PCA9701PW,118

The PCA9701PW,118 is an application field interface and I/O expanders. It is an integrated circuit (IC) that provides a simple solution for expanding the I/O capabilities of a microcontroller or an ASIC. It is meant for applications that require small I/O expansion and the PCA9701PW,118 is distinguished by its small package, low power consumption and wide operating temperature range.

The PCA9701PW,118 provides 8 general purpose inputs, 8 general purpose outputs, 8 interrupt inputs, and 8 open drain/open source outputs. The device includes an internal thermal shutdown circuit to protect against over-temperatures, and two selectable power-fail detect inputs available for monitoring any two of the general purpose inputs.

When all 8 general purpose inputs are configured for a low level, the device output is enabled, allowing all 8 outputs to function normally. If one or more of the general purpose inputs are at a high level, all 8 output pins will be in the high impedance state. Similarly, when all 8 GPIO outputs are in a low level state the device output will be enabled and all 8 outputs will remain in the low level state except during an over temperature shut down.

The interrupt inputs are used to detect logic state changes on the general purpose inputs and report them to the host microcontroller. The interrupt inputs can either be configured for active low or active high, allowing for both level sensitive and edge sensitive interrupt detection. The open drain/open source outputs allow for additional flexibility when connecting external circuitry and can be used to provide configurable voltage levels for input and output signals.

The PCA9701PW,118 is designed to be operated by a microcontroller that acts as a host and handles control of the I/O. The microcontroller configures the device by sending configuration commands to the device through an 8-bit interface. Configuration data can also be stored in an on-chip EEPROM, allowing the device to be reconfigured after power down.

The PCA9701PW,118 device is ideal for applications that require small I/O expansion and low power consumption. Its small package, wide operating temperature range and integrated thermal shutdown circuit make it well suited for harsh industrial environments. The device is also well suited for use in consumer applications where small size, low power and high reliability are required.

In summary, the PCA9701PW,118 is an I/O expanders that provides a simple solution for expanding the I/O capabilities of a microcontroller or ASIC. It offers 8 general purpose inputs, 8 general purpose outputs, 8 interrupt inputs and 8 open drain/open source outputs. The device is especially well suited for industrial and consumer applications where small size, low power and high reliability are required.