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D301 Datasheet(PDF) 340 Page - Microchip Technology

No. de pieza D301
Descripción Electrónicos  16-Bit General Purpose Microcontrollers with 256-Kbyte Flash and 16-Kbyte RAM in Low Pin Count Packages
PDF  416 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

D301 Datasheet(HTML) 340 Page - Microchip Technology

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PIC24FJ256GA705 FAMILY
DS30010118D-page 340
 2016-2018 Microchip Technology Inc.
TABLE 29-2:
PIC24FJ CORE DEVICE ID REGISTERS
TABLE 29-3:
DEVICE ID BIT FIELD
DESCRIPTIONS
TABLE 29-4:
PIC24FJ256GA705 FAMILY
DEVICE IDs
29.2
Unique Device Identifier (UDID)
All PIC24FJ256GA705 family devices are individually
encoded during final manufacturing with a Unique
Device Identifier, or UDID. The UDID cannot be erased
by a bulk erase command or any other user-accessible
means. This feature allows for manufacturing
traceability of Microchip Technology devices in applica-
tions 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 0x801600 and 0x801608 in the device config-
uration space. Table 29-5 lists the addresses of the
identifier words and shows their contents.
Address
Name
Bit
15
14
13
12
11
10
9
876543210
FF0000h
DEVID
FAMID<7:0>
DEV<7:0>
FF0002h
DEVREV
—
REV<3:0>
Bit Field
Register
Description
FAMID<7:0> DEVID
Encodes the family ID of
the device; FAMID = 0x75.
DEV<7:0>
DEVID
Encodes the individual ID
of the device.
REV<3:0>
DEVREV Encodes the sequential
(numerical) revision
identifier of the device.
Device
DEVID
PIC24FJ64GA705
07
PIC24FJ128GA705
0B
PIC24FJ256GA705
0F
PIC24FJ64GA704
05
PIC24FJ128GA704
09
PIC24FJ256GA704
0D
PIC24FJ64GA702
06
PIC24FJ128GA702
0A
PIC24FJ256GA702
0E
TABLE 29-5:
UDID ADDRESSES
UDID
Address
Description
UDID1
0x801600
UDID Word 1
UDID2
0x801602
UDID Word 2
UDID3
0x801604
UDID Word 3
UDID4
0x801606
UDID Word 4
UDID5
0x801608
UDID Word 5



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