PIC16F87X Datasheet, PDF (14/218 Pages) Microchip Technology – 28/40-pin 8-Bit CMOS FLASH Microcontrollers

PIC16F87X
2.2 Data Memory Organization
The data memory is partitioned into multiple banks
which contain the General Purpose Registers and the
Special Function Registers. Bits RP1 (STATUS<6>)
and RP0 (STATUS<5>) are the bank select bits.
RP1:RP0
00
01
10
11
Bank
0
1
2
3
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 Regis-
ters are General Purpose Registers, implemented as
static RAM. All implemented banks contain Special
Function Registers. Some frequently used Special
Function Registers from one bank may be mirrored in
another bank for code reduction and quicker access.
Note: EEPROM Data Memory description can be
found in Section 4.0 of this data sheet.
2.2.1
GENERAL PURPOSE REGISTER
FILE
The register file can be accessed either directly, or indi-
rectly through the File Select Register (FSR).
DS30292C-page 12
 2001 Microchip Technology Inc.