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2.7 External Interrupt 2 (Wake Up)
2.7 External Interrupt 2 (Wake Up)
• Eight external interrupt input pins
• An interrupt request is output by Low-level input signals.
• Also usable as wake-up input
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Block Diagram
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Register List
This external interrupt 2 consists of external interrupt 2 control register (EIE2) and external
interrupt 2 flag register (EIF2).
EIE2
EIF2
43210
IF20
765
P00/INT20
Interrupt
IRQA
P01/INT21
P02/INT22
P03/INT23
P04/INT24
P05/INT25
P06/INT26
P07/INT27
Address: 0032H
Address: 0033H
EIE2
EIF2
8 bit
R/W External-interrupt control register 2
R/W External-interrupt flag register 2