Hardware manual

Microcomputer Technical Q&A
105
Q&A No.: QAH8S-230
Category: SCI
Subject: SCI Transmission Using DTC
Question
Is it possible to performs SCI transmission by activating the DTC at successive timer compare
matches?
Answer
No. The reason is that, in DTC data transfer, TDRE is cleared to 0 in the serial data register (SSR)
only when the DTC activation source is the SCI transmission-completed interrupt.
Applicable Products
Applicability Series Applicability Series Applicability Series
Entire H8S Series Yes H8S/2655 Yes H8S/2350
Yes H8S/2355 Yes H8S/2357 Yes H8S/2345
Yes H8S/2245 H8S/2148 H8S/2144
H8S/2138 H8S/2134 H8S/2128
H8S/2124 — — — —