NEC PD750008 User Manual
212
µPD750008 USER'S MANUAL
Figure 6-10. Block Diagram of the INT2 and KR0 to KR7 Circuits
INT2/P12
KR7/P73
KR6/P72
KR5/P71
KR4/P70
KR3/P63
KR2/P62
KR1/P61
KR0/P60
IM2
4
Input buffer
Internal bus
Selector
Rising edge
detection
circuit
Falling edge
detection
circuit
INT2
(IRQ2 set signal)
IM20, IM21