Section 5
Interrupt Controller
Rev. 1.00 Mar. 12, 2008 Page 101 of 1178
REJ09B0403-0100
(2) Determination of Priority
The DTC activation source is selected in accordance with the default priority order, and is not
affected by mask or priority levels. See section 7.5, Location of Register Information and DTC
Vector Table, for the respective priorities.
(3) Operation
Order
If the same interrupt is selected as a DTC activation source and a CPU interrupt source, the DTC
data transfer is performed first, followed by CPU interrupt exception handling.
Table 5.9 summarizes interrupt source selection and interrupt source clearing control according to
the settings of the DTCE bit of DTCERA to DTCERF in the DTC and the DISEL bit of MRB in
the DTC.
Table 5.9
Interrupt Source Selection and Clearing Control
Settings
DTC
Interrupt Source Selection/Clearing Control
DTCE DISEL
DTC
CPU
0 X
×
∆
1 0
∆
×
1
∆
[Legend]
∆
:
The relevant interrupt is used. Interrupt source clearing is performed.
(The CPU should clear the source flag in the interrupt handling routine.)
:
The relevant interrupt is used. The interrupt source is not cleared.
×
:
The relevant interrupt cannot be used.
X: Don't
care
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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