M16C6N4 Datasheet, PDF (376/406 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6N4)
23. Usage Precaution
23.8.3 SI/O3
The SOUT3 default value which is set to the SOUT3 pin by the SM37 in the S3C register bit approximately
10ns may be output when changing the SM33 bit in the S3C register from “0” (I/O port) to “1” (SOUT3
output and CLK3 function) while the SM32 bit in the S3C register to “0” (SOUT3 output) and the SM36 bit
is set to “1” (internal clock). And then the SOUT3 pin is held high-impedance.
If the level which is output from the SOUT3 pin is a problem when changing the SM33 bit from “0” to “1”,
set the default value of the SOUT3 pin by the SM37 bit.
Rev.2.30 Oct 24, 2005 page 358 of 376
REJ09B0009-0230