9 GPR - General Purpose Registers

AVR32LA14/20/28/32 devices provide four General Purpose Registers (GPRs). These registers can be used to store any type of information and are particularly useful for storing global variables and interrupt flags. No implicit or explicit semantics apply to the bits in the General Purpose Registers; the interpretation of the bit values is determined by software.

General Purpose Registers, which reside in the address range 0x001C–0x001F, are directly bit-accessible using the SBI, CBI, SBIS, and SBIC instructions.