TMP86FS28DFG datasheet(250/272 Pages) TOSHIBA

tên linh kiện	TMP86FS28DFG

Giải thích chi tiết về linh kiện	8 Bit Microcontroller

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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.

TMP86FS28DFG bảng dữ liệu(PDF) 250 Page - Toshiba Semiconductor