C508_01 Datasheet, PDF (209/267 Pages) Infineon Technologies AG – 8-Bit CMOS Microcontroller

C508
Interrupt System
The SFR IEN3 contains the enable bits for the external interrupts 7 to 9.
Special Function Register IEN3 (Address BE_H)
Reset Value: XXX000XX_B
MSB
Bit No. 7
6
BE_H
–
–
LSB
5
4
3
2
1
0
– EX9 EX8 EX7 –
–
IEN3
Bit
Function
EX9
External interrupt 9 enable
If EX9 = 0, external interrupt 9 is disabled.
If EX9 = 1, external interrupt 9 is enabled.
EX8
External interrupt 8 enable
If EX8 = 0, external interrupt 8 is disabled.
If EX8 = 1, external interrupt 8 is enabled.
EX7
External interrupt 7 enable
If EX7 = 0, external interrupt 7 is disabled.
If EX7 = 1, external interrupt 7 is enabled.
User’s Manual
7-11
2001-05