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PIC16F15213 Datasheet(PDF) 115 Page - Microchip Technology

Part # PIC16F15213
Description  PIC16F15213/14/23/24/43/44 Low Pin Count Microcontrollers
PDF  439 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F15213 Datasheet(HTML) 115 Page - Microchip Technology

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Figure 15-5. Program Flash Memory Write Sequence
Filename:
PFM Write Flowchart.vsdx
Title:
Last Edit:
11/13/2019
First Used:
Notes:
Start Write Operation
Determine number of
words to be written into
PFM or Configuration
Memory. The number of
words cannot exceed the
number of words per row
(word_cnt)
Select
PFM 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
(1)
No delay when writing to
PFM Latches
Re-enable interrupts
(GIE =
1)
Write Latches to PFM
(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
(1)
Re-enable interrupts
(GIE =
1)
Yes
No
PIC16F15213/14/23/24/43/44
NVM - Nonvolatile Memory Control
© 2020-2022 Microchip Technology Inc.
and its subsidiaries
Data Sheet
DS40002195E-page 115



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