SDA5252 SIEMENS [Siemens Semiconductor Group], SDA5252 Datasheet - Page 70
SDA5252
Manufacturer Part Number
SDA5252
Description
TVTEXT 8-Bit Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.SDA5252.pdf
(143 pages)
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Semiconductor Group
Interrupt Priority Register IP0 and IP1
Interrupt Priority Register
Default after reset: 00
Interrupt Priority Register
Default after reset: 00
Corresponding bit-locations in both registers are used to set the interrupt priority level of
an interrupt.
Table 16
IP1.X
0
0
1
1
Table 17
Bit
IP1.0 / IP0.0
IP1.1 / IP0.1
IP1.2 / IP0.2
IP1.3 / IP0.3
IP1.4 / IP0.4
IP1.5 / IP0.5
IP1.6 / IP0.6
Setting/clearing a bit in the IP-registers establishes its associated interrupt request
priority level. If a low-priority level interrupt is being serviced, a higher-priority level
interrupt will interrupt it. However, an interrupt source cannot interrupt a service program
of the same or higher priority level.
(MSB)
(MSB)
–
–
IP0.6
IP1.6
IP0.X
0
1
0
1
Corresponding Interrupt
IE0
TF0
IE1
TF1
RI/TI
DVIRST/ DHIRST/ EVENST/ LIN24ST/AVIRST/AHIRST
IADC
H
H
IP0.5
IP1.5
Function
Set priority level 0 (lowest)
Set priority level 1
Set priority level 2
Set priority level 3 (highest)
IP0.4
IP1.4
IP0
IP1
70
IP0.3
IP1.3
IP0.2
IP1.2
SFR-Address AA
SFR-Address A9
IP0.1
IP1.1
SDA 525x
1998-04-08
(LSB)
(LSB)
IP0.0
IP1.0
H
H
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