also pin compatible with the PCA9554A and TCA9554A.
The XRA1200P are available in 16-pin QFN and 16-pin TSSOP packages.
For technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.

特性 Features

·1.65V to 3.6V operating voltage·8 General Purpose I/Os (GPIOs)·5V tolerant inputs·Maximum stand-by current of 1uA at +1.8V·I²C/SMBus bus interface·I²C clock frequency up to 400kHz·Noise filter on SDA and SCL inputs·Up to 32 I²C Slave Addresses
·Individually programmable inputs·Internal pull-up resistors·Polarity inversion·Individual interrupt enable·Rising edge and/or Falling edge interrupt·Input filter
·Individually programmable outputs·Output Level Control·Output Three-State Control
·Open-drain active low interrupt output·Pin and software compatible with CAT9554 and PCA9554·3kV HBM ESD protection per JESD22-A114F·200mA latch-up performance per JESD78B

应用 Application

·Personal Digital Assistants (PDA) ·Cellular Phones/Data Devices ·Battery-Operated Devices ·Global Positioning System (GPS) ·Bluetooth