PIC16F570 datasheet(12/134 Pages) MICROCHIP

12 / 134 page

PIC16F527

DS40001652C-page 12

 2012-2014 Microchip Technology Inc.

4.0

MEMORY ORGANIZATION

The PIC16F527 memories are organized into program

memory and data memory (SRAM).The self-writable

portion of the program memory called self-writable

Flash data memory is located at addresses 400h-43Fh.

All program mode commands that work on the normal

Flash memory, work on the Flash data memory. This

includes bulk erase, row/column/cycling toggles, Load

and Read data commands (Refer to Section 5.0 “Self-

Writable Flash Data Memory Control” for more

details). For devices with more than 512 bytes of

program memory, a paging scheme is used. Program

memory pages are accessed using one STATUS

scheme is used. Data memory banks are accessed

using the File Select Register (FSR).

4.1

Program Memory Organization for

PIC16F527

The PIC16F527 device has an 11-bit Program Counter

(PC) capable of addressing a 2K x 12 program memory

space. Program memory is partitioned into user memory,

data memory and configuration memory spaces.

The user memory space is the on-chip user program

memory. As shown in Figure 4-1, it extends from 0x000

to 0x3FF and partitions into pages, including an

Interrupt vector at address 0x004 and a Reset vector at

address 0x3FF.

The data memory space is the self-writable Flash data

memory block and is located at addresses PC = 400h-

43Fh. All program mode commands that work on the

normal Flash memory, work on the Flash data memory

block. This includes bulk erase, Load and Read data

commands.

The configuration memory space extends from 0x440

to 0x7FF. Locations from 0x448 through 0x49F are

reserved. The user ID locations extend from 0x440

through 0x443. The Backup OSCCAL locations extend

from 0x444 through 0x447. The Configuration Word is

physically located at 0x7FF.

Refer

“PIC16F527

Memory

Programming

Specification” (DS41640) for more details.

FIGURE 4-1:

MEMORY MAP

005h

1FFh

Reset Vector

On-chip User

Program

Memory (Page 0)

200h

3FFh

3FEh

User ID Locations

Reserved

Configuration Word

400h

443h

444h

7FEh

7FFh

43Fh

440h

Unimplemented

On-chip User

Program

Memory (Page 1)

Self-writable

448h

49Fh

Backup OSCCAL

Locations

447h

4A0h

Flash Data Memory

Interrupt Vector

000h

004h

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