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PIC18F258-E/LSQTP bảng dữ liệu(PDF) 280 Page - Microchip Technology

tên linh kiện PIC18F258-E/LSQTP
Giải thích chi tiết về linh kiện  28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
PDF  402 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F258-E/LSQTP bảng dữ liệu(HTML) 280 Page - Microchip Technology

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PIC18FXX8
DS41159E-page 278
© 2006 Microchip Technology Inc.
FIGURE 24-5:
EXTERNAL BLOCK TABLE READ (EBTRn) DISALLOWED
FIGURE 24-6:
EXTERNAL BLOCK TABLE READ (EBTRn) ALLOWED
000000h
0001FFh
000200h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh
WRTB, EBTRB = 11
WRT0, EBTR0 = 10
WRT1, EBTR1 = 11
WRT2, EBTR2 = 11
WRT3, EBTR3 = 11
TBLRD *
TBLPTR = 000FFF
PC = 002FFE
Results: All table reads from external blocks to Blockn are disabled whenever EBTRn = 0.
TABLAT register returns a value of ‘0’.
Register Values
Program Memory
Configuration Bit Settings
000000h
0001FFh
000200h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh
WRTB, EBTRB = 11
WRT0, EBTR0 = 10
WRT1, EBTR1 = 11
WRT2, EBTR2 = 11
WRT3, EBTR3 = 11
TBLRD *
TBLPTR = 000FFF
PC = 001FFE
Register Values
Program Memory
Configuration Bit Settings
Results: Table reads permitted within Blockn even when EBTRBn = 0.
TABLAT register returns the value of the data at the location TBLPTR.



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