Datasheet

PIC16(L)F720/721
DS40001430E-page 12  2010-2013 Microchip Technology Inc.
2.2 Data Memory Organization
The data memory is partitioned into multiple banks
which contain the General Purpose Registers (GPRs)
and the Special Function Registers (SFRs). Bits RP0
and RP1 are bank select bits.
RP1
RP0
00 Bank 0 is selected
01 Bank 1 is selected
10 Bank 2 is selected
11 Bank 3 is selected
Each bank extends up to 7Fh (128 bytes). The lower
locations of each bank are reserved for the Special
Function Registers. Above the Special Function
Registers are the General Purpose Registers,
implemented as static RAM. All implemented banks
contain Special Function Registers. Some frequently
used Special Function Registers from one bank are
mirrored in another bank for code reduction and
quicker access.