SCPA070 june   2023 TCAL6408 , TCAL6416 , TCAL9538 , TCAL9539 , TCAL9539-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Programmable Output Drive Strength
  6. 3 Programmable Pull-Up or Pull-Down Resistors
  7. 4 Latchable Inputs
  8. 5 Maskable Interrupt
  9. 6 Interrupt Status Register
  10. 7 Programmable Open-Drain and Push-Pull Outputs
  11. 8 Benefits of Using TCAL I/O Expanders Versus TCA I/O Expanders
  12. 9 Summary
  13. 10References

1 Introduction

The TCAL family of I2C I/O expanders offers new and improved functionality on the p-port pins. The Agile I/O’s can be adjusted for drive strength, power consumption, EMI, and software related flags. Here are the six features an Agile I/O can offer on a TCAL I/O expander.

  • Programmable output drive strength
  • Programmable pull-up and pull-down resistors
  • Latchable inputs
  • Maskable interrupts
  • Interrupt status register
  • Programmable open drain or push-pull outputs

For the examples provided in this application note, the TCAL6416 is the device in use.