PIC16C62X
4.2.1
GENERAL PURPOSE REGISTER FILE
4.2
Data Memory Organization
The register file is organized as 80 x 8 in the
The data memory (Figure 4-4, Figure 4-5, Figure 4-6 and
Figure 4-7) is partitioned into two Banks which contain the
general purpose registers and the special function regis-
ters. Bank 0 is selected when the RP0 bit is cleared. Bank
1 is selected when the RP0 bit (STATUS <5>) is set. The
Special Function Registers are located in the first 32 loca-
tions of each Bank. Register locations 20-7Fh (Bank0) on
the PIC16C620A/CR620A/621A and 20-7Fh (Bank0) and
A0-BFh (Bank1) on the PIC16C622 and PIC16C622A are
general purpose registers implemented as static RAM.
Some special purpose registers are mapped in Bank 1.
PIC16C620/621, 96 in the
x
8
PIC16C620A/621A/CR620A and 128 x 8 in the
PIC16C622(A). Each is accessed either directly or indi-
rectly through the File Select Register FSR
(Section 4.4).
Addresses F0h-FFh of bank1 are implemented as common
ram and mapped back to addresses 70h-7Fh in bank0 on
the PIC16C620A/CR620A/621A/622A.
DS30235G-page 14
Preliminary
1998 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
