41594B datasheet(101/372 Pages) MICROCHIP

部品番号	41594B

部品情報	8-Bit Flash Microcontroller with nanoWatt XLP Technology

PDF	372 Pages

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メーカー	MICROCHIP [Microchip Technology]

ホームページ	http://www.microchip.com

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 2011-2012 Microchip Technology Inc.

Preliminary

DS41594B-page 101

PIC12LF1840T48A

After the “BSF EECON1,WR” instruction, the processor

requires two cycles to set up the write operation. The

user must place two NOP instructions after the WR bit is

set. The processor will halt internal operations for the

typical 2 ms, only during the cycle in which the write

takes place (i.e., the last word of the block write). This

is not Sleep mode as the clocks and peripherals will

continue to run. The processor does not stall when

LWLO = 1, loading the write latches. After the write

cycle, the processor will resume operation with the third

instruction after the EECON1 write instruction.

FIGURE 11-2:

BLOCK WRITES TO FLASH PROGRAM MEMORY WITH 32 WRITE LATCHES

Program Memory

Buffer Register

EEADRL<4:0> = 00000

Buffer Register

EEADRL<4:0> = 00001

Buffer Register

EEADRL<4:0> = 00010

Buffer Register

EEADRL<4:0> = 11111

EEDATA

EEDATH

First word of block

to be written

Last word of block

to be written

41594B データシート(PDF) 101 Page - Microchip Technology