2.2 Maps
61
Note 1:
Access prohibited
Note 2:
The notation R/W! in the access column indicates registers having one or more read-only or write-
only bits. For details, refer to the register listing under each individual resource.
Note 3:
The notation R/W!, R/W* or W in the access column indicates registers in which access by read-
modify-write instructions (bit set instructions, etc.) yields the designated value in the particular
bit(s) accessed, but which also contain other bits having write-only access, which may cause
abnormal operation if unintentionally accessed. Access by such instructions should therefore be
avoided.
Description of initial values
[0]: ......... This bit is initialized to value 0.
[1]: ......... This bit is initialized to value 1.
[*]: ......... This bit is initialized to value 1 or 0, according to the level of the MD0 to MD2 bits.
[X]: ........ Initial value of this bit is undefined.
[-]: .......... This bit is not used. Initial value undefined.
[CAUTION]
Write-only bits are initialized after reset to the value indicated in as the ‘initial value.’ Users
should take care to note that this is not the read value.
Also, the LPMCR, CKSCR and WDTC registers may be initialized or not depending on the
type of reset applied. The initial value shown is applied only when these registers are
initialized.
0000B8H
Interrupt control register 08
ICR08
R/W!
Interrupt controller
00000111
0000B9H
Interrupt control register 09
ICR09
R/W!
00000111
0000BAH
Interrupt control register 10
ICR10
R/W!
00000111
0000BBH
Interrupt control register 11
ICR11
R/W!
00000111
0000BCH
Interrupt control register 12
ICR12
R/W!
00000111
0000BDH
Interrupt control register 13
ICR13
R/W!
00000111
0000BEH
Interrupt control register 14
ICR14
R/W!
00000111
0000BFH
Interrupt control register 15
ICR15
R/W!
00000111
0000C0H
to
0000FFH
System reserved area
–
*1
–
Table 2.2.1 MB90660A I/O Map (5)
Address
Register
Abbrevia-
tion
Access
Resource Name
Initial Value