C-1
APPENDIX C
REGISTERS
This appendix is a reference source of information for the 8XC251Sx special function registers
(SFRs) and the register file. The SFR map in Table C-1 provides the address and reset value for
each SFR. Tables C-2 through C-6 list the SFRs by functional category. Table C-7 lists the regis-
ters that make up the register file.
The remainder of the appendix contains descriptions of the SFRs arranged in alphabetical order.
For additional information see section 3.3, “8XC251SA, SB, SP, SQ Register File,” and section
3.4, “Special Function Registers (SFRs).”
NOTE
Use the prefix “S:” with SFR addresses to distinguish them from other
addresses.