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UPD17708 Scheda tecnica(PDF) 141 Page - NEC

Il numero della parte UPD17708
Spiegazioni elettronici  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Produttore elettronici  NEC [NEC]
Homepage  http://www.nec.com/
Logo NEC - NEC

UPD17708 Scheda tecnica(HTML) 141 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
Figure 12-19. Timing Charts When Interrupt Is Accepted (2/3)
(b) If interrupt is kept pending by the interrupt enable flag
(2) If two or more interrupts (e.g., INT0 pin and INT1 pin) are used
(a) Hardware priority
Instruction
EI
MOV
WR, #0010B
POKE
INTPM3, WR
Interrupt
cycle
INTE
INT0 pin
IRQ0 flag
IP0 flag
INT0 pin interrupt pending period
INT0 pin interrupt accepted
INT0 pin interrupt service
Instruction
EI
MOV
WR, #0110B
POKE
INTPM3, WR
Interrupt
cycle
INTE
INT0 pin
IRQ0 flag
INT1 pin
INT0 pin interrupt pending period
INT0 pin interrupt accepted
INT0 pin interrupt service
EI
Interrupt
cycle
IRQ1 flag
IP0 flag
IP1 flag
INT1 pin interrupt pending period
INT1 pin
interrupt service
INT1 pin interrupt accepted



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