General-Purpose I/O (GPIO)

All GPIO registers refer to 32 pins per port. Depending on the package type, not all pins are available, and the corresponding bits in the GPIO registers are reserved (see GPIO GPIO pins available ).

Table 1. GPIO GPIO pins available
Package GPIO Port 0
DIP8 PIO0_0 to PIO0_5
TSSOP16/XSON16 PIO0_0 to PIO0_13
TSSOP20 PIO0_0 to PIO0_17
SOP20 PIO0_0 to PIO0_17