PIC16F1508TESSQTO datasheet(103/384 Pages) MICROCHIP

Part #	PIC16F1508TESSQTO

Description	20-Pin Flash, 8-Bit Microcontrollers with nanoWatt XLP Technology

PDF	384 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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103 / 384 page

 2011 Microchip Technology Inc.

Preliminary

DS41609A-page 103

PIC16(L)F1508/9

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

PIC16F1508TESSQTO Datasheet(PDF) 103 Page - Microchip Technology

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