GMS90C31 datasheet(27/59 Pages) HYNIX

tên linh kiện	GMS90C31

Giải thích chi tiết về linh kiện	HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS

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GMS90 Series

Oct. 2000 Ver 3.1a

A low-priority interrupt can itself be interrupted by a high-priority interrupt, but not by another low priority in-

terrupt. A high-priority interrupt cannot be interrupted by any other interrupt source.

If two requests of different priority level are received simultaneously, the request of higher priority is serviced.

If requests of the same priority are received simultaneously, an internal polling sequence determines which re-

quest is serviced. Thus within each priority level there is a second priority structure determined by the polling

sequence as shown in Table 9.

Table 8. Interrupt Sources and their Corresponding Interrupt Vectors

Source (Request Flags)

Vectors

Vector Address

RESET

IE0

TF0

IE1

TF1

+ TI

TF2

+ EXF2

RESET

External interrupt 0

Timer 0 interrupt

External interrupt 1

Timer 1 interrupt

Serial port interrupt

Timer 2 interrupt

0000H

0003H

000BH

0013H

001BH

0023H

002BH

Table 9. Interrupt Priority-Within-Level

Interrupt Source

Priority

External Interrupt 0

Timer 0 Interrupt

External Interrupt 1

Timer 1 Interrupt

Serial Channel

Timer 2 Interrupt

IE0

TF0

IE1

TF1

RI + TI

TF2 + EXF2

High

↓

Low

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