Microchip Technology AC244044 Data Sheet

Page of 448
 2010-2012 Microchip Technology Inc.
DS41440C-page 25
PIC16(L)F1825/1829
3.2.2
SPECIAL FUNCTION REGISTER
The Special Function Registers (FSR) are registers
used by the application to control the desired operation
of peripheral functions in the device. The Special
Function Registers occupy the 20 bytes after the core
registers of every data memory bank (addresses
x0Ch/x8Ch through x1Fh/x9Fh). The registers associ-
ated with the operation of the peripherals are described
in the appropriate peripheral chapter of this data sheet.
3.2.3
GENERAL PURPOSE RAM
There are up to 80 bytes of GPR in each data memory
bank. The Special Function Registers occupy the 20
bytes after the core registers of every data memory
bank (addresses x0Ch/x8Ch through x1Fh/x9Fh).
3.2.3.1
Linear Access to GPR
The general purpose RAM can be accessed in a
non-banked method via the FSRs. This can simplify
access to large memory structures. See 
 for more information.
3.2.4
COMMON RAM
There are 16 bytes of common RAM accessible from all
banks.
FIGURE 3-2:
BANKED MEMORY 
PARTITIONING 
3.2.5
DEVICE MEMORY MAPS
The memory maps for the device family are as shown
in 
TABLE 3-2:
MEMORY MAP TABLES
Device
Banks
Table No.
PIC16(L)F1825
PIC16(L)F1829
0-7
8-15
16-23
24-31
31
0Bh
0Ch
1Fh
20h
6Fh
70h
7Fh
00h
Common RAM
(16 bytes)
General Purpose RAM
(80 bytes maximum)
Core Registers
(12 bytes)
Special Function Registers
(20 bytes maximum)
Memory Region
7-bit Bank Offset