GMS90 Hynix Semiconductor, GMS90 Datasheet - Page 27

• Manufacturer Part Number: GMS90
• Description: 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: Hynix Semiconductor

GMS90 Series
Table 8. Interrupt Sources and their Corresponding Interrupt Vectors
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 9. Interrupt Priority-Within-Level
Dec. 1998 Ver 3.0
RESET
IE0
TF0
IE1
TF1
RI
TF2
External Interrupt 0
Timer 0 Interrupt
External Interrupt 1
Timer 1 Interrupt
Serial Channel
Timer 2 Interrupt
Source (Request Flags)
TI
EXF2
Interrupt Source
IE0
TF0
IE1
TF1
RI + TI
TF2 + EXF2
RESET
External interrupt 0
Timer 0 interrupt
External interrupt 1
Timer 1 interrupt
Serial port interrupt
Timer 2 interrupt
Vectors
Priority
High
Low
0000H
0003H
000BH
0013H
001BH
0023H
002BH
Vector Address
23