Bits 3:2 – ISC1n: External Interrupt 1 Sense Control Bits [n = 1:0]
Refer to ISC3n bit description above.
Bits 1:0 – ISC0n: External Interrupt 0 Sense Control Bits [n = 1:0]
Refer to ISC3n bit description above.
Atmel ATmega64A [DATASHEET]
Atmel-8160E-ATmega64A_Datasheet_Complete-09/2015
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