h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 168

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
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 table 7.1 for the respective
priority.
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 5.7 shows the interrupt factor clear control and selection of interrupt factors by specification
of the DTCE bit of DTC's DTCER, and the DISEL bit of DTC's MRB.
Table 5.7
Legend:
O : The relevant interrupt is used. Interrupt source clearing is performed.
o : The relevant interrupt is used. The interrupt source is not cleared.
*: Don’t care
Note: The SCI, IIC, LPC, or A/D converter interrupt source is cleared when the DTC reads or
Rev. 3.00 Mar 21, 2006 page 114 of 788
REJ09B0300-0300
DTCE
0
1
: The relevant interrupt cannot be used.
(The CPU should clear the source flag in the interrupt handling routine.)
writes to the prescribed register, and is not dependent upon the DISEL bit.
Interrupt Source Selection and Clearing Control
Settings
DTC
DISEL
*
0
1
Interrupt Sources Selection/Clearing Control
DTC
O
o
CPU
O
O