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SH7052 Datasheet(PDF) 116 Page - Renesas Technology Corp

Part # SH7052
Description  SuperHTM RISC engine
PDF  919 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7052 Datasheet(HTML) 116 Page - Renesas Technology Corp

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90
• Bit 8—NMI Edge Select (NMIE)
Bit 8: NMIE
Description
0
Interrupt request is detected on falling edge of NMI input (Initial value)
1
Interrupt request is detected on rising edge of NMI input
• Bits 7 to 4—IRQ0 to IRQ3 Sense Select (IRQ0S to IRQ3S): These bits set the IRQ0 to IRQ3
interrupt request detection mode.
Bits 7 to 4:
IRQ0S to IRQ3S
Description
0
Interrupt request is detected on low level of IRQ input
(Initial value)
1
Interrupt request is detected on falling edge of IRQ input
• Bits 3 to 0—Reserved: These bits always read 0. The write value should always be 0.
6.3.3
IRQ Status Register (ISR)
ISR is a 16-bit register that indicates the interrupt request status of the external interrupt input pins
IRQ0 to IRQ3. When IRQ interrupts are set to edge detection, held interrupt requests can be
withdrawn by writing 0 to IRQnF after reading IRQnF = 1.
A reset and hardware standby mode initialize ISR but software standby mode does not.
Bit:
15
14
13
12
11
10
9
8
——
——
———
—
Initial value:
0
0
0
0
0
0
0
0
R/W:
R
R
R
R
R
R
R
R
Bit:
7
6
5
4
3
2
1
0
IRQ0F
IRQ1F
IRQ2F
IRQ3F
—
—
—
—
Initial value:
0
0
0
0
0
0
0
0
R/W:
R/W
R/W
R/W
R/W
R
R
R
R
• Bits 15 to 8—Reserved: These bits always read 0. The write value should always be 0.



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