PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 78
PIC18F25J50
Manufacturer Part Number
PIC18F25J50
Description
28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F25J50.pdf
(562 pages)
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PIC18F46J50 FAMILY
6.1.1
All PIC18 devices have a total of three hard-coded
return vectors in their program memory space. The
Reset vector address is the default value to which the
Program Counter returns on all device Resets; it is
located at 0000h.
PIC18 devices also have two interrupt vector
addresses for handling high-priority and low-priority
interrupts. The high-priority interrupt vector is located at
0008h and the low-priority interrupt vector at 0018h.
Figure 6-2
program memory map.
FIGURE 6-2:
DS39931D-page 78
Legend:
High-Priority Interrupt Vector
Low-Priority Interrupt Vector
Flash Configuration Words
Program Memory
provides their locations in relation to the
HARD MEMORY VECTORS
Reset Vector
(Top of Memory) represents upper boundary
of on-chip program memory space (see
Figure 6-1
Shaded area represents unimplemented
memory. Areas are not shown to scale.
Read as ‘0’
On-Chip
HARD VECTOR AND
CONFIGURATION WORD
LOCATIONS FOR
PIC18F46J50 FAMILY
DEVICES
for device-specific values).
0000h
0008h
0018h
(Top of Memory-7)
(Top of Memory)
1FFFFFh
persistent configuration memory, the top four words of
6.1.2
Because PIC18F46J50 family devices do not have
on-chip program memory are reserved for configuration
information. On Reset, the configuration information is
copied into the Configuration registers.
The Configuration Words are stored in their program
memory location in numerical order, starting with the
lower byte of CONFIG1 at the lowest address and
ending with the upper byte of CONFIG4.
Table 6-1
Configuration Word for devices in the PIC18F46J50
family.
map with other memory vectors.
Additional details on the device Configuration Words
are provided in
TABLE 6-1:
PIC18F24J50
PIC18F44J50
PIC18F25J50
PIC18F45J50
PIC18F26J50
PIC18F46J50
Device
Figure 6-2
provides the actual addresses of the Flash
FLASH CONFIGURATION WORDS
Section 27.1 “Configuration
displays their location in the memory
FLASH CONFIGURATION
WORD FOR PIC18F46J50
FAMILY DEVICES
Program
(Kbytes)
Memory
2011 Microchip Technology Inc.
16
32
64
FFF8h to FFFFh
3FF8h to 3FFFh
7FF8h to 7FFFh
Configuration
Addresses
Word
Bits”.
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