PIC18F4580-ESLASHML datasheet(365/490 Pages) MICROCHIP

Part #	PIC18F4580-E/ML

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

PDF	490 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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365 / 490 page

DS39637D-page 365

PIC18F2480/2580/4480/4580

FIGURE 25-7:

EXTERNAL BLOCK TABLE READ (EBTRn) DISALLOWED

FIGURE 25-8:

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 = 007FFEh

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

TABLAT register returns a value of ‘0’.

Program Memory

Configuration Bit Settings

000000h

0007FFh

000800h

003FFFh

004000h

007FFFh

008000h

00BFFFh

00C000h

00FFFFh

WRTB, EBTRB = 11

WRT0, EBTR0 = 10

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

TBLRD*

TBLPTR = 0008FFh

PC = 003FFEh

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

003FFFh

004000h

007FFFh

008000h

00BFFFh

00C000h

00FFFFh

PIC18F4580-E/ML Datasheet(PDF) 365 Page - Microchip Technology

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