h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 191
h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
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The above contention will not occur if an enable bit or interrupt source flag is cleared to 0 while
the interrupt is masked.
5.5.2
Instructions that disable interrupts are LDC, ANDC, ORC, and XORC. After any of these
instructions is executed, all interrupts including NMI are disabled and the next instruction is
always executed. When the I bit is set by one of these instructions, the new value becomes valid
two states after execution of the instruction ends.
5.5.3
There are times when interrupt acceptance is disabled by the interrupt controller.
The interrupt controller disables interrupt acceptance for a 3-state period after the CPU has
updated the mask level with an LDC, ANDC, ORC, or XORC instruction.
B
Instructions that Disable Interrupts
Times when Interrupts Are Disabled
Figure 5-8 Contention between Interrupt Generation and Disabling
Rev. 6.00 Feb 22, 2005 page 131 of 1484
Section 5 Interrupt Controller
REJ09B0103-0600
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