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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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TMP86FS28DFG 数据表(PDF) 250 Page - Toshiba Semiconductor |
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TMP86FS28DFG 数据表(HTML) 250 Page - Toshiba Semiconductor |
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250 / 272 page  Page 238 18. Serial PROM Mode 18.8 Checksum (SUM) TMP86FS28DFG 18.8.2 Calculation data The data used to calculate the checksum is listed in Table 18-14. Table 18-14 Checksum Calculation Data Operating Mode Calculation Data Description Flash memory writing mode Data in the entire area of the flash memory Even when a part of the flash memory is written, the checksum of the entire flash memory area (1000H to FFFH) is calculated. The data length, address, record type and checksum in Intel Hex format are not included in the checksum. Flash memory SUM output mode Product ID Code Output mode 9th through 18th bytes of the transferred data For details, refer to " 18.11 Product ID Code ". Flash Memory Status Output mode 9th through 12th bytes of the transferred data For details, refer to " 18.12 Flash Memory Status Code " Flash Memory Erasing mode All data in the erased area of the flash memory (the whole or part of the flash memory) When the sector erase is executed, only the erased area is used to calculate the checksum. In the case of the chip erase, an entire area of the flash memory is used. |
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