C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 183
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C505_9708
Manufacturer Part Number
C505_9708
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.C505_9708.pdf
(227 pages)
- Current page: 183 of 227
- Download datasheet (2Mb)
7.1.3 Interrupt Priority Registers
The lower six bits of these two registers are used to define the interrupt priority level of the interrupt
groups as they are defined in table 7-1 in the next section.
Special Function Register IP0 (Address A9 H )
Special Function Register IP1 (Address B9 H )
Bit
IP1.x
IP0.x
–
Semiconductor Group
Bit No.
Bit No.
B9 H
A9 H
OWDS WDTS
MSB
–
7
7
The shaded bits are not used for interrupt control.
Function
Interrupt group priority level bits (x=0-5, see table 7-1)
Reserved bits for future use. Read by CPU returns undefined values.
IP1.x
0
0
1
1
–
6
6
IP1.5
IP0.5
IP0.x
0
1
0
1
5
5
IP1.4
IP0.4
4
4
Function
Interrupt group x is set to priority level 0 (lowest)
Interrupt group x is set to priority level 1
Interrupt group x is set to priority level 2
Interrupt group x is set to priority level 3 (highest)
7-12
IP1.3
IP0.3
3
3
IP1.2
IP0.2
2
2
IP1.1
IP0.1
1
1
Reset Value : XX000000 B
IP1.0
IP0.0
LSB
Interrupt System
0
0
Reset Value : 00 H
C505 / C505C
IP1
IP0
1997-08-01
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