SPI general purpose I/O expanders

General purpose I/O expanders provide GPIO expansion for most microprocessor families allowing designers to save the GPIOs on microprocessors for other important functions.

As more features and processing requirements, such as LED control, hardware control monitors, and humidity sensors in the computing space are added to applications, the limited numbers of GPIOs on microprocessors are becoming more valuable. By implementing our I/O expanders, designers can utilize the microprocessor GPIOs for important functions and use the I/O expander for other duties including system monitoring, ACPI power switches, sensors, push buttons, LEDs, fans, etc.

GPIO are ideal for adding fan and LED control to systems. They are also ideal for monitoring system functions and accepting push-button inputs.

Our new products provide General Purpose Input (GPI) expansion capabilities for SPI-bus systems.

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	PCA9701		18V tolerant SPI 16-bit GPI with interrupt
	PCA9702		18V tolerant SPI 8-bit GPI with interrupt

• GPIO Expanders
• I2C General Purpose I/O Expanders

• Bridges with GPIO