HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 278
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 10 Interrupt Controller (INTC)
10.3.5
IRR0 is an 8-bit register that indicates interrupt requests from external input pins IRQ7 to IRQ0.
This register is initialized to H'00 by a power-on reset or manual reset, but is not initialized in
standby mode.
Rev. 4.00 Sep. 14, 2005 Page 228 of 982
REJ09B0023-0400
Bit
7
6
5
4
3
2
1
0
Interrupt Request Register 0 (IRR0)
Bit Name
IRQ7R
IRQ6R
IRQ5R
IRQ4R
IRQ3R
IRQ2R
IRQ1R
IRQ0R
Initial
Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
IRQn Interrupt Request
Indicates whether there is interrupt request input to the
IRQn pin. When edge-detection mode is set for IRQn,
an interrupt request is cleared by writing 0 to the IRQnR
bit after reading IRQnR = 1.
When level-detection mode is set for IRQn, an interrupt
request is set/cleared by only 1/0 input to the IRQn pin.
IRQnR
0: No interrupt request input to IRQn pin
1: Interrupt request input to IRQn pin
n = 0 to 7
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