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TMP92FD54AI Datasheet(PDF) 27 Page - Toshiba Semiconductor |
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TMP92FD54AI Datasheet(HTML) 27 Page - Toshiba Semiconductor |
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27 / 84 page  2006-01-27 92FD54AI-27 TMP92FD54AI (Step 3) After the password has been checked, (a), the rewrite routine, must be transferred from the source (the controller). The boot ROM then loads the routine into the internal RAM. It must be ensured, however, that the routine is stored within the RAM address area 000400H to 006BFFH. (Step 4) The CPU jumps to (a), the rewrite routine, in RAM and the rewrite routine erases the old user application program area (all the blocks at once). (TMP92FD54AI) Flash memory RAM Old user application program (or erased) (Controller) New user application program (I/O) (a) Rewrite routine Boot ROM SIO1 (a) Rewrite routine (TMP92FD54AI) Flash memory RAM (Controller) New user application program (I/O) (a) Rewrite routine Boot ROM SIO1 (a) Rewrite routine Erased |
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