PIC16F1503 datasheet(91/340 Pages) MICROCHIP

부품명	PIC16F1503

상세설명	14-Pin Flash, 8-Bit Microcontrollers

PDF	340 Pages

Scroll/Zoom	100%

제조업체	MICROCHIP [Microchip Technology]

홈페이지	http://www.microchip.com

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 2011 Microchip Technology Inc.

Preliminary

DS41607A-page 91

PIC16(L)F1503

FIGURE 10-6:

FLASH PROGRAM MEMORY WRITE FLOWCHART

Disable Interrupts

(GIE = 0)

Start

Write Operation

Select

Program or Config. Memory

(CFGS)

Select Row Address

(PMADRH:PMADRL)

Select Write Operation

(FREE = 0)

Enable Write/Erase

Operation (WREN = 1)

Unlock Sequence

(Figure x-x)

Disable

Write/Erase Operation

(WREN = 0)

Re-enable Interrupts

(GIE = 1)

End

Write Operation

No delay when writing to

Program Memory Latches

Determine number of words

to be written into Program or

Configuration Memory.

The number of words cannot

exceed the number of words

per row.

(word_cnt)

Load the value to write

(PMDATH:PMDATL)

Update the word counter

(word_cnt--)

Last word to

write ?

Increment Address

(PMADRH:PMADRL++)

Unlock Sequence

(Figure x-x)

CPU stalls while Write

operation completes

(2ms typical)

Load Write Latches Only

(LWLO = 1)

Write Latches to Flash

(LWLO = 0)

Yes

Figure 10-3

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