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Is it likely to use external address area when single chip mode is used?

Latest Updated:11/22/2007

Question:

Is it possible to use external address area when single chip mode is used?

Answer:

Yes.  It is possible to use external address area when single chip mode is used by setting EXPE bit of system control register (SYSCR).  In that case, the data direction register (DDR) of the port corresponding to the address pin must be output setting.
Suitable Products
H8SX/1720S (H8SX/1720, H8SX/1720S)
H8SX/1668R, H8SX/1668M
H8SX/1663
H8SX/1658R, H8SX/1658M
H8SX/1657
H8SX/1653
H8SX/1650, H8SX/1651
H8SX/1648A, H8SX/1648L
H8SX/1638, H8SX/1638L
H8SX/1622
H8SX/1544
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