PIC24HJ12GP201ESLASHML datasheet(19/234 Pages) MICROCHIP

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Preliminary

DS70282B-page 17

PIC24HJ12GP201/202

3.0

MEMORY ORGANIZATION

The PIC24HJ12GP201/202 architecture features

separate program and data memory spaces and

buses. This architecture also allows the direct access

of program memory from the data space during code

execution.

3.1

Program Address Space

The program address memory space of the

PIC24HJ12GP201/202 devices is 4M instructions. The

space is addressable by a 24-bit value derived either

from the 23-bit Program Counter (PC) during program

execution, or from table operation or data space

remapping as described in Section 3.4 “Interfacing

Program and Data Memory Spaces”.

User application access to the program memory space is

restricted to the lower half of the address range (0x000000

to 0x7FFFFF). The exception is the use of TBLRD/TBLWT

operations, which use TBLPAG<7> to permit access to the

Configuration bits and Device ID sections of the

configuration memory space.

The memory map for the PIC24HJ12GP201/202 device is

shown in Figure 3-1.

FIGURE 3-1:

PROGRAM MEMORY FOR PIC24HJ12GP201/202 DEVICES

Note:

This data sheet summarizes the features

of the PIC24HJ12GP201/202 devices. It is

not intended to be a comprehensive

reference source. To complement the

information in this data sheet, refer to the

“PIC24H Family Reference Manual”.

Please see the Microchip web site

(www.microchip.com)

for

the

latest

PIC24H

Family

Reference

Manual

chapters.

Reset Address

0x000000

0x0000FE

0x000002

0x000100

Device Configuration

User Program

Flash Memory

0x002000

0x001FFE

(4K instructions)

0x800000

0xF80000

Registers

0xF80017

0xF80018

DEVID (2)

0xFEFFFE

0xFF0000

0xFFFFFE

0xF7FFFE

Unimplemented

(Read ‘0’s)

GOTO Instruction

0x000004

Reserved

0x7FFFFE

Reserved

0x000200

0x0001FE

0x000104

Alternate Vector Table

Reserved

Interrupt Vector Table

PIC24HJ12GP201/202

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