PCA9701; PCA9702 18 V Tolerant SPI 16-bit/8-bit GPI With

The PCA9701 PCA9702 are low power 18 V tolerant SPI General Purpose Input (GPI) Shift register designed to monitor the status of Switch inputs. It generates an interrupt when one or more of the Switch inputs change state. The input level is recognized as a HIGH when it is greater than 0.7 x VDD and as a LOW when it is less than 0.4 x VDD. The PCA9701 CAN monitor up to 16 Switch inputs and the PCA9702 CAN monitor up to 8 Switch inputs. The falling edge of the CS pin samples the input port status and clears the interrupt. When CS is LOW, the rising edge of the SCLK loads the Shift register and shifts the value out of the Shift register The serial input is sampled on the falling edge of SCLK. Each of the input ports has a 18 V breakdown ESD protection circuit. When used with a series resistor (minimum 100 kOhm), the input CAN connect to a 12 V battery and support double battery, reverse battery, and load dump conditions in automotive applications. Higher voltages CAN be tolerated on the inputs depending on the series resistor used to limit the input current. With both the high breakdown voltage and high ESD these devices are useful for both automotive and mobile applications.
By NXP Semiconductors
PCA9701 's PackagesPCA9701 's pdf datasheet

PCA9701 Pinout, Pinouts
PCA9701 pinout,Pin out
This is one package pinout of PCA9701,If you need more pinouts please download PCA9701's pdf datasheet.

PCA9701 Application circuits
PCA9701 circuits
This is one application circuit of PCA9701,If you need more circuits,please download PCA9701's pdf datasheet.

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