Chapter 5Interrupt ControllerNoise Filter Function V - 455.4.6 Edge Detection RegistersThis register is used to specify how to control edge detection circuity. It specifies whether to enable or disableboth-edge interrupt for each external interrupt pin.■ Edge Detection Register (IRQEDGESEL: 0x0000A056) [8, 16-bit access register]..When setting the generating condition of the external interrupt to the both-edge detection,select the rising edge by [5.2.7 External Interrupt Condition Specification Registers(EXTMD1, EXTMD0)].....If operating the edge detection register (IRQEDGESEL) to select the both-edge detection enableof IRQn, the value of port input register of the selected external interrupt pin is undefined and dis-agree with the pin input value.Execute one of the following, to monitor the value of the external interrupt pin.1. Do not select both-edge interrupt to monitor the value of the external interrupt pin.2. To select both-edge interrupt and monitor the value of the external interrupt pin, connectthe external inerrupt to the other general-purpose pin, and use as a port for monitor...bp 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0Flag - - - - - - - IRQEG8IRQEG7IRQEG6IRQEG5IRQEG4IRQEG3IRQEG2IRQEG1IRQEG0At reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Access R R R R R R R R/W R/W R/W R/W R/W R/W R/W R/W R/Wbp Flag Description Set condition15-9 - - -8 IRQEG8 IRQ8 both-edge detection enable/disable 0: Disabled1: Enabled7 IRQEG7 IRQ7 both-edge detection enable/disable 0: Disabled1: Enabled6 IRQEG6 IRQ6 both-edge detection enable/disable 0: Disabled1: Enabled5 IRQEG5 IRQ5 both-edge detection enable/disable 0: Disabled1: Enabled4 IRQEG4 IRQ4 both-edge detection enable/disable 0: Disabled1: Enabled3 IRQEG3 IRQ3 both-edge detection enable/disable 0: Disabled1: Enabled2 IRQEG2 IRQ2 both-edge detection enable/disable 0: Disabled1: Enabled1 IRQEG1 IRQ1 both-edge detection enable/disable 0: Disabled1: Enabled0 IRQEG0 IRQ0 both-edge detection enable/disable 0: Disabled1: EnabledExternal interrupt inputGeneral-purpose pinExternal interrupt pins(P80 to P83, P10 to P14)
