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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HCS08 데이터시트(PDF) 51 Page - Motorola, Inc |
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HCS08 데이터시트(HTML) 51 Page - Motorola, Inc |
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51 / 290 page  Data Sheet — MC9S08GB60/D V1.5 MOTOROLA 51 MC9S08GB/GT A strictly monitored procedure must be followed or the command will not be accepted. This minimizes the possibility of any unintended changes to the FLASH memory contents. The command complete flag (FCCF) indicates when a command is complete. The command sequence must be completed by clearing FCBEF to launch the command. Figure 4-2 below is a flowchart for executing all of the commands except for burst programming. The FCDIV register must be initialized before using any FLASH commands. This only must be done once following a reset. Figure 4-2 FLASH Program and Erase Flowchart START WRITE TO FLASH TO BUFFER ADDRESS AND DATA WRITE COMMAND TO FCMD NO YES FPVIO OR WRITE 1 TO FCBEF TO LAUNCH COMMAND AND CLEAR FCBEF (2) 1 0 FCCF ? ERROR EXIT DONE (2) Wait at least four bus cycles before checking FCBEF or FCCF. 0 FACCERR ? CLEAR ERROR FACCERR ? WRITE TO FCDIV(1) (1) Only required once after reset. |
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