DSPIC33FJ12MC02ESS datasheet(25/284 Pages) MICROCHIP

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Preliminary

DS70265B-page 23

dsPIC33FJ12MC201/202

3.0

MEMORY ORGANIZATION

The dsPIC33FJ12MC201/202 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

dsPIC33FJ12MC201/202 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 3.6

“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 map for the dsPIC33FJ12MC201/202

devices is shown in Figure 3-1.

FIGURE 3-1:

PROGRAM MEMORY MAP FOR dsPIC33FJ12MC201/202 DEVICES

Note:

This data sheet summarizes the features

of the dsPIC33FJ12MC201/202 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”.

Please see the Microchip web site

(www.microchip.com)

for

the

latest

dsPIC33F 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

dsPIC33FJ12MC201/202

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