Toshiba TLCS-870/C1 Series, Manual

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22. Serial PROM Mode
22.11 Intel Hex Format (Binary)
TMP89FM42
RA002
22.11Intel Hex Format (Binary)
For the following two commands, the Intel Hex format is used in part of the transfer format:
- Flash memory write command (0x30)
- RAM loader command (0x60)
For information on the definition of the Intel Hex format, refer to Table 22-20.
Data is in binary form. The start mark ":" must be transmitted as binary data of 0x3A.
1. After receiving the checksum of each data record, the TMP89FM42 goes into a wait state and awaits the
arrival of the start mark (0x3A ":") of the next data record. Although the external controller transmits data
other than 0x3A between records, the TMP89FM42 ignores such data when it is in this wait state.
2. The external controller must be provisioned so that after it transmits the checksum of end record, it goes
into a wait state and does not transmit any data until the arrival of 3-byte data (overwrite detection, upper
and lower bytes of the checksum). (3-byte data is used if the flash memory write command is used. If the
RAM loader command is used, the external controller awaits the arrival of 2-byte data, or upper and lower
bytes of the checksum.)
3. If a receiving error or Intel Hex format error occurs, the TMP89FM42 goes into an idle state without return-
ing an error code to the external controller. The Intel Hex format error occurs in the following cases:
- If the record type is other than 00h, 01h, or 02h
- If a checksum error of the Intel Hex format occurs
- If the data length of an extended record (record type = 0x02) is not 0x02
- If the TMP89FM42 receives the data record after receiving an extended record (record type = 0x02)
whose segment address is more than 0x2000
- I the data length of the end record (record type = 0x01) is not 0x00
- If the offset address of an extended record (record type = 0x02) is not 0x0000
Table 22-20 Definition of the Intel Hex Format
(1) (2) (3) (4) (5) (6)
Start
mark
Data length
(1 byte)
Offset address
(2 bytes)
Record type
(1 byte)
Data Checksum
(1 byte)
Data record
(record type = 00)
3A
Number of data
in a data field
Starting byte stor-
age address
* Specified using
big-endian
00
Data
(1 to 255 bytes)
(2) Data length
(3) Offset address
(4) Record type
(5) Data
Complement of 2 of the
sum total of the above
End record
(record type = 01)
3A 00 00 00 01 None
(2) Data length
(3) Offset address
(4) Record type
Complement of 2 of the
sum total of the above
Extended record
(record type = 02)
3A 02 00 00 02
Segment address
(2 bytes)
* Specified using
big-endian
(2) Data length
(3) Offset address
(4) Record type
(5) Segment address
Complement of 2 of the
sum total of the above