h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 142
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h8s-2158
Manufacturer Part Number
h8s-2158
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2158.pdf
(927 pages)
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Section 5 Interrupt Controller
5.6
The interrupt controller has two modes: Interrupt control mode 0 and interrupt control mode 1.
Interrupt operations differ depending on the interrupt control mode. NMI interrupts and address
break interrupts are always accepted except for in reset state or in hardware standby mode. The
interrupt control mode is selected by SYSCR. Table 5.4 shows the interrupt control modes.
Table 5.4
Figure 5.4 shows a block diagram of the priority decision circuit.
Rev. 3.00 Jan 25, 2006 page 90 of 872
REJ09B0286-0300
Interrupt
Control
Mode
0
1
Interrupt Control Modes and Interrupt Operation
INTM1
0
Interrupt
source
Interrupt Control Modes
SYSCR
Figure 5.4 Block Diagram of Interrupt Control Operation
INTM0
0
1
Interrupt control modes
acceptance control
and 3-level mask
ICR
Priority
Setting
Registers
ICR
ICR
Interrupt
0 and 1
control
I
UI
Interrupt
Mask Bits
I
I, UI
Default priority
determination
Description
Interrupt mask control is performed by
the I bit. Priority levels can be set with
ICR.
3-level interrupt mask control is
performed by the I bit. Priority levels
can be set with ICR.
Vector
number
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