MA180025 Microchip Technology, MA180025 Datasheet - Page 66

• Manufacturer Part Number: MA180025
• Description: MODULE PLUG-IN PIC18F87J90 PIM
• Manufacturer: Microchip Technology
• Series: PIC®r

Specifications of MA180025

• Accessory Type: Plug-In Module (PIM) - PIC18F87J90
• Product: Microcontroller Modules
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18FxxJxx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PICDEM LCD 2 Demonstration Board (DM163030)
• For Use With: DM163030 - KIT DEV PICDEM LCD2
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F87J90 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 the handling of high-priority and
low-priority interrupts. The high-priority interrupt vector
is located at 0008h and the low-priority interrupt vector
is at 0018h. Their locations in relation to the program
memory map are shown in Figure 6-2.
FIGURE 6-2:
DS39933D-page 66
Legend:
High-Priority Interrupt Vector
Low-Priority Interrupt Vector
Flash Configuration Words
Program Memory
HARD MEMORY VECTORS
Reset Vector
(Top of Memory) represents upper boundary
of on-chip program memory space (see
Figure 6-1 for device-specific values).
Shaded area represents unimplemented
memory. Areas are not shown to scale.
On-Chip
Read ‘0’
HARD VECTOR AND
CONFIGURATION WORD
LOCATIONS FOR
PIC18F87J90 FAMILY
FAMILY DEVICES
0000h
0008h
0018h
(Top of Memory-7)
(Top of Memory)
1FFFFFh
6.1.2
Because PIC18F87J90 family devices do not have per-
sistent configuration memory, the top four words of
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 end-
ing with the upper byte of CONFIG4. For these devices,
only
CONFIG3, are used; CONFIG4 is reserved. The actual
addresses of the Flash Configuration Word for devices
in the PIC18F87J90 family are shown in Table 6-1.
Their location in the memory map is shown with the
other memory vectors in Figure 6-2.
Additional details on the device Configuration Words
are provided in Section 25.1 “Configuration Bits”.
TABLE 6-1:
PIC18F66J90
PIC18F86J90
PIC18F67J90
PIC18F87J90
Device
Configuration
FLASH CONFIGURATION WORDS
FLASH CONFIGURATION
WORD FOR PIC18F87J90
FAMILY DEVICES
Program
(Kbytes)
Memory
128
64
Words,
 2010 Microchip Technology Inc.
Configuration Word
1FFF8h to 1FFFFh
CONFIG1
FFF8h to FFFFh
Addresses
through