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PIC18F4520E/MLQTP bảng dữ liệu(PDF) 267 Page - Microchip Technology

tên linh kiện PIC18F4520E/MLQTP
Giải thích chi tiết về linh kiện  28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PDF  390 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F4520E/MLQTP bảng dữ liệu(HTML) 267 Page - Microchip Technology

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 2004 Microchip Technology Inc.
Preliminary
DS39631A-page 265
PIC18F2420/2520/4420/4520
FIGURE 23-7:
EXTERNAL BLOCK TABLE READ (EBTRn) DISALLOWED
FIGURE 23-8:
EXTERNAL BLOCK TABLE READ (EBTRn) ALLOWED
WRTB, EBTRB = 11
WRT0, EBTR0 = 10
WRT1, EBTR1 = 11
WRT2, EBTR2 = 11
WRT3, EBTR3 = 11
TBLRD*
TBLPTR = 0008FFh
PC = 003FFEh
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
0007FFh
000800h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh
WRTB, EBTRB = 11
WRT0, EBTR0 = 10
WRT1, EBTR1 = 11
WRT2, EBTR2 = 11
WRT3, EBTR3 = 11
TBLRD*
TBLPTR = 0008FFh
PC = 001FFEh
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.
000000h
0007FFh
000800h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh



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