3.2 Mode Control Register (MDCR)
MDCR is an 8-bit read-only register that indicates the current operating mode of the
H8/3048 Series.
Bits 7 and 6—Reserved: Read-only bits, always read as 1.
Bits 5 to 3—Reserved: Read-only bits, always read as 0.
Bits 2 to 0—Mode Select 2 to 0 (MDS2 to MDS0): These bits indicate the logic levels at pins
MD
2
to MD
0
(the current operating mode). MDS2 to MDS0 correspond to MD
2
to MD
0
. MDS2
to MDS0 are read-only bits. The mode pin (MD
2
to MD
0
) levels are latched into these bits when
MDCR is read.
Bit
Initial value
Read/Write
7
—
1
—
6
—
1
—
5
—
0
—
4
—
0
—
3
—
0
—
0
MDS0
—
R
*
2
MDS2
—
R
1
MDS1
—
R
*
*
Reserved bits
Mode select 2 to 0
Bits indicating the current
operating mode
Reserved bits
Note: Determined by pins MD to MD .
*
2
0
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