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

2.1 Weak Pull-Up Method

By using weak pull-ups on the boot control GPIO pins, the device will always boot to Flash boot mode. However, after boot completion, the boot control GPIO pins can be configured for application use. When utilizing this approach, the internal pull-ups should not be enabled on these GPIOs. It is recommended to use pull-up resistors in the range of 16.5 kΩ to 27.5 kΩ.

NOTE

The boot control GPIO pins should not be driven by anything else while the device is booting as that can influence the mode the device boots into.