H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 106

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 3 MCU Operating Modes
3.2
3.2.1
MDCR is an 8-bit read-only register that indicates the current operating mode of the H8S/2350
Group.
Bit 7—Reserved: Read-only bit, always read as 1.
Bits 6 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 input levels at pins
MD
MDS2 to MDS0 are read-only bits, they cannot be written to. The mode pin (MD
levels are latched into these bits when MDCR is read. These latches are canceled by a power-on
reset, but are retained after a manual reset.
3.2.2
Bit 7—Reserved: Only 0 should be written to this bit.
Bit 6—Reserved: Read-only bit, always read as 0.
Rev. 3.00 Sep 15, 2006 page 72 of 988
REJ09B0330-0300
Bit
Initial value
R/W
Bit
Initial value
R/W
Note: * Determined by pins MD
2
to MD
Register Descriptions
Mode Control Register (MDCR)
System Control Register (SYSCR)
0
:
:
:
(the current operating mode). Bits MDS2 to MDS0 correspond to MD
:
:
:
R/W
—
—
—
7
1
7
0
—
—
—
—
6
0
6
0
2
to MD
INTM1
R/W
—
—
5
0
5
0
0
.
INTM0
R/W
—
—
4
0
4
0
NMIEG
R/W
—
—
3
0
3
0
MDS2
—*
—
—
R
2
2
0
MDS1
R/W
—*
—
R
1
1
0
2
to MD
2
to MD
RAME
MDS0
0
R/W
) input
—*
R
0
0
1
0
.