SE39 datasheet(26/478 Pages) MICROCHIP

26 / 478 page

PIC16(L)F1946/1947

DS41414D-page 26

 2010-2012 Microchip Technology Inc.

3.3.1

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 appro-

priate peripheral chapter of this data sheet.

3.3.2

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).

3.3.2.1

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 3.6.2

“Linear Data Memory” for more information.

3.3.3

COMMON RAM

There are 16 bytes of common RAM accessible from all

banks.

FIGURE 3-3:

BANKED MEMORY

PARTITIONING

3.3.4

DEVICE MEMORY MAPS

The memory maps for the device family are as shown

in Table 3-3.

TABLE 3-3:

MEMORY MAP TABLES

Device

Banks

Table No.

PIC16(L)F1946/47

0-7

Table 3-4

8-15

Table 3-5, Table 3-8

16-23

Table 3-6

23-31

Table 3-7, Table 3-9

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

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