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PIC24F16KA102 데이터시트(PDF) 44 Page - Microchip Technology

부품명 PIC24F16KA102
상세설명  Flash Programming Specifications
PDF  48 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC24F16KA102 데이터시트(HTML) 44 Page - Microchip Technology

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PIC24FXXKAXXX
DS39919A-page 44
Advance Information
© 2008 Microchip Technology Inc.
6.0
DEVICE ID
The Device ID region of memory can be used to
determine the mask, variant and manufacturing
information about the device. The Device ID region is
2 x 16 bits and it can be read using the READC
command. This region of memory is read-only and can
also be read when code protection is enabled.
Table 6-1 provides the Device ID for each device;
Table 6-2 provides the Device ID registers; Table 6-3
describes the bit field of each register.
TABLE 6-1:
DEVICE IDs
6.1
Checksums
6.1.1
CHECKSUM COMPUTATION
Checksums for the PIC24FXXKAXXX family are
16 bits. The checksum is calculated by summing the
following:
• Contents of the code memory locations
• Contents of the Configuration registers
Table 6-4 describes how to calculate the checksum for
each device.
All memory locations are summed, one byte at a time,
using only their native data size. More specifically,
Configuration registers are summed by adding the
lower two bytes of these locations (the upper byte is
ignored) while the code memory is summed by adding
all three bytes of the code memory.
TABLE 6-2:
PIC24FXXKAXXX DEVICE ID REGISTERS
Device ID
DEVID
PIC24F08KA101
0D08h
PIC24F16KA101
0D01h
PIC24F08KA102
0D0Ah
PIC24F16KA102
0D03h
PIC24F04KA200
0D02h
PIC24F04KA201
0D00h
Address
Name
Bit
15
14
13
12
11
10
9876
543210
FF0000h
DEVID
FAMID<7:0>
DEV<7:0>
FF0002h
DEVREV
—
REV<3:0>
TABLE 6-3:
DEVICE ID BITS DESCRIPTION
Bit Field
Register
Description
FAMID<7:0>
DEVID
Encodes the family ID of the device.
DEV<7:0>
DEVID
Encodes the individual ID of the device.
REV<3:0>
DEVREV
Encodes the revision number of the device.
TABLE 6-4:
CHECKSUM COMPUTATION
Device
Read Code Protection
Checksum Computation
Erased
Checksum
Value
Chip Checksum with
0xAAAAAA at 0x00
Location and
at Last Location
PIC24F16KAXXX
Disabled
CFGB + SUM (0:002BFE)
0xC334
0xC136
Enabled
0
0x0000
0x0000
PIC24F08KAXXX
Disabled
CFGB + SUM (0:0015FE)
0xE434
0xE236
Enabled
0
0x0000
0x0000
PIC24F04KAXXX
Disabled
CFGB + SUM (0:000AFE)
0x74B4
0x72B6
Enabled
0
0x0000
0x0000
Legend: Item
Description
SUM[a:b] =
Byte sum of locations, a to b inclusive (all 3 bytes of code memory)
CFGB
=
Configuration Block (masked),
Byte sum of (FBS & 0x000F + FGS & 0x0003 + FOSCSEL & 0x0087 + FOSC & 0x00DF +
FWDT & 0x00DF + FPOR & 0x00FB + FICD & 0x00C3 + FDS & 0x00FF)



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