PIC16F722-ESLASHML datasheet(20/302 Pages) MICROCHIP

20 / 302 page

PIC16F72X/PIC16LF72X

DS41341E-page 20

FIGURE 2-3:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16F726/LF726 AND

PIC16F727/LF727

2.2

Data Memory Organization

The data memory is partitioned into multiple banks

which contain the General Purpose Registers (GPRs)

and the Special Function Registers (SFRs). Bits RP0

and RP1 are bank select bits.

RP1

RP0

→

Bank 0 is selected

→

Bank 1 is selected

→

Bank 2 is selected

→

Bank 3 is selected

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

Registers

are

the

General

Purpose

Registers,

implemented as static RAM. All implemented banks

contain Special Function Registers. Some frequently

used Special Function Registers from one bank are

mirrored in another bank for code reduction and

quicker access.

2.2.1

GENERAL PURPOSE REGISTER

FILE

The register file is organized as 128 x 8 bits in the

PIC16F722/LF722, 192 x 8 bits in the PIC16F723/LF723

and

PIC16F724/LF724,

and

368 x 8

bits

the

PIC16F726/LF726

and

PIC16F727/LF727.

Each

the File Select Register (FSR), (Refer to Section 2.5

“Indirect Addressing, INDF and FSR Registers”).

2.2.2

SPECIAL FUNCTION REGISTERS

The Special Function Registers are registers used by

the CPU and peripheral functions for controlling the

desired operation of the device (refer to Table 2-1).

These registers are static RAM.

The Special Function Registers can be classified into

two sets: core and peripheral. The Special Function

Registers associated with the “core” are described in

this section. Those related to the operation of the

peripheral features are described in the section of that

peripheral feature.

PC<12:0>

0000h

0004h

Stack Level 1

Stack Level 8

Reset Vector

Interrupt Vector

CALL, RETURN

RETFIE, RETLW

Stack Level 2

0005h

On-chip

1FFFh

Program

Memory

Page 0

Page 1

07FFh

0800h

0FFFh

1000h

Page 2

Page 3

17FFh

1800h

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