h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 108

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 3 MCU Operating Modes
3.1.2
The H8S/2169 or H8S/2149 has a mode control register (MDCR) that indicates the inputs at the
mode pins (MD1 and MD0), a system control register (SYSCR) and bus control register (BCR)
that control the operation of the MCU, and a serial/timer control register (STCR) that controls the
operation of the supporting modules. Table 3.2 summarizes these registers.
Table 3.2
Name
Mode control register
System control register
Bus control register
Serial/timer control register
Note:
3.2
3.2.1
MDCR is an 8-bit read-only register that indicates the operating mode setting and the current
operating mode of the MCU.
The EXPE bit is initialized in coordination with the mode pin states by a reset and in hardware
standby mode.
Rev. 3.00 Jan 18, 2006 page 80 of 1044
REJ09B0280-0300
Bit
Initial value
Read/Write
Note: * Determined by pins MD1 and MD0.
* Lower 16 bits of the address.
Register Configuration
Register Descriptions
Mode Control Register (MDCR)
MCU Registers
EXPE
R/W *
—*
7
Abbreviation
MDCR
SYSCR
BCR
STCR
—
—
6
0
—
—
5
0
R/W
R/W
R/W
R/W
R/W
—
—
4
0
—
—
3
0
Initial Value
Undetermined
H'09
H'D7
H'00
—
—
2
0
MDS1
—*
R
1
Address *
H'FFC5
H'FFC4
H'FFC6
H'FFC3
MDS0
—*
R
0