Hardware manual

Microcomputer Technical Q&A
138
Q&A No.: QAH8S-250
Category: I/O Ports
Subject: Multiplexing as IRQ3 and LWR
Question
The PF3 pin is also multiplexed as LWR and IRQ3. Can IRQ3 input be used in modes 1, 2, 4, 5,
and 6?
Answer
No. The PF3/LWR/IRQ3 pin becomes the LWR output automatically in modes 1, 2, 4, 5, and 6,
and so cannot be used as the IRQ3 input.
Applicable Products
Applicability Series Applicability Series Applicability Series
Entire H8S Series H8S/2655 H8S/2350
H8S/2355 H8S/2357 Yes H8S/2345
Yes H8S/2245 H8S/2148 H8S/2144
H8S/2138 H8S/2134 H8S/2128
H8S/2124 — — — —