參數(shù)資料
型號： DM164134
廠商： Microchip Technology
文件頁數(shù)： 50/116頁
文件大?。?/td> 0K
描述： KIT DEV PIC18F4XK22
標準包裝： 1
系列： PIC® 18F
類型： MCU
適用于相關(guān)產(chǎn)品： PIC18F4XK22，PIC18F2XK22
所含物品： 板，文檔
2006 Microchip Technology Inc.
DS41159E-page 37
PIC18FXX8
4.0
MEMORY ORGANIZATION
There are three memory blocks in Enhanced MCU
devices. These memory blocks are:
Enhanced Flash Program Memory
Data Memory
EEPROM Data Memory
Data and program memory use separate busses,
which allows concurrent access of these blocks.
Additional detailed information on data EEPROM and
Flash program memory is provided in Section 5.0
Program Memory”, respectively.
4.1
Program Memory Organization
The PIC18F258/458 devices have a 21-bit program
counter that is capable of addressing a 2-Mbyte
program memory space.
The Reset vector address is at 0000h and the interrupt
vector addresses are at 0008h and 0018h.
FIGURE 4-1:
PROGRAM MEMORY MAP
AND STACK FOR
PIC18F248/448
Figure 4-1 shows the diagram for program memory
map and stack for the PIC18F248 and PIC18F448.
Figure 4-2 shows the diagram for the program memory
map and stack for the PIC18F258 and PIC18F458.
4.1.1
INTERNAL PROGRAM MEMORY
OPERATION
The PIC18F258 and the PIC18F458 have 32 Kbytes of
internal Enhanced Flash program memory. This means
that the PIC18F258 and the PIC18F458 can store up to
16K of single-word instructions. The PIC18F248 and
PIC18F448 have 16 Kbytes of Enhanced Flash
program memory. This translates into 8192 single-word
instructions, which can be stored in the program
memory. Accessing a location between the physically
implemented memory and the 2-Mbyte address will
cause a read of all ‘0’s (a NOP instruction).
FIGURE 4-2:
PROGRAM MEMORY MAP
AND STACK FOR
PIC18F258/458
PC<20:0>
Stack Level 1
Stack Level 31
Reset Vector
Low Priority Interrupt Vector
21
0000h
0018h
On-Chip
Program Memory
High Priority Interrupt Vector 0008h
U
s
er
Mem
o
ry
Sp
ac
e
1FFFFFh
4000h
3FFFh
Read ‘0’
200000h
CALL,RCALL,RETURN
RETFIE,RETLW
PC<20:0>
Stack Level 1
Stack Level 31
Reset Vector
Low Priority Interrupt Vector
CALL,RCALL,RETURN
RETFIE,RETLW
21
0000h
0018h
8000h
7FFFh
On-Chip
Program Memory
High Priority Interrupt Vector 0008h
U
s
e
rMe
m
o
ry
Sp
a
c
e
Read ‘0’
1FFFFFh
200000h
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參數(shù)描述
DM164135 制造商:Microchip Technology Inc 功能描述:KIT, ONEPIC DEMO BOARD, PLUS PICKIT 3 制造商:Microchip Technology Inc 功能描述:KIT, ONEPIC DEMO BOARD, PLUS PICKIT 3; SVHC:No SVHC (19-Dec-2012) ;RoHS Compliant: Yes 制造商:Microchip Technology Inc 功能描述:One PIC MCU Platform Board with PICkit 3
DM164135 制造商:Microchip Technology Inc 功能描述:PICKIT 3 IN-CIRCUIT DEBUGGER
DM173001 功能描述:開發(fā)板和工具包 - PIC / DSPIC PICDEM 17 PIC17CXX RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評估:chipKIT 核心:Uno32 接口類型: 工作電源電壓:
DM180021 功能描述:開發(fā)板和工具包 - PIC / DSPIC PIC18 Starter Kit RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評估:chipKIT 核心:Uno32 接口類型: 工作電源電壓:
DM1800-434MB 功能描述:射頻模塊 DM1800 Base Station 433.92 MHz RoHS:否 制造商:Linx Technologies 產(chǎn)品:Transceiver Modules 頻帶:902 MHz to 928 MHz 輸出功率:- 15.5 dBm to + 12.5 dBm 接口類型:UART 工作電源電壓:- 0.3 VDC to + 5.5 VDC 傳輸供電電流:38.1 mA 接收供電電流:22.7 mA 天線連接器類型:U.FL 最大工作溫度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
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