Datasheet

 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
Configuration Memory Space
User Memory Space
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
Configuration Memory Space
User Memory Space
Reserved
0xFF0002
DEVID (2)
Reserved
0xFEFFFE
0xFF0000
0xFFFFFE
0xFF0002