PIC18F45K80T-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F45K80T-I/SO

28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN™ and nanoWatt XLP Technology

Microchip Technology 

PIC18F66K80 FAMILY

FIGURE 28-8:

EXTERNAL BLOCK TABLE READ (EBTRx) DISALLOWED

Register Values

TBLPTR = 0008FFh

Program Memory

000000h

0007FFh

000800h

Configuration Bit Settings

WRTB, EBTRB = 11

WRT0, EBTR0 = 10

PC = 007FFEh

TBLRD*

003FFFh

004000h

007FFFh

008000h

00BFFFh

00C000h

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

00FFFFh

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

The TABLAT register returns a value of ‘0’.

FIGURE 28-9:

EXTERNAL BLOCK TABLE READ (EBTRx) ALLOWED

Register Values

TBLPTR = 0008FFh

PC = 003FFEh

Program Memory

000000h

0007FFh

000800h

TBLRD*

003FFFh

004000h

007FFFh

008000h

00BFFFh

00C000h

00FFFFh

Configuration Bit Settings

WRTB, EBTRB = 11

WRT0, EBTR0 = 10

WRT1, EBTR1 = 11

WRT2, EBTR2 = 11

WRT3, EBTR3 = 11

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

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

 2010-2012 Microchip Technology Inc.

DS39977F-page 481

Share Link: