26
µ
PD754202, 754202(A)
Figure 7-1. Interrupt Control Circuit Block Diagram
Internal bus
Interrupt enable flag (IE
×××
)
2
4
IM2
IM0
Note1
Edge
detector
INT0/P61
INTBT
INTT0
INTT1
INTT2
IRQBT
IRQ0
IRQT0
IRQT1
IRQT2
IRQ2
KR4/P70
KR7/P73
Falling edge
detector
Note 2
Key return reset circuit
IM2
IME
IPS
IST1
IST0
Decoder
VRQn
Priority control
circuit
Standby release
signal
Selector
Vector table
address
generator
Notes
1.
Noise eliminator (Standby release is disabled when noise eliminator is selected.)
2.
The INT2 pin is not available. Interrupt request flag (IRQ2) is set at the KRn pin falling edge when IM20 = 1 and IM21 = 0.
Содержание Mu754202
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