UPD75518 NEC, UPD75518 Datasheet - Page 126
UPD75518
Manufacturer Part Number
UPD75518
Description
4 BIT SINGLE-CHIP MICROCOMPUTER
Manufacturer
NEC
Datasheet
1.UPD75518.pdf
(180 pages)
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KR0/P60
KR7/P73
IM2
INT4/
P00
INT0/
P10
INT1/
P11
INT2/
P12
2
Noise
elimi-
nator
IM1
2
Rising edge
detection
circuit
Falling edge
detection
circuit
Edge
detection
circuit
Edge
detection
circuit
INTCSI0
INTTPG
IM0
Both-edge
detection
circuit
INTT0
INTW
2
INT
BT
Selec-
tor
IRQCSI0
IRQTPG
IRQBT
IRQT0
IRQW
IRQ4
IRQ0
IRQ1
IRQ2
IM2
Fig. 5-1 Block Diagram of Interrupt Control Circuit
Interrupt enable flag (IE
Internal bus
)
VRQn
(IME)
Priority control circuit
4
IPS
Decoder
IST
2
Standby release signal
Vector table
address
generator
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