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17.9 Standard Serial I/O Mode
In standard serial input/output mode, the user ROM area can be rewritten while the microcomputer is
mounted on-board by using a serial programmer which is applicable for the M16C/26A group. For more
information about serial programmers, contact the manufacturer of your serial programmer. For details on
how to use the serial programmer, refer to the user's manual included with your serial programmer.
Table 17.9.1 shows pin functions (flash memory standard serial input/output mode). Figures 17.9.1 and
17.9.2 show pin connections for standard serial input/output mode.
17.9.1 ID Code Check Function
This function determines whether the ID codes sent from the serial programmer and those written in the
flash memory match. (Refer to 17.3 Functions To Prevent Flash Memory from Rewriting.)
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17. Flash Memory Version
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