PIC18LF4331T-IP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF4331T-IP

28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

Microchip Technology 

PIC18F2331/2431/4331/4431

FIGURE 23-7:

EXTERNAL BLOCK TABLE READ (EBTRn) DISALLOWED

Register Values

TBLPTR = 0002FFh

Program Memory

000000h

0001FFh

000200h

Configuration Bit Settings

WRTB, EBTRB = 11

WRT0, EBTR0 = 10

PC = 000FFEh

TBLRD *

0007FFh

000800h

000FFFh

001000h

0017FFh

001800h

001FFFh

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

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

The TABLAT register returns a value of ‘0’.

FIGURE 23-8:

EXTERNAL BLOCK TABLE READ (EBTRn) ALLOWED

Register Values

TBLPTR = 0002FFh

Program Memory

000000h

0001FFh

000200h

Configuration Bit Settings

WRTB, EBTRB = 11

WRT0, EBTR0 = 10

PC = 0007FEh

TBLRD *

0007FFh

000800h

000FFFh

001000h

0017FFh

001800h

001FFFh

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

Results: Table reads permitted within Blockn, even when EBTRBn = 0.

The TABLAT register returns the value of the data at the location TBLPTR.

 2010 Microchip Technology Inc.

DS39616D-page 281

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