Maxim Integrated Ultra-High-Speed Flash Microcontroller - Manual (Page 168)

Ultra-High-Speed Flash
Microcontroller User’s Guide
Intel Hex File Format
Assemblers that are 8051-compatible produce an absolute output file in Intel hex format. These files are composed of a series of
records. Records in an Intel hex file have the following format:
The specific record elements are detailed as follows:
: II aaaa tt dddddd ... dd xx
where:
: Indicates a record beginning
II Indicates the record length
aaaa Indicates the 16-bit load address
tt Indicates the record type
dd Indicates hex data
xx Indicates the checksum = (two’s complement (II+aa+a+tt+dd+dd+...dd)
Record type 00 indicates a data record and type 01 indicates an end record. An end record appears as :00 00000 01 FF. These are
the only valid record types for a NIL hex file. Spaces are provided for clarity.
The following is a short Intel hex file. The data bytes begin at 01 and count up to 2F. Notice the record’s length, beginning address,
and record type at the start of each line and the checksum at the end:
:200000000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F20D0
:0F0020002122232425262728292A2B2C2D2E2F79
:00000001FF
Maxim Integrated