SPRK066 October   2025 F28377D-SEP

 

  1.   1
  2.   F28377D-SEP Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Single-Event Effects (SEE)
  6. 3Device and Test Board Information
  7. 4Irradiation Facility and Setup
  8. 5Depth, Range, and LETEFF Calculation
  9. 6Test Setup and Procedures
  10. 7Destructive Single-Event Effects (DSEE)
    1. 7.1 Single-Event Latch-up (SEL) Results
  11. 8Single-Event Transients (SET)
    1. 8.1 GPIO Testing and Results
      1. 8.1.1 GPIO Test Setup
      2. 8.1.2 GPIO SET Analysis
      3. 8.1.3 GPIO SET Summary
    2. 8.2 ePWM Testing and Results
      1. 8.2.1 ePWM Testing Setup
      2. 8.2.2 ePWM SET Analysis
      3. 8.2.3 ePWM SET Summary
    3. 8.3 SRAM Testing and Results
      1. 8.3.1 SRAM Test Setup
      2. 8.3.2 SRAM SET Summary
    4. 8.4 Flash Memory Testing and Results
      1. 8.4.1 Flash Test Setup
      2. 8.4.2 Flash SET Summary
  12. 9Summary
  13.   A Total Ionizing Dose from SEE Experiments
  14.   B References

8.1.2 GPIO SET Analysis

Two types of transients were observed during testing of the GPIOs. These are referred to in subsequent sections as Type 1 and Type 2 upsets respectively.

Type 1 upsets occurred local to the GPIO, either in combination with other IOs or as a singular event. In either case these resolved either immediately or after some time duration as shown in Figure 8-5.

TMS320F38377D-SEP Type 1 Transient(SEU) For GPIO Figure 8-5 Type 1 Transient(SEU) For GPIO

Type 2 upsets were a result of impact to the system code execution, which in turn led to a trigger of the on-chip Watchdog or NMI Watchdog, meant to reset the system in case of a fault. In this case no fault handling was in place for these events, such that if the watchdog timed out or there was a system level NMI, the system was allowed to reset, and subsequently re-boot to flash. In all cases of a Type 2 upset, the system recovered and GPIO output resumed as expected.

TMS320F38377D-SEP Type 2 Transient (Recoverable SEFI) For GPIO Figure 8-6 Type 2 Transient (Recoverable SEFI) For GPIO