M16C30P_07 Datasheet, PDF (296/317 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/30 SERIES

M16C/30P Group
22. Usage Precaution
22.9.2 UART
22.9.2.1 Special Mode 1(I²C Mode)
When generating start, stop and restart conditions, set the STSPSEL bit in the UiSMR4 register to “0” and wait
for more than half cycle of the transfer clock before setting each condition generate bit (STAREQ, RSTAREQ
and STPREQ) from “0” to “1”.
22.9.2.2 Special Mode 4 (SIM Mode)
A transmit interrupt request is generated by setting the U2C1 register U2IRS bit to “1” (transmission complete)
and U2ERE bit to “1” (error signal output) after reset. Therefore, when using SIM mode, be sure to clear the IR
bit to “0” (no interrupt request) after setting these bits.
Rev.1.22 Mar 29, 2007 Page 280 of 291
REJ09B0179-0122