DSPIC33EP64GS802T-ESLASHML datasheet(34/484 Pages) MICROCHIP

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dsPIC33EPXXXGS70X/80X FAMILY

DS70005258C-page 34

 2016-2018 Microchip Technology Inc.

4.2

Unique Device Identifier (UDID)

All dsPIC33EPXXXGS70X/80X family devices are

individually encoded during final manufacturing with

a Unique Device Identifier or UDID. This feature

allows for manufacturing traceability of Microchip

Technology devices in applications where this is a

requirement. It may also be used by the application

manufacturer for any number of things that may

require unique identification, such as:

• Tracking the device

• Unique serial number

• Unique security key

The UDID comprises five 24-bit program words.

When taken together, these fields form a unique

120-bit identifier.

The UDID is stored in five read-only locations,

located between 800F00h and 800F08h in the

device configuration space. Table 4-1 lists the

addresses of the identifier words and shows their

contents.

TABLE 4-1:

UDID ADDRESSES

FIGURE 4-1:

PROGRAM MEMORY MAP FOR dsPIC33EP64GS70X/80X DEVICES

Name Address

Bits 23:16

Bits 15:8

Bits 7:0

UDID1

800F00

UDID Word 1

UDID2

800F02

UDID Word 2

UDID3

800F04

UDID Word 3

UDID4

800F06

UDID Word 4

UDID5

800F08

UDID Word 5

Reset Address

0x000000

0x000002

Write Latches

User Program

Flash Memory

0x00AF80

0x00AF7E

(22,016 instructions)

0xFA0000

0xFA0002

0xFA0004

DEVID

0xFEFFFE

0xFF0000

0xFFFFFE

0xF9FFFE

Unimplemented

(Read ‘0’s)

GOTO Instruction

0x000004

Reserved

0x000200

0x0001FE

Interrupt Vector Table

Device Configuration

0x00B000

0x00AFFE

Reserved

0xFF0002

Note:

Memory areas are not shown to scale.

0xFF0004

0x800000

0x7FFFFE

Reserved

0x800F80

0x800F7E

User OTP Memory

Reserved

Calibration Data

0x800E7A

0x800E78

0x800E48

0x800E46

0x801000

0x800FFC

0x800EFE

0x800F00

0x800F08

0x800F0A

UDID

Reserved

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