M16C1N Datasheet, PDF (208/238 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/10 SERIES

M16C/1N Group
19. Flash Memory Version
19.7 Standard Serial Input/Output 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 the M16C/1N group. 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.
There are actually two standard serial I/O modes: mode 1, which is clock synchronized, and mode 2,
which is asynchronized.
Table 19.7 lists pin functions (flash memory standard serial I/O mode). Figure 19.13 shows pin connec-
tions for standard serial I/O mode.
19.7.1 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 the description of 19.3 Functions to Inhibit Rewriting Flash
Memory Version).
Rev.1.00 Oct 20, 2004 page 196 of 222
REJ09B0007-0100Z