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| C508_01 Datasheet, PDF (207/267 Pages) Infineon Technologies AG – 8-Bit CMOS Microcontroller | |||
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C508
Interrupt System
The SFR IEN1 contains the enable bits for the external interrupts 2 to 6, and the A/D
Converter interrupt.
Special Function Register IEN1 (Address B8H)
Reset Value: X0000000B
Bit No.
B8H
MSB
BFH
BEH
â SWDT
BDH
EX6
BCH
EX5
BBH
EX4
BAH
EX3
B9H
EX2
LSB
B8H
EADC
IEN1
The shaded bits are not used for interrupt control.
Bit
EX6
EX5
EX4
EX3
EX2
EADC
Function
External interrupt 6/Timer 2 capture/compare interrupt 3 enable
If EX6 = 0, external interrupt 6 is disabled.
If EX6 = 1, external interrupt 6 is enabled.
External interrupt 5/Timer 2 capture/compare interrupt 2 enable
If EX5 = 0, external interrupt 5 is disabled.
If EX5 = 1, external interrupt 5 is enabled.
External interrupt 4/Timer 2 capture/compare interrupt 1 enable
If EX4 = 0, external interrupt 4 is disabled.
If EX4 = 1, external interrupt 4 is enabled.
External interrupt 3/Timer 2 capture/compare interrupt 0 enable
If EX3 = 0, external interrupt 3 is disabled.
If EX3 = 1, external interrupt 3 is enabled.
External interrupt 2 enable
If EX2 = 0, external interrupt 2 is disabled.
If EX2 = 1, external interrupt 2 is enabled.
A/D Converter interrupt enable
If EADC = 0, the A/D Converter interrupt is disabled.
If EADC = 1, the A/D Converter interrupt is enabled.
Userâs Manual
7-9
2001-05
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