SAB80515 Datasheet, PDF (119/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

Interrupt System
Figure 8-6
Special Function Register IRCON (Address 0C0H)
0C7H 0C6H 0C5H 0C4H 0C3H
0C0H EXF2 TF2 IEX6 IEX5 IEX4
0C2H
IEX3
0C1H
IEX2
0C0H
IADC
IRCON
Bit
IADC
IEX2
IEX3
IEX4
IEX5
IEX6
TF2
EXF2
Function
A/D converter interrupt request flag. Set by hardware at the end of a conversion.
Must be cleared by software.
External interrupt 2 edge flag. Set by hardware when external interrupt edge was
detected or when a compare event occurred at pin 1.4/INT2/CC4. Cleared when
interrupt processed.
External interrupt 3 edge flag. Set by hardware when external interrupt edge was
detected or when a compare event occurred at pin 1.0/INT3/CC0. Cleared when
interrupt processed.
External interrupt 4 edge flag. Set by hardware when external interrupt edge was
detected or when a compare event occurred at pin 1.1/INT4/CC1. Cleared when
interrupt processed.
External interrupt 5 edge flag. Set by hardware when external interrupt edge was
detected or when a compare event occurred at pin 1.2/INT5/CC2. Cleared when
interrupt processed.
External interrupt 6 edge flag. Set by hardware when external interrupt edge was
detected or when a compare event occurred at pin 1.3/INT6/CC3. Cleared when
interrupt processed.
Timer 2 overflow flag. Set by timer 2 overflow. Must be cleared by software. If the
timer 2 interrupt is enabled, TF2 = 1 will cause an interrupt.
Timer 2 external reload flag. Set when a reload is caused by a negative transition
on pin T2EX while EXEN2 = 1. When the timer 2 interrupt is enabled, EXF2 = 1
will cause the CPU to vector the timer 2 interrupt routine. Can be used as an
additional external interrupt when the reload function is not used. EXF2 must be
cleared by software.
Semiconductor Group
119