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H8SX/1663 Datasheet(PDF) 999 Page - Renesas Technology Corp |
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H8SX/1663 Datasheet(HTML) 999 Page - Renesas Technology Corp |
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999 / 1158 page  Section 21 Flash Memory (0.18- µm F-ZTAT Version) Rev.1.00 Jun. 07, 2006 Page 947 of 1102 REJ09B0294-0100 Transfer of the programming program Host Boot program Programming selection (H'43, H'44) ACK Programming 128-byte programming (address, data) ACK 128-byte programming (H'FFFFFFFF) ACK Repeat Figure 21.24 Programming Sequence • Erasure Erasure is executed by the erasure selection and block erasure commands. Firstly, erasure is selected by the erasure selection command and the boot program then erases the specified block. The command should be repeatedly executed if two or more blocks are to be erased. Sending a block erasure command from the host with the block number H'FF will stop the erasure operating. On completion of erasing, the boot program will wait for selection of programming or erasing. The sequence for the erasure selection and block erasure commands is shown in figure 21.25. Transfer of erasure program Host Boot program Preparation for erasure (H'48) ACK Erasure Erasure (Erasure block number) Erasure (H'FF) ACK ACK Repeat Figure 21.25 Erasure Sequence |
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