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PIC16F1503 bảng dữ liệu(PDF) 91 Page - Microchip Technology

tên linh kiện PIC16F1503
Giải thích chi tiết về linh kiện  14-Pin Flash, 8-Bit Microcontrollers
PDF  340 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

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 2011 Microchip Technology Inc.
Preliminary
DS41607A-page 91
PIC16(L)F1503
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)
No
Yes
Figure 10-3
Figure 10-3



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