PIC16F1503T-EST View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1503T-EST

14-Pin Flash, 8-Bit Microcontrollers

Microchip Technology 

FIGURE 10-6:

FLASH 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)

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)

Enable Write/Erase

Operation (WREN = 1)

Load the value to write

(PMDATH:PMDATL)

Update the word counter

(word_cnt--)

Last word to

Yes

write ?

No

Unlock Sequence

(See Note 1)

No delay when writing to

Program Memory Latches

Increment Address

(PMADRH:PMADRL++)

PIC16(L)F1503

Rev. 10-000049A

7/30/2013

Write Latches to Flash

(LWLO = 0)

Unlock Sequence

(See Note 1)

CPU stalls while Write

operation completes

(2 ms typical)

Disable Write/Erase

Operation (WREN = 0)

Re-enable Interrupts

(GIE = 1)

End

Write Operation

Note 1: See Figure 10-3.

 2011-2015 Microchip Technology Inc.

DS40001607D-page 87

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