HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 243

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

8.3.3
ICR1 is a 16-bit register that specifies the detection mode for external interrupt input pins IRQ4 to
IRQ0 individually: rising edge, falling edge, high level, or low level.
Bit
15
14
13 to 10 
Interrupt Control Register 1 (ICR1)
Bit Name

IRQE*
Initial
Value
0
1
All 0
R/W
R
R/W
R
Description
Reserved
This bit is always read as 0. The write value should
always be 0. If 1 is written to this bit, correct operation
cannot be guaranteed.
Interrupt Request Enable
Enables or disables the use of pins IRQ7, IRQ4 to IRQ0
as six independent interrupt pins.
0 : Use of pins IRQ7, IRQ4 to IRQ0 as six independent
1 : Use of pins IRQ7, IRQ4 to IRQ0 as interrupt pins
Reserved
These bits are always read as 0. The write value should
always be 0. If 1 is written to these bits, correct
operation cannot be guaranteed.
interrupt pins enabled
disabled
Rev. 1.00, 02/04, page 205 of 804