Software interrupt event register (EXTI_SWIER)
| SWIER0 | Software Interrupt on line 0  |  
| SWIER1 | Software Interrupt on line 1  |  
| SWIER2 | Software Interrupt on line 2  |  
| SWIER3 | Software Interrupt on line 3  |  
| SWIER4 | Software Interrupt on line 4  |  
| SWIER5 | Software Interrupt on line 5  |  
| SWIER6 | Software Interrupt on line 6  |  
| SWIER7 | Software Interrupt on line 7  |  
| SWIER8 | Software Interrupt on line 8  |  
| SWIER9 | Software Interrupt on line 9  |  
| SWIER10 | Software Interrupt on line 10  |  
| SWIER11 | Software Interrupt on line 11  |  
| SWIER12 | Software Interrupt on line 12  |  
| SWIER13 | Software Interrupt on line 13  |  
| SWIER14 | Software Interrupt on line 14  |  
| SWIER15 | Software Interrupt on line 15  |  
| SWIER16 | Software Interrupt on line 16  |  
| SWIER17 | Software Interrupt on line 17  |  
| SWIER18 | Software Interrupt on line 18  |  
| SWIER19 | Software Interrupt on line 19  |  
| SWIER20 | Software Interrupt on line 20  |  
| SWIER21 | Software Interrupt on line 21  |  
| SWIER22 | Software Interrupt on line 22  |