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MC908QL2M Datasheet(Hoja de datos) 39 Page - Motorola, Inc

No. de Pieza. MC908QL2M
Descripción  Microcontrollers
Descarga  222 Pages
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Fabricante  MOTOROLA [Motorola, Inc]
Página de inicio  http://www.freescale.com
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 39 page
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FLASH Memory (FLASH)
MC68HC908QL4 • MC68HC908QL3 • MC68HC908QL2 Data Sheet, Rev. 4
Freescale Semiconductor
39
Figure 2-4. FLASH Programming Flowchart
SET HVEN BIT
WRITE ANY DATA TO ANY FLASH ADDRESS
WITHIN THE ROW ADDRESS RANGE DESIRED
WAIT FOR A TIME, tNVS
SET PGM BIT
WAIT FOR A TIME, tPGS
WRITE DATA TO THE FLASH ADDRESS
TO BE PROGRAMMED
WAIT FOR A TIME, tPROG
CLEAR PGM BIT
WAIT FOR A TIME, tNVH
CLEAR HVEN BIT
WAIT FOR A TIME, tRCV
COMPLETED
PROGRAMMING
THIS ROW?
Y
N
END OF PROGRAMMING
The time between each FLASH address change (step 7 to step 7 loop),
must not exceed the maximum programming
time, tPROG max.
or the time between the last FLASH address programmed
to clearing PGM bit (step 7 to step 10)
NOTES:
1
3
4
5
6
7
8
10
11
12
13
Algorithm for Programming
a Row (32 Bytes) of FLASH Memory
This row program algorithm assumes the row/s
to be programmed is initially erased.
9
READ THE FLASH BLOCK PROTECT REGISTER
2
,




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