TMP86FS27FG 查看數據表（PDF） - Toshiba

零件编号

产品描述 (功能)

生产厂家

TMP86FS27FG

CMOS 8-Bit Microcontroller

Toshiba 

TMP86FS27

2.8 Error Code

When the device detects an error, the error codes are sent to the controller.

Table 2.8.1 Error Code

Transmit Data

62H, 62H, 62H

63H, 63H, 63H

A1H, A1H, A1H

A3H, A3H, A3H

Meaning of Transmit Data

Baud rate modification error occurred.

Operating command error occurred.

Framing error in received data occurred.

Overrun error in received data occurred.

2.9 Checksum (SUM)

(1) Calculation method

SUM consists of byte + byte.... + byte, the checksum of which is returned in word as the

result.

Namely, data is read out in byte and checksum of which is calculated, with the result

returned in word.

Example:

A1H

B2H

C3H

D4H

If the data to be calculated consists of the four bytes shown to the

left, SUM of the data is

A1H + B2H + C3H + D4H = 02EAH

SUM (HIGH)

= 02H

SUM (LOW)

= EAH

The SUM returned when executing the flash memory write command, RAM

loader command, or flash memory SUM command is calculated in the manner

shown above.

(2) Calculation data

The data from which SUM is calculated are listed in Table 2.9.1 below.

Table 2.9.1 Checksum Calculation Data

Operating Mode

Calculation Data

Remarks

Flash memory writing mode

Even when written to part of the flash memory area,

data in the entire memory area (60 Kbytes) is

Data in the entire area (60 Kbytes) of flash calculated.

Flash memory Checksum output memory

mode

The length of data, address, record type and

checksum in Intel Hex format are not included in SUM.

RAM loader mode

Data written to RAM

The length of data, address, record type and

checksum in Intel Hex format are not included in SUM.

Product discrimination code out- Checksum of transferred data (from 9th to For details, refer to “2.6.4 Product Discrimination

put mode

18th byte)

Code Output Mode”.

86FS27-21

2007-08-07

Share Link: