SAH-C515 SIEMENS [Siemens Semiconductor Group], SAH-C515 Datasheet - Page 119

• Manufacturer Part Number: SAH-C515
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Special Function Register IRCON (Address C0 H )
Bit
EXF2
TF2
IEX6
IEX5
IEX4
IEX3
IEX2
IADC
Semiconductor Group
Bit No.
C0 H
Function
Timer 2 external reload flag
EXF2 is set when a reload is caused by a falling edge on pin T2EX while EXEN2 =
1. If ET2 in IEN0 is set (timer 2 interrupt enabled), EXF2 = 1 will cause an interrupt.
EXF2 can be used as an additional external interrupt when the reload function is
not used. EXF2 must be cleared by software.
Timer 2 overflow flag
Set by a timer 2 overflow and must be cleared by software. If the timer 2 interrupt
is enabled, TF2 = 1 will cause an interrupt.
External interrupt 6 edge flag
Set by hardware when external interrupt edge was detected or when a compare
event occurred at pin P1.3/INT6/CC3. Cleared by hardware when processor
vectors to interrupt routine.
External interrupt 5 edge flag
Set by hardware when external interrupt edge was detected or when a compare
event occurred at pin P1.2/INT5/CC2. Cleared by hardware when processor
vectors to interrupt routine.
External interrupt 4 edge flag
Set by hardware when external interrupt edge was detected or when a compare
event occurred at pin P1.1/INT4/CC1. Cleared by hardware when processor
vectors to interrupt routine.
External interrupt 3 edge flag
Set by hardware when external interrupt edge was detected or when a compare
event occurred at pin P1.0/INT3/CC0. Cleared by hardware when processor
vectors to interrupt routine.
External interrupt 2 edge flag
Set by hardware when external interrupt edge was detected at pin P1.4/INT2.
Cleared by hardware when processor vectors to interrupt routine.
A/D converter interrupt request flag
Set by hardware at the end of an A/D conversion. Must be cleared by software.
EXF2
MSB
C7
H
TF2
C6
H
IEX6
C5
H
IEX5
C4
H
7-8
IEX4
C3
H
IEX3
C2
H
IEX2
C1
H
IADC
LSB
Interrupt System
C0
Reset Value : 00 H
H
IRCON
C515