跳至主要內容
Knowledgebase
Home
Renesas Electronics Taiwan - Knowledgebase

How can I use ports IRQ0-A and IRQ0-B properly?

Latest Updated:03/26/2009

Question:

How can I use ports IRQ0-A and IRQ0-B properly?

Answer:

Either of A terminal( IRQn-A) and B terminal (IRQn-B) assigned at same port IRQ0 ~ 11can be used as an external interupt pin. The terminal unselected as an external interuput can be used as general I/O port. Please set up the port function control register B(PFCRB) and port function control register .( see the chapter of I/O port in the hardware manual).
Suitable Products
H8SX/1600
H8SX/1663
H8SX/1657
H8SX/1653
H8SX/1650, H8SX/1651
H8SX/1648A, H8SX/1648L
H8SX/1638, H8SX/1638L
H8SX/1622
H8SX/1580
H8SX/1544
H8SX/1520R
H8SX/1520