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TMP86FS49AIUG Datasheet(PDF) 270 Page - Toshiba Semiconductor

Part # TMP86FS49AIUG
Description  8 Bit Microcontroller
PDF  296 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP86FS49AIUG Datasheet(HTML) 270 Page - Toshiba Semiconductor

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Page 254
20. Serial PROM Mode
20.7 Error Code
TMP86FS49AIUG
20.7 Error Code
When detecting an error, the device transmits the error code to the external controller, as shown in Table 20-14.
Note: If a password error occurs, TMP86FS49AIUG does not transmit an error code.
20.8 Checksum (SUM)
20.8.1 Calculation Method
The checksum (SUM) is calculated with the sum of all bytes, and the obtained result is returned as a word.
The data is read for each byte unit and the calculated result is returned as a word.
Example:
The checksum which is transmitted by executing the flash memory write command, RAM loader command,
or flash memory SUM output command is calculated in the manner, as shown above.
Table 20-14 Error Code
Transmit Data
Meaning of Error Data
62H, 62H, 62H
Baud rate modification error.
63H, 63H, 63H
Operation command error.
A1H, A1H, A1H
Framing error in the received data.
A3H, A3H, A3H
Overrun error in the received data.
A1H
If the data to be calculated consists of the four bytes,
the checksum of the data is as shown below.
B2H
A1H + B2H + C3H + D4H = 02EAH
SUM (HIGH)= 02H
SUM (LOW)= EAH
C3H
D4H



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