73S1209F Data Sheet
DS_1209F_004
Interrupt Priority 1 Register (IP1): 0xB9
Å
0x00
Table 29: The IP1 Register
MSB LSB
–
– IP1.5 IP1.4 IP1.3 IP1.2 IP1.1 IP1.0
Table 30: Priority Levels
IP1.x IP0.x Priority
Level
0 0
Level0
(lowest)
0 1 Level1
1 0 Level2
1 1
Level3
(highest)
Table 31: 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 32 shows the interrupts with their associated flags and vector addresses.
Table 32: 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
38
Rev.
1.2