Like other processor registers, the PC may be a bank of binary latches, each one representing one bit of the value of the PC.[8] The number of bits (the width of the PC) relates to the processor architecture. For instance, a “32-bit” CPU may use 32 bits to be able to address 232 units of memory. On some processors, the width of program counter instead depends on the addressable memory; for example, some AVR controllers have a PC which wraps around after 12 bits.[9]