56
Mode 7 is single-chip modes that operate using the on-chip ROM, RAM, and registers. All I/O
ports are available. Mode 7 is an advanced mode with a maximum address space of 1 Mbyte.
The H8/3022 Series can be used only in modes 1, 3, or 5 to 7. The inputs at the mode pins must
select one of these seven modes. The inputs at the mode pins must not be changed during
operation.
3.1.2 Register Configuration
The H8/3022 Series has a mode control register (MDCR) that indicates the inputs at the mode pins
(MD
2
and MD
0
), and a system control register (SYSCR). Table 3-2 summarizes these registers.
Table 3-2 Registers
Address
*
Name
Abbreviation
R/W
Initial Value
H'FFF1
Mode control register
MDCR
R
Undetermined
H'FFF2
System control register
SYSCR
R/W
H'0B
Note:
*
The lower 16 bits of the address are indicated.