SPRACP6 December   2019 TMS320F2800132 , TMS320F2800133 , TMS320F2800135 , TMS320F2800137 , TMS320F2800152-Q1 , TMS320F2800153-Q1 , TMS320F2800154-Q1 , TMS320F2800155 , TMS320F2800155-Q1 , TMS320F2800156-Q1 , TMS320F2800157 , TMS320F2800157-Q1 , TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1

 

  1.   How to Maximize GPIO Usage in C2000 Devices
    1.     Trademarks
    2. 1 Introduction
    3. 2 Zero Pin Boot Mode Option
      1. 2.1 Weak Pull-Up Method
      2. 2.2 Zero Pin Boot Mode Method
    4. 3 cJTAG Option
    5. 4 Zero Pin Internal Oscillator Option
    6. 5 CMPSS to Save Extra GPIO for Fast Protection
    7. 6 AIO Option
    8. 7 Using the GPDACs as General Purpose Outputs
    9. 8 Optional 1.2-V Internal DCDC
    10. 9 References

1 Introduction

With the integration trend of microcontrollers, new C2000 devices now provide more analog peripherals, which reduce the system level cost and design effort. The F28004x device incorporates on-chip analog-to-digital converters (ADCs), buffered digital-to-analog converters (DACs), programmable gain amplifiers (PGAs), and comparator subsystems (CMPSS). However, the addition of all this extra analog along with their required pins has led to the reduction in the number of GPIOs. This document explores several options on how to maximize usage of GPIOs.