DSPIC33FJ32GP202 datasheet(27/252 Pages) MICROCHIP

27 / 252 page

Preliminary

DS70290A-page 25

dsPIC33FJ32GP202/204 and dsPIC33FJ16GP304

3.0

MEMORY ORGANIZATION

The

dsPIC33FJ32GP202/204

and

dsPIC33FJ16GP304 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

the

dsPIC33FJ32GP202/204

and

dsPIC33FJ16GP304

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 3.6

“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 configura-

tion memory space.

The memory maps for the dsPIC33FJ32GP202/204 and

dsPIC33FJ16GP304 devices are shown in Figure 3-1.

FIGURE 3-1:

PROGRAM MEMORY FOR dsPIC33FJ32GP202/204 and dsPIC33FJ16GP304

DEVICES

Note:

This data sheet summarizes the features

the

dsPIC33FJ32GP202/204

and

dsPIC33FJ16GP304 devices. It is not

intended to be a comprehensive reference

source. To complement the information in

this data sheet, refer to the “dsPIC33F

Family Reference Manual”.

Reset Address

0x000000

0x0000FE

0x000002

0x000100

Device Configuration

User Program

Flash Memory

0x005800

0x0057FE

(11264 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

dsPIC33FJ32GP202/204

Reset Address

0x000000

0x0000FE

0x000002

0x000100

Device Configuration

User Program

Flash Memory

0x002C00

0x002BFE

(5632 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

dsPIC33FJ16GP304

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