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PIC24F16KL402 FAMILY

DS31037B-page 31

2011 Microchip Technology Inc.

4.0

MEMORY ORGANIZATION

Harvard

architecture

devices,

the

PIC24F

microcontrollers feature separate program and data

memory space and bussing. This architecture also

allows the direct access of program memory from the

data space during code execution.

4.1

Program Address Space

The

program

address

memory

space

the

PIC24F16KL402 family is 4M instructions. The space is

addressable by a 24-bit value derived from either the

23-bit Program Counter (PC) during program execution,

or from a table operation or data space remapping, as

described in Section 4.3 “Interfacing Program and

Data Memory Spaces”

User access to the program memory space is restricted

to the lower half of the address range (000000h to

7FFFFFh). 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.

Memory maps for the PIC24F16KL402 family of

devices are shown in Figure 4-1.

FIGURE 4-1:

PROGRAM SPACE MEMORY MAP FOR PIC24F16KL402 FAMILY DEVICES

000000h

0000FEh

000002h

000100h

F8000Eh

F80010h

FEFFFEh

FFFFFFh

000004h

000200h

0001FEh

000104h

onf

igur

ion

pace

Note:

Memory areas are not displayed to scale.

Reset Address

Device Config Registers

DEVID (2)

GOTO

Instruction

Reserved

Alternate Vector Table

Reserved

Interrupt Vector Table

PIC24F04KLXXX

FF0000h

F80000h

800000h

7FFFFFh

Reserved

Unimplemented

Read ‘0’

Reset Address

DEVID (2)

GOTO

Instruction

Alternate Vector Table

Reserved

Interrupt Vector Table

PIC24F16KLXXX

Device Config Registers

Unique ID

Unimplemented

Read ‘0’

002BFEh

7FFE00h

Data EEPROM

Flash

Program Memory

(5632 instructions)

Flash

Program Memory

(1408 instructions)

0015FEh

000AFEh

Reset Address

Device Config Registers

DEVID (2)

GOTO

Instruction

Reserved

Alternate Vector Table

Reserved

Interrupt Vector Table

PIC24F08KL2XX

Reserved

Unimplemented

Read ‘0’

Flash

Program Memory

(2816 instructions)

(512 bytes)

7FFF00h

Reset Address

Device Config Registers

DEVID (2)

GOTO

Instruction

Reserved

Alternate Vector Table

Reserved

Interrupt Vector Table

PIC24F08KL3XX

Reserved

Unimplemented

Read ‘0’

Data EEPROM

Flash

Program Memory

(2816 instructions)

(256 bytes)

Reset Address

Device Config Registers

DEVID (2)

GOTO

Instruction

Reserved

Alternate Vector Table

Reserved

Interrupt Vector Table

PIC24F08KL4XX

Reserved

Unimplemented

Read ‘0’

Data EEPROM

Flash

Program Memory

(2816 instructions)

(512 bytes)

800802h

800808h

800800h

80080Ah

Reserved

Unique ID

Reserved

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