H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 105

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

The external expansion modes allow switching between 8-bit and 16-bit bus modes. After program
execution starts, an 8-bit or 16-bit address space can be set for each area, depending on the bus
controller setting. If 16-bit access is selected for any one area, 16-bit bus mode is set; if 8-bit
access is selected for all areas, 8-bit bus mode is set.
Note that the functions of each pin depend on the operating mode.
The H8S/2351 can be used only in modes 1 to 7. This means that the mode pins must be set to
select one of these modes. Do not change the inputs at the mode pins during operation.
3.1.3
The H8S/2350 Group has a mode control register (MDCR) that indicates the inputs at the mode
pins (MD
H8S/2350 Group. Table 3.3 summarizes these registers.
Table 3.3
Note:
Name
Mode control register
System control register
* Lower 16 bits of the address.
2
Register Configuration
to MD
MCU Registers
0
), and a system control register (SYSCR) that controls the operation of the
Abbreviation
MDCR
SYSCR
R
R/W
R/W
Rev. 3.00 Sep 15, 2006 page 71 of 988
Initial Value
Undefined
H'01
Section 3 MCU Operating Modes
REJ09B0330-0300
H'FF3B
Address *
H'FF39