R8C/13 Group
17.5 Standard Serial I/O Mode
17.5 Standard Serial I/O Mode
In standard serial I/O mode, the user ROM area can be rewritten while the microcomputer is mounted on-
board by using a serial programmer suitable for this microcomputer. Standard serial I/O mode has stan-
dard serial I/O mode 1 of the clock synchronous serial and standard serial I/O mode 2 of the clock
asynchronous serial. Refer to "Appendix 2 Connecting Examples for Serial Writer and On-chip Debug-
ging Emulator". For more information about serial programmers, contact the manufacturer of your serial
programmer. For details on how to use, refer to the user’s manual included with your serial programmer.
Table 17.7 lists pin functions (flash memory standard serial input/output mode). Figures 17.13 to 17.15
show pin connections for standard serial I/O mode.
17.5.1 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 Section 17.3, “Functions to Prevent Flash Memory from Rewriting”).
Rev.1.20 Jan 27, 2006 page 182 of 205
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