IO_IBER register
| PA0_IBE | PA0_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA1_IBE | PA1_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA2_IBE | PA2_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA3_IBE | PA3_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA8_IBE | PA8_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA9_IBE | PA9_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA10_IBE | PA10_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PA11_IBE | PA11_IBE: Interrupt edge selection for Port A I/Os. 0: single edge detection. 1: both edges detection | 
| PB0_IBE | PB0_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB1_IBE | PB1_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB2_IBE | PB2_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB3_IBE | PB3_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB4_IBE | PB4_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB5_IBE | PB5_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB6_IBE | PB6_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB7_IBE | PB7_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB12_IBE | PB12_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB13_IBE | PB13_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB14_IBE | PB14_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. | 
| PB15_IBE | PB15_IBE: Interrupt edge selection for port B I/Os. 0: single edge detection. 1: both edges detection. |