HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 61

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Notes: The H8/3644 is shown as an example.
H'FFA0
H'FFFF
H'FB80
H'FF7F
H'FF9F
H'F77F
H'FF80
H'002F
H'F770
H'0000
H'0030
H'7FFF
* Internal I/O registers in areas assigned to timer X (H'F770 to H'F77F),
SCI3 (H'FFA8 to H'FFAD), and timer V (H'FFB8 to H'FFBD) are accessed in three
states.
Figure 2.17 Data Size and Number of States for Access to and from
Internal I/O registers
Internal I/O registers
Interrupt vector area
On-chip ROM
On-chip RAM
(48 bytes)
(16 bytes)
(96 bytes)
Reserved
Reserved
Reserved
On-Chip Peripheral Modules
1,024 bytes
Word
—
—
Access
Byte
—
—
—
States
2 or 3 *
3 *
—
—
—
2
2
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