SIC63616-(Rev. 1.0) NO. P49
3240-0412
4.5.7 Key input interrupt function
Eight bits of the I/O ports (P10–P13, P40–P43) provide the interrupt function. The conditions for generating
an interrupt can be set with software. Further, whether to mask the interrupt function can be selected with
software. Figure 4.5.7.1 shows the configuration of the key input interrupt circuit.
Data b
us
Address
Address
Address
Address
Interrupt polarity select
register (PCP00)
Noise
rejector
MUX
Interrupt select
register (SIP00)
Interrupt factor
flag (IK00)
Address
Interrupt mask
register (EIK00)
Address
Noise reject select
register (NRSP01, 00)
P10
P11
P12
P13
Sleep
cancellation
Interrupt
request
Address
Address
Address
Address
Interrupt polarity select
register (PCP10)
Noise
rejector
MUX
Interrupt select
register (SIP10)
Interrupt factor
flag (IK10)
Address
Interrupt mask
register (EIK10)
Address
Noise reject select
register (NRSP11, 10)
P40
P41
P42
P43
Sleep
cancellation
Interrupt
request
Fig. 4.5.7.1 Key input interrupt circuit configuration