DM163006 datasheet(77/320 Pages) MICROCHIP

Part #	DM163006

Description	High-Performance ROM-less Microcontrollers

PDF	320 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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77 / 320 page

 2001 Microchip Technology Inc.

Advance Information

DS39541A-page 77

PIC18C601/801

6.3

Table Write

Table Write operations store data from the data mem-

ory space into external program memory.

PIC18C601/801devices perform Table Writes one byte

at a time. Table Writes to external memory are two-cycle

instructions, unless wait states are enabled. The last

cycle writes the data to the external memory location.

16-bit interface Table Writes depend on the type of

external device that is connected and the WM<1:0>

bits in the MEMCON register (See Figure 5-2).

Example 6-2 describes how to use TBLWT.

EXAMPLE 6-2:

TABLE WRITE CODE EXAMPLE

; Write a byte to location 0020h

CLRF

TBLPTRU

; clear upper 5 bits of TBLPTR

CLRF

TBLPTRH

; clear higher 8 bits of TBLPTR

MOVLW

20h

; Load 20h into

MOVWF

TBLPTRL

; TBLPTRL

MOVLW

55h

; Load 55h into

MOVWF

TBLAT

; TBLAT

TBLWT*

; Write it

DM163006 Datasheet(PDF) 77 Page - Microchip Technology