h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 92

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 3 MCU Operating Modes
3.2
The following registers are related to the operating mode.
• Mode control register (MDCR)
• System control register (SYSCR)
3.2.1
Note:
Rev. 2.00 Dec. 05, 2005 Page 54 of 724
REJ09B0200-0200
Bit
7
6 to 3
2
1
0
*
Bit Name


MDS2
MDS1
MDS0
Register Descriptions
Mode Control Register (MDCR)
Determined by pins MD2 to MD0.
Initial
Value
1
All 0
*
*
*
R/W


R
R
R
Descriptions
Reserved
This bit is always read as 1 and cannot be modified.
Reserved
These bits are always read as 0 and cannot be
modified.
Mode select 2 to 0
These bits indicate the input levels at pins MD2 to MD0
(the current operating mode). Bits MDS2 to MDS0
correspond to MD2 to MD0. MDS2 to MDS0 are read-
only bits and they cannot be written to. The mode pin
(MD2 to MD0) input levels are latched into these bits
when MDCR is read. These latches are canceled by a
reset. These latches are canceled by a power-on reset.