PB5SEL=GPIO, PB3SEL=GPIO, PB2SEL=GPIO, PB1SEL=GPIO, PB0SEL=GPIO, PB4SEL=GPIO
Function Select
| PB0SEL | Port Bank n.0 Function Select. 0 (GPIO): Pin configured for GPIO. 1 (PMLS): Pin configured for Port Mapped Level Shift. 2 (EPCA0): Pin configured for EPCA0 output. 3 (RESERVED): Reserved. | 
| PB1SEL | Port Bank n.1 Function Select. 0 (GPIO): Pin configured for GPIO. 1 (PMLS): Pin configured for Port Mapped Level Shift. 2 (EPCA0): Pin configured for EPCA0 output. 3 (RESERVED): Reserved. | 
| PB2SEL | Port Bank n.2 Function Select. 0 (GPIO): Pin configured for GPIO. 1 (PMLS): Pin configured for Port Mapped Level Shift. 2 (EPCA0): Pin configured for EPCA0 output. 3 (UART1): Pin configured for UART1 TX. | 
| PB3SEL | Port Bank n.3 Function Select. 0 (GPIO): Pin configured for GPIO. 1 (PMLS): Pin configured for Port Mapped Level Shift. 2 (EPCA0): Pin configured for EPCA0 output. 3 (UART1): Pin configured for UART1 RX. | 
| PB4SEL | Port Bank n.4 Function Select. 0 (GPIO): Pin configured for GPIO. 1 (PMLS): Pin configured for Port Mapped Level Shift. 2 (EPCA0): Pin configured for EPCA0 output. 3 (UART1): Pin configured for UART1 RTS. | 
| PB5SEL | Port Bank n.5 Function Select. 0 (GPIO): Pin configured for GPIO. 1 (PMLS): Pin configured for Port Mapped Level Shift. 2 (EPCA0): Pin configured for EPCA0 output. 3 (UART1): Pin configured for UART1 CTS. 4 (LPTIMER0): Pin configured for LPTIMER0 toggle output. |