h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 145
h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
- Current page: 145 of 1547
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3.3
3.3.1
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is disabled.
Ports 1, A, B, and C function as an address bus, ports D and E function as a data bus, and part of
port F carries bus control signals.
The initial bus mode after a reset is 16 bits, with 16-bit access to all areas. However, note that if 8-
bit access is designated by the bus controller for all areas, the bus mode switches to 8 bits.
3.3.2
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is disabled.
Ports 1, A, B, and C function as an address bus, port D function as a data bus, and part of port F
carries bus control signals.
The initial bus mode after a reset is 8 bits, with 8-bit access to all areas. However, note that if 16-
bit access is designated by the bus controller for any area, the bus mode switches to 16 bits and
port E becomes a data bus.
3.3.3
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is enabled.
Ports 1, A, B, and C function as input port pins immediately after a reset. Address output can be
performed by setting the corresponding DDR (data direction register) bits to 1.
Port D functions as a data bus, and part of port F carries bus control signals.
The initial bus mode after a reset is 8 bits, with 8-bit access to all areas. However, note that if 16-
bit access is designated by the bus controller for any area, the bus mode switches to 16 bits and
port E becomes a data bus.
Operating Mode Descriptions
Mode 4
Mode 5
Mode 6
Rev. 6.00 Feb 22, 2005 page 85 of 1484
Section 3 MCU Operating Modes
REJ09B0103-0600
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