HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 72

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

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
to MDS0 are read-only bits. The mode pin (MD
MDCR is read.
Bit
Initial value
Read/Write
Note:
2
to MD
*
Determined by pins MD to MD .
0
(the current operating mode). MDS2 to MDS0 correspond to MD
Reserved bits
—
—
7
1
—
—
6
1
2
—
—
5
0
0
Reserved bits
2
57
to MD
—
—
4
0
0
) levels are latched into these bits when
—
—
3
0
MDS2
Mode select 2 to 0
Bits indicating the current
operating mode
—
R
2
*
MDS1
2
—
to MD
R
1
*
0
MDS0
. MDS2
—
R
0
*