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MPC2F35L Datasheet(PDF) 8 Page - Megawin Technology Co., Ltd |
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MPC2F35L Datasheet(HTML) 8 Page - Megawin Technology Co., Ltd |
8 / 46 page 8 MPC2F35_USB Data Sheet MEGAWIN Interrupt Vectors Vector Address Item Priority Properties Description 8002H, 8003H RESET 1 External. Initial reset 8006H, 8007H USB 2 Internal USB interrupt 8008H, 8009H TM0 3 Internal Timer 0 overflow interrupt 800AH, 800BH P3 4 External. Port 3 interrupt vector 800CH, 800DH INT0 5 External. INT0 external interrupt vector 800EH, 800FH INT1 6 External. INT1 external interrupt vector There are six interrupt sources provided in MPC2F35. The flag IRQ_EN and IRQ_ST are used to control the interrupts. When flag IRQ_ST is set to ‘1’ by the hardware and the corresponding bits of flag IRQ_EN has been set by firmware, an interrupt is generated. When an interrupt occurs, all interrupts are inhibited until the CLI or STA IRQ_EN, #I instruction is invoked. Executing the SEI instruction can also disable the interrupts. Interrupt Process Logic IRQ_EN.1 Interrupt Vector Generator Logic Initial Reset STA IRQ_EN, #I Enable IRQ_ST.1 Initial Reset STA IRQ_CLR, #I SEI instruction Disable USB Interrupt signal IRQ_EN.2 S R Q S R Q IRQ_ST.2 IRQ_ST.5 IRQ_EN.5 S R Q . . . CLI instruction 8002H, 8003H 8006H, 8007H 8008H, 8009H 800AH, 800BH 800CH, 800DH 800EH, 800FH INT1 Trigger signal TM0 Interrupt signal |
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