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MC908QL3DW Datasheet(PDF) 39 Page - Motorola, Inc |
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MC908QL3DW Datasheet(HTML) 39 Page - Motorola, Inc |
39 / 222 page 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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