PIC18F2685T-I/SP データシートの表示（PDF） - Microchip Technology

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PIC18F2685T-I/SP

28/40/44-Pin Enhanced Flash Microcontrollers with ECAN™ Technology, 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2682/2685/4682/4685

FIGURE 24-6:

TABLE WRITE (WRTn) DISALLOWED

Register Values

Program Memory

000000h

0007FFh

000800h

TBLPTR = 0008FFh

PC = 003FFEh

TBLWT*

003FFFh

004000h

PC = 00BFFEh

TBLWT*

007FFFh

008000h

00BFFFh

00C000h

00FFFFh

010000h

013FFFh

014000h

017FFFh

Results: All table writes disabled to Blockn whenever WRTn = 0.

Configuration Bit Settings

WRTB, EBTRB = 11

WRT0, EBTR0 = 01

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

WRT4, EBTR3 = 11

WRT5, EBTR3 = 11

FIGURE 24-7:

EXTERNAL BLOCK TABLE READ (EBTRn) DISALLOWED

Register Values

TBLPTR = 0008FFh

Program Memory

000000h

0007FFh

000800h

Configuration Bit Settings

WRTB, EBTRB = 11

WRT0, EBTR0 = 01

PC = 007FFEh

TBLRD*

003FFFh

004000h

007FFFh

008000h

00BFFFh

00C000h

00FFFFh

010000h

013FFFh

014000h

017FFFh

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

WRT4, EBTR3 = 11

WRT5, EBTR3 = 11

Results: All table reads from external blocks to Blockn are disabled whenever EBTRn = 0.

TABLAT register returns a value of ‘0’.

DS39761B-page 360

Preliminary

© 2007 Microchip Technology Inc.

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