PIC16LF1459T-E/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LF1459T-E/SL

14/20-Pin Flash, 8-Bit USB Microcontrollers with XLP Technology

Microchip Technology 

PIC16(L)F1454/5/9

FIGURE 11-6:

FLASH PROGRAM MEMORY WRITE FLOWCHART

Start

Write Operation

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)

Enable Write/Erase

Operation (WREN = 1)

Load the value to write

(PMDATH:PMDATL)

Disable Interrupts

(GIE = 0)

Select

Program or Config. Memory

(CFGS)

Select Row Address

(PMADRH:PMADRL)

Select Write Operation

(FREE = 0)

Load Write Latches Only

(LWLO = 1)

Update the word counter

(word_cnt--)

Last word to Yes

write ?

No

Unlock Sequence

F(Figiguurere11x-x3)

No delay when writing to

Program Memory Latches

Increment Address

(PMADRH:PMADRL++)

Write Latches to Flash

(LWLO = 0)

Unlock Sequence

F(Figiguurere11x-x3)

CPU stalls while Write

operation completes

(2ms typical)

Disable

Write/Erase Operation

(WREN = 0)

Re-enable Interrupts

(GIE = 1)

End

Write Operation

DS41639A-page 120

Preliminary

 2012 Microchip Technology Inc.

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