DSPIC33FJ64GS406 datasheet(45/456 Pages) MICROCHIP

45 / 456 page

 2009-2012 Microchip Technology Inc.

DS70591E-page 45

dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610

4.0

MEMORY ORGANIZATION

The

dsPIC33FJ32GS406/606/608/610

and

dsPIC33FJ64GS406/606/608/610 architecture fea-

tures separate program and data memory spaces and

buses. This architecture also allows the direct access

to program memory from the data space during code

execution.

4.1

Program Address Space

The program address memory space is 4M instruc-

tions. 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 4.6

“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 maps are shown in Figure 4-1.

FIGURE 4-1:

PROGRAM MEMORY MAPS FOR dsPIC33FJ32GS406/606/608/610 and

dsPIC33FJ64GS406/606/608/610 DEVICES

Note:

This data sheet summarizes the features

of the dsPIC33FJ32GS406/606/608/610

and

dsPIC33FJ64GS406/606/608/610

families of devices. It is not intended to be

a comprehensive reference source. To

complement the information in this data

sheet, refer to the dsPIC33F/PIC24H

Family Reference Manual, “Section 4.

Program Memory” (DS70203), which is

available from the Microchip web site

(www.microchip.com).

Reset Address

0x000000

0x0000FE

0x000002

0x000100

Device Configuration

User Program

Flash Memory

0x005800

0x0057FE

(11008 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

dsPIC33FJ32GS406/606/608/610

Reset Address

0x000000

0x0000FE

0x000002

0x000100

Device Configuration

User Program

Flash Memory

0x00AC00

0x00ABFE

(21760 instructions)

0x800000

0xF80000

Registers

0xF80017

0xF80018

0xF7FFFE

Unimplemented

(Read ‘0’s)

GOTO Instruction

0x000004

Reserved

0x7FFFFE

Reserved

0x000200

0x0001FE

0x000104

Alternate Vector Table

Reserved

Interrupt Vector Table

dsPIC33FJ64GS406/606/608/610

Reserved

0xFF0002

DEVID (2)

Reserved

0xFEFFFE

0xFF0000

0xFFFFFE

0xFF0002

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