UPD75238 Datasheet, PDF (135/190 Pages) NEC – 4 BIT SINGLE-CHIP MICROCOMPUTER

INT0/P10
INT1/P11
Fig. 5-2 Configuration of INT0 and INT1
Noise
eliminator
Selector
Φ
fX
64
Input buffer
Edge detection
circuit
IM01, IM00
Φ
IM03
2
Edge detection
circuit
IM10
IM1
IM0
4
4
Internal bus
µPD75238
INT0
IRQ0 set
signal
INT1
IRQ1 set
signal
INT2/P12
Fig. 5-3 Configuration of INT2
Input buffer
Rising edge
detection
circuit
INT2
IRQ2 set
signal
Internal bus
135