Key Input Interrupt Function - Epson S1C63616 Technical Manual

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.
P10
Address
Interrupt polarity select
register (PCP00)
Address
Interrupt select
register (SIP00)
Address
Interrupt mask
register (EIK00)
Address
P11
P12
P13
Noise reject select
register (NRSP01, 00)
Address
P40
Address
Interrupt polarity select
register (PCP10)
Address
Interrupt select
register (SIP10)
Address
Interrupt mask
register (EIK10)
Address
P41
P42
P43
Noise reject select
register (NRSP11, 10)
Address
Noise
rejector
Noise
rejector
Fig. 4.5.7.1 Key input interrupt circuit configuration
MUX Interrupt factor
flag (IK00)
Address
MUX Interrupt factor
flag (IK10)
Address
SIC63616-(Rev. 1.0) NO. P49
Sleep
cancellation
Interrupt
request
Sleep
cancellation
Interrupt
request
3240-0412