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AN4367 Datasheet(PDF) 10 Page - STMicroelectronics |
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AN4367 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 13 page SPC56EL60xx/SPC56xL70xx exception cases AN4367 10/13 DocID025333 Rev 1 3 SPC56EL60xx/SPC56xL70xx exception cases This chapter lists most common exception cases that application software can experience while running code on SPC56EL60xx/SPC56xL70xx device. In general all protection access exceptions and 2b ECC exception leads to the same machine check exception because of external bus error termination. In such case further analysis relies on memory area check. 3.1 Flash 2b ECC error 3.1.1 Cause of the exception Platform flash memory controller (PFLASHC) terminates bus transaction between CPU and PFLASHC controller in case the Flash memory array signals 2b ECC problem during read access. This leads to machine check exception because of bus_error termination. Figure 4. Flash 2b ECC error Table 4. SPC56EL60xx/SPC56xL70xx exception causes Exception cause Error signaling Exception Description Flash 2b ECC error External bus error Machine check Two or multiple bit error in the Flash memory leads to the machine check exception when faulty area is read, instruction fetch or data read. |
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