XC886/888CLM
Interrupt System
User’s Manual
5-2
V1.3, 2010-02
Interrupt System, V 1.0
Figure 5-1
Interrupt Request Sources (Part 1)
Highest
Lowest
Priority Level
Bit-addressable
Request flag is cleared by hardware
000B
H
ET0
IEN0.1
TF0
TCON.5
Timer 0
Overflow
001B
H
ET1
IEN0.3
TF1
TCON.7
Timer 1
Overflow
IP.1/
IPH.1
IP.3/
IPH.3
0023
H
ES
IEN0.4
IP.4/
IPH.4
>=1
RI
SCON.0
TI
SCON.1
UART
Transmit
0003
H
EX0
IEN0.0
IE0
TCON.1
IP.0/
IPH.0
0013
H
IP.2/
IPH.2
IT0
TCON.0
EX1
IEN0.2
IE1
TCON.3
IT1
TCON.2
IEN0.7
EA
P
o
l
l
i
n
g
S
e
q
u
e
n
c
e
UART
Receive
EXINT0
EXICON0.0/1
EINT0
EXINT1
EXICON0.2/3
EINT1
*