PIC16LF1904 Datasheet, PDF (26/288 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16LF1904/6/7
3.2.2 SPECIAL FUNCTION REGISTER
The Special Function Registers 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 associated 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 Section 3.5.2
“Linear Data Memory” for more information.
3.2.4 COMMON RAM
There are 16 bytes of common RAM accessible from all
banks.
FIGURE 3-3:
BANKED MEMORY
PARTITIONING
7-bit Bank Offset
Memory Region
00h
Core Registers
(12 bytes)
0Bh
0Ch
Special Function Registers
(20 bytes maximum)
1Fh
20h
General Purpose RAM
(80 bytes maximum)
6Fh
70h
Common RAM
(16 bytes)
7Fh
3.2.5 DEVICE MEMORY MAPS
The memory maps for PIC16LF1904/6/7 are as shown
in Table 3-3.
DS41569A-page 26
Preliminary
 2011 Microchip Technology Inc.