PIC16F18323-ESLASHRFQTP datasheet(117/442 Pages) MICROCHIP

Part #	PIC16F18323-E/RFQTP

Description	Full-Featured, Low Pin Count Microcontrollers with XLP

PDF	442 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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 2015 Microchip Technology Inc.

Preliminary

DS40001799A-page 117

PIC16(L)F18313/18323

FIGURE 10-5:

PROGRAM FLASH MEMORY WRITE FLOWCHART

Start Write Operation

Determine number of

words to be written into

Program Flash Memory or

Configuration Memory.

The number of words

cannot exceed the number

of words per row

(word_cnt)

Select

Program Flash Memory or

Config. Memory

(NVMREGS)

Select Row Address

(NVMADRH:NVMADRL)

Select Write Operation

(FREE = 0)

Load Write Latches Only

(LWLO = 1)

Disable Interrupts

(GIE = 0)

Enable Write/Erase

Operation (WREN = 1)

Load the value to write

(NVMDATH:NVMDATL)

Update the word counter

(word_cnt--)

Last word to write?

Unlock Sequence

No delay when writing to

Program Flash Memory

Latches

Re-enable Interrupts

(GIE = 1)

Write Latches to Program

Flash Memory

(LWLO = 0)

Disable Interrupts

(GIE = 0)

CPU stalls while Write

operation completes

(2 ms typical)

Disable Write/Erase

Operation (WREN = 0)

End Write Operation

Increment Address

(NVMADRH:NVMADRL++)

Unlock Sequence

Re-enable Interrupts

(GIE = 1)

Yes

PIC16F18323-E/RFQTP Datasheet(PDF) 117 Page - Microchip Technology

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