2 external interrupt register descriptions, 6 .2 external interrupt register descriptions -10 – Maxim Integrated MAXQ622 User Manual
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MAXQ612/MAXQ622 User’s Guide
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6.2 External Interrupt Register Descriptions
Each bit in this register is set when a negative edge or a positive edge (depending on the ITn bit setting) is detected
on the corresponding interrupt pin . Once an external interrupt has been detected, the interrupt flag bit will remain
set until cleared by software or a reset . Setting any of these bits causes the corresponding interrupt to trigger if it is
enabled to do so .
Bit 7: External Interrupt 7 Edge Detect (IE7)
Bit 6: External Interrupt 6 Edge Detect (IE6)
Bit 5: External Interrupt 5 Edge Detect (IE5)
Bit 4: External Interrupt 4 Edge Detect (IE4)
Bit 3: External Interrupt 3 Edge Detect (IE3)
Bit 2: External Interrupt 2 Edge Detect (IE2)
Bit 1: External Interrupt 1 Edge Detect (IE1)
Bit 0: External Interrupt 0 Edge Detect (IE0)
Each bit in this register is set when a negative edge or a positive edge (depending on the ITn bit setting) is detected
on the corresponding interrupt pin . Once an external interrupt has been detected, the interrupt flag bit remains set until
cleared by software or a reset . Setting any of these bits causes the corresponding interrupt to trigger if it is enabled
to do so .
Bit 7: External Interrupt 15 Edge Detect (IE15)
Bit 6: External Interrupt 14 Edge Detect (IE14)
Bit 5: External Interrupt 13 Edge Detect (IE13)
Bit 4: External Interrupt 12 Edge Detect (IE12)
Bit 3: External Interrupt 11 Edge Detect (IE11)
Bit 2: External Interrupt 10 Edge Detect (IE10)
Bit 1: External Interrupt 9 Edge Detect (IE9)
Bit 0: External Interrupt 8 Edge Detect (IE8)
Register Name
EIF1
Register Description
External Interrupt Flag 1 Register
Register Address
M0[07h]
Bit #
7
6
5
4
3
2
1
0
Name
IE15
IE14
IE13
IE12
IE11
IE10
IE9
IE8
Reset
0
0
0
0
0
0
0
0
Access
rw
rw
rw
rw
rw
rw
rw
rw
Register Name
EIF0
Register Description
External Interrupt Flag 0 Register
Register Address
M0[06h]
Bit #
7
6
5
4
3
2
1
0
Name
IE7
IE6
IE5
IE4
IE3
IE2
IE1
IE0
Reset
0
0
0
0
0
0
0
0
Access
rw
rw
rw
rw
rw
rw
rw
rw