TMP86C909XB Toshiba, TMP86C909XB Datasheet - Page 177

• Manufacturer Part Number: TMP86C909XB
• Description: EMULATION CHIP FOR TMP86F SDIP
• Manufacturer: Toshiba

Specifications of TMP86C909XB

• Accessory Type: Adapter
• For Use With/related Products: TMP86F SDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.7 Error Code
15.7 Error Code
15.8 Checksum (SUM)
15.8.1 Calculation Method
When detecting an error, the device transmits the error code to the external controller, as shown in Table 15-14.
Note: If a password error occurs, TMP86F409NG does not transmit an error code.
or flash memory SUM output command is calculated in the manner, as shown above.
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,
Table 15-14 Error Code
A1H, A1H, A1H
A3H, A3H, A3H
62H, 62H, 62H
63H, 63H, 63H
Transmit Data
A1H
B2H
C3H
D4H
If the data to be calculated consists of the four bytes,
the checksum of the data is as shown below.
A1H + B2H + C3H + D4H = 02EAH
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Framing error in the received data.
Overrun error in the received data.
Baud rate modification error.
Operation command error.
SUM (HIGH)= 02H
SUM (LOW)= EAH
Meaning of Error Data
TMP86F409NG