C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 197
C509-L_97
Manufacturer Part Number
C509-L_97
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.C509-L_97.pdf
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7
The C509-L provides 19 interrupt sources with four priority levels. 12 interrupts can be generated by
the on-chip peripherals and 7 interrupts may be triggered externally.
The interrupt structure of the C509-L has been mainly adapted from the SAB 80C517A
microcontroller. Thus, each interrupt source has its dedicated interrupt vector and can be enabled/
disabled individually. There are also four priority levels available.
In the C509-L the 19 interrupt sources are combined to six groups of three or four interrupt sources.
Each interrupt group can be programmed to one of the four interrupt priority levels.
7.1
Figure 7-1 to 7-4 give a general overview of the interrupt sources and illustrate the request and
control flags described in the next sections.
Semiconductor Group
Interrupt System
Structure of the Interrupt System
7-1
Interrupt System
1997-10-01
C509-L
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