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PCA9701 - 16-bit/8-bit GPI

Description

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.

Features

  • 16 general purpose input ports (PCA9701) or 8 general purpose input ports (PCA9702).
  • 18 V tolerant input ports with 100 k external series resistor.
  • Input LOW threshold 0.4  VDD with minimum of 2 V at VDD = 4.5 V.
  • Open-drain interrupt output.
  • Interrupt enable pin (INT_EN) disables interrupt output.
  • VDD range: 2.5 V to 5.5 V.
  • IDD is very low 2.5 A maximum.
  • SPI serial interface with speeds up to 5 MHz.
  • ESD protection exceeds 8 kV HBM per JESD22-A114,.

📥 Download Datasheet

Datasheet preview – PCA9701

Datasheet Details

Part number PCA9701
Manufacturer NXP Semiconductors
File Size 369.77 KB
Description 16-bit/8-bit GPI
Datasheet download datasheet PCA9701 Datasheet
Additional preview pages of the PCA9701 datasheet.

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Full PDF Text Transcription

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PCA9701; PCA9702 18 V tolerant SPI 16-bit/8-bit GPI with INT Rev. 7 — 26 September 2014 Product data sheet 1. General description 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  VDD and as a LOW when it is less than 0.4  VDD (minimum threshold of 2 V at 5 V node). 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.
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