HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 103
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HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
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3.1
This LSI has three operating modes (modes 1 to 3). The operating mode is determined by the
setting of the mode pins (MD1 and MD0). Table 3.1 shows the MCU operating mode selection.
Table 3.1 lists the MCU operating modes.
Table 3.1
MCU
Operating
Mode
0
1
2
3
Mode 1 is an expanded mode that allows access to external memory and peripheral devices. With
modes 2 and 3, operation begins in single-chip mode after reset release, but a transition can be
made to external expansion mode by setting the EXPE bit in MDCR to 1.
Mode 0 cannot be used in this LSI. Thus, mode pins should be set to enable mode 1, 2 or 3 in
normal program execution state. Mode pins should not be changed during operation.
3.2
The following registers are related to the operating mode. For details on the bus control register
(BCR), refer to section 6.3.1, Bus Control Register (BCR).
Mode control register (MDCR)
System control register (SYSCR)
Serial timer control register (STCR)
MCU Operating Mode Selection
Register Descriptions
MCU Operating Mode Selection
MD1
0
1
0
1
0
1
MD0
Section 3 MCU Operating Modes
CPU
Operating
Mode
—
Normal
Advanced
Normal
Description
—
Expanded mode with on-chip ROM disabled Disabled
Expanded mode with on-chip ROM enabled
Single-chip mode
Expanded mode with on-chip ROM enabled
Single-chip mode
Rev. 2.0, 08/02, page 63 of 788
On-Chip
ROM
—
Enabled
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