SAB-C501G-1E24N SIEMENS [Siemens Semiconductor Group], SAB-C501G-1E24N Datasheet - Page 22

• Manufacturer Part Number: SAB-C501G-1E24N
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Interrupt System
The C501 provides 6 interrupt sources with two priority levels. Figure 9 gives a general overview of
the interrupt sources and illustrates the request and control flags.
Figure 9
Interrupt Request Sources
Semiconductor Group
P1.1/
T2EX
P3.2/
INT0
P3.3/
INT1
Timer 0 Overflow
Timer 1 Overflow
Timer 2 Overflow
TCON.0
TCON.2
USART
IT0
IT1
T2CON.3
EXEN2
T2CON.7
T2CON.6
TCON.0
SCON.0
SCON.1
EXF2
TF2
RI
TI
TCON.5
TCON.7
TCON.3
TCON.1
TF0
TF1
IE0
IE1
<
<
_
_
1
1
22
EX0
ET0
IE.3
ET2
IE.5
IE.4
IE.0
EX1
IE.1
ET1
IE.2
ES
IE.7
EA
PX0
PT0
IP.3
PT2
IP.5
IP.4
IP.0
PX1
IP.2
IP.1
PT1
PS
High Priority
Low Priority
MCS01783
1997-04-01
C501