h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 103
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
- Current page: 103 of 766
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Table 4.3
[Legend]
1:
0:
—:
4.5
Interrupts are controlled by the interrupt controller. The interrupt controller has two interrupt
control modes and can assign interrupts other than NMI to eight priority/mask levels to enable
multiplexed interrupt control. The source to start interrupt exception handling and the vector
address differ depending on the product. For details, refer to section 5, Interrupt Controller.
Interrupt exception handling is conducted as follows:
1. The values in the program counter (PC), condition code register (CCR), and extended control
2. The interrupt mask bit is updated and the T bit is cleared to 0.
3. A vector address corresponding to the interrupt source is generated, the start address is loaded
Interrupt Control Mode
0
2
register (EXR) are saved to the stack.
from the vector table to the PC, and program execution begins from that address.
Set to 1
Cleared to 0
Retains value prior to execution
Interrupts
Statuses of CCR and EXR after Trace Exception Handling
I
1
Trace exception handling cannot be used.
CCR
UI
—
Rev. 2.00 Dec. 05, 2005 Page 65 of 724
I2 to I0
—
Section 4 Exception Handling
EXR
REJ09B0200-0200
0
T
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