PIC24FJ64GA705 Datasheet, PDF (340/412 Pages) –

PIC24FJ256GA705 FAMILY
TABLE 29-2: PIC24FJ CORE DEVICE ID REGISTERS
Address
Name
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FF0000h
FF0002h
DEVID
DEVREV
FAMID<7:0>
—
DEV<7:0>
REV<3:0>
TABLE 29-3: DEVICE ID BIT FIELD
DESCRIPTIONS
Bit Field Register
Description
FAMID<7:0>
DEV<7:0>
REV<3:0>
DEVID
DEVID
DEVREV
Encodes the family ID of
the device; FAMID = 0x75.
Encodes the individual ID
of the device.
Encodes the sequential
(numerical) revision
identifier of the device.
TABLE 29-4: PIC24FJ256GA705 FAMILY
DEVICE IDs
Device
DEVID
PIC24FJ64GA705
07
PIC24FJ128GA705
0B
PIC24FJ256GA705
0F
PIC24FJ64GA704
05
PIC24FJ128GA704
09
PIC24FJ256GA704
0D
PIC24FJ64GA702
06
PIC24FJ128GA702
0A
PIC24FJ256GA702
0E
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 0x800F00 and 0x800F08 in the device Con-
figuration space. Table 29-5 lists the addresses of the
identifier words and shows their contents.
TABLE 29-5:
UDID
UDID1
UDID2
UDID3
UDID4
UDID5
UDID ADDRESSES
Address
Description
0x800F00
0x800F02
0x800F04
0x800F06
0x800F08
UDID Word 1
UDID Word 2
UDID Word 3
UDID Word 4
UDID Word 5
DS30010118B-page 340
 2016 Microchip Technology Inc.