tmp88fw45afg TOSHIBA Semiconductor CORPORATION, tmp88fw45afg Datasheet - Page 269

• Manufacturer Part Number: tmp88fw45afg
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

21.7
21.8
21.8.1
21.8.2
When detecting an error, the device transmits the error code to the external controller, as shown in Table 21-14.
Note:If a password error occurs, TMP88FW45AFG does not transmit an error code.
Error Code
Checksum (SUM)
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,
The data used to calculate the checksum is listed in Table 21-15.
Calculation Method
Calculation data
Table 21-14 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
Page 255
Framing error in the received data.
SUM (HIGH)= 02H
SUM (LOW)= EAH
Overrun error in the received data.
Baud rate modification error.
Operation command error.
Meaning of Error Data
TMP88FW45AFG