Datasheet

DS_1215F_003 73S1215F Data Sheet
Rev. 1.4 39
Interrupt Priority 1 Register (IP1): 0xB9 Å 0x00
Table 30: The IP1 Register
MSB LSB
– – IP1.5 IP1.4 IP1.3 IP1.2 IP1.1 IP1.0
Table 31: Priority Levels
IP1.x IP0.x Priority Level
0 0 Level0 (lowest)
0 1 Level1
1 0 Level2
1 1 Level3 (highest)
Table 32: Interrupt Polling Sequence
External interrupt 0
Polling sequence
Serial channel 1 interrupt
Timer 0 interrupt
External interrupt 2
External interrupt 1
External interrupt 3
Timer 1 interrupt
Serial channel 0 interrupt
External interrupt 4
External interrupt 5
External interrupt 6
1.7.3.6 Interrupt Sources and Vectors
Table 33 shows the interrupts with their associated flags and vector addresses.
Table 33: Interrupt Vectors
Interrupt Request Flag Description Interrupt Vector Address
N/A Chip Reset 0x0000
IE0 External interrupt 0 0x0003
TF0 Timer 0 interrupt 0x000B
IE1 External interrupt 1 0x0013
TF1 Timer 1 interrupt 0x001B
RI0/TI0 Serial channel 0 interrupt 0x0023
RI1/TI1 Serial channel 1 interrupt 0x0083
IEX2 External interrupt 2 0x004B
IEX3 External interrupt 3 0x0053
IEX4 External interrupt 4 0x005B
IEX5 External interrupt 5 0x0063
IEX6 External interrupt 6 0x006B